Nissan Forums / Infiniti Forums - NICOclub: RB20 / RB25 / RB26 Forum

Fuel pressure too high when engine is running

s13_240_rb20 — 2009-11-22T05:06:25-08:00

I have an adjustable FPR on my RB20. I set the fuel pressure when the engine is not running to 37psi. Yet when I crank up the engine, the fuel pressure jumps up to 65 psi and sometimes even higher.

With the vacuum line attached the fuel pressure rises with throttle as expected. With it disconnected, the fuel pressure remains steady during throttle. I just got my alternator working and it charges at 15v when the engine is running...is that too high and does it affect fuel pump performance??

Is there supposed to be such a drastic difference in fuel pressure when the engine is running and not running?? or is this normal? I don't recall this drastic difference when the engine was in my 240sx.

--TJ

No Spark ! or maybe relay stopped working PLEASE HELP!

iloverbpowers — 2009-11-22T06:25:02-08:00

Hey guys im stumped for answers
and require help please

this is the first time ive posted on this website and first time ive ever done an engine swap so go easy on me =p
anyways heres the problem i have

i have a 1989 Nissan Cefiro A31
RB20e done 160,000 kms
now the transmission died so i figured i might aswell freshen it up abit

please understand that i am not after a turbo 20 det or 25 det or what ever at the moment as i am going to univercity.

so i know how this works you grill me on having a motor thats gutless etc etc..anywho

im just after help =) please =)

I replaced the RB20E with an RB20E out of a 1998 Skyline r 33
that has done 70,000 kms

Heres where the fun started.
I used the old a31 loom
now everything fit with a few adjustments

i double checked that everything had fit into right places eg: which wires to which.
i had to cut a few wires and use the r33 loom plugs as the old ones didnt fit.

When i tried to start the car
after double checking everything
The Engine turned over but had no Spark

the Coil if measured with a multimeter from the end which the loom plugs into coil with + and - has

0.15 - 0.17 volts this does not change if i am turning the engine or not
as far as i understand this should be 12 volts?

i also did the Spark test on a spare sparkplug still no spark after turning engine over

Please note however everything worked fine before the engine swap.

Now today when we tried to start it up again we noticed the fuel pump was not starting up upon turning on the ignition

why would this be? if everything plugged back in?

i had my dad check the fuses found a 20a and 15 a blown we replaced those but still the fuel pump wont start up and no spark

ive heard of relays? if someone would be kind enough to explain where those are please?
the pump is getting 11 volts 7 volts and 0.01 onto the two grounds? when you crank it over it goes up to 0.03?

PLEASE HELP!! i really want this thing going!

what size straight pipe should i run on my rb26 s13

rbs13det — 2009-11-22T06:20:39-08:00

i wanted to run a 3.5 or a 4 inch but alot of ppl tell me im an idiot for going so big .. i thought u didnt really need back pressure on a big turbo

RB25 questions/concerns

domokouki — 2009-11-22T06:36:37-08:00

Hey to the RB community here at Nico, always look forward to browsing through this forums pages to see the s-chassis engine bays looking sexier with an RB under the hood. Hopefully I will be able to post my new car in here, assuming I can find the RB that doesn't completely kill the bank. I have been on the lookout for an RB engine since I found the shell that will hopefully be converted into my new daily/fun weekend car. I really like the ease of the RB20 swap, as far as much easier and less consuming for money, but have always been attracted to the RB25, it's just always been a hope to end up with one under the hood, and seeing as how my new shell needs a new engine, might as well take the plunge now.

I have located a RB25 series 2 long block online which seems to be in better condition than most of the engines I have found under a grand, and at the 500 dollar price tag, I really don't want to let it go because that cuts down costs of the swap substantially.

The cons: The engine needs a rebuild, this I was figuring would be slightly necessary on any engine I located for the price, and since I won't need it in the car for a while, it's good timing to take care of any problems it may have. The engine has been tested and when it was pulled cylinder 6's compression was off, running at 30 psi. Turbo has a small amount of shaft play at the motor pull, but was apparently working fine at the boost levels.

I am trying to research everything I can on the RB25 as of lately, and even more of late looking into the series 2 engine trying to become as familiar as I can with known issues so that I could take care of any problems, and this will be my first complete rebuild and motor swap, so I am trying to be as prepared as possible. I am curious as to what everyone thinks as far as the time/money that I will have to put into the engine as of right now to have the long block rebuilt and ready to be prepped for installation. I don't want to plan for one schedule, to only find out that both funds and time become slimmer.

I already know of the need for the basic installation from reading the swap faq and various posts, but would like to hear a bit more from you guys who have done the swap.

Feel free to flame or tell me to search, I am currently trying to learn as much as I can, and would just like to know about this engine in particular as soon as possible to know what to look for, check for, ask about, be concerned with to deem it worth getting or not.

Sorry for the wall of text.

Need Help removing Pulley on RB25...

johnny butt — 2009-11-21T03:35:23-08:00

Hey guys, I am currently in the proccess of doing all of this:

http://forums.nicoclub.com/zer...wpics

Really nice and straight forward guide, only problem is me and 4 other mechanics are having issues removing the pulley seen here:

(taken from the guide:)

Any tips or suggestions? I can't change out my stuff until it's off.

rb20 aftermarket fuel rail

rwp096 — 2009-11-20T17:28:10-08:00

who makes a fuel rail for the rb20 besides egay china crap

Track application RB20 vs RB25

droptopsf98 — 2009-11-21T15:18:42-08:00

Hello gang, I need some friendly advice on what to do in this situation.

I have an S13 coupe race car I'm building (streetable track car). Car will be primarily serving as a track car, so that takes priority. I have an RB25 motor/trans lined up. I have a friend with an RB20 trans/mounting setup for sale.

End goal, I do not see this car crossing 350whp. In the short term, I plan to leave the RB25 stock for this year.

I know the RB20 trans is lighter, but isn't as strong.

So here's how I see it, correct me if I'm wrong.

RB20 Pro's:
lighter
use stock driveshaft

RB20 Cons:
uses cable drive speed sensor
won't hold as much power

RB25 Pros:
Stronger
Speed sensor plugs in

RB25 Cons:
Heavier
Have to use custom driveshaft

My RB25 setup has the trans coming with it, however a friend of mine has an RB20 trans, and mckinney mounts (which I need to buy anyways, so just trying to buy the right set)

I was pondering just buying the RB20 trans, using a stock driveshaft, and just running that until it dies.

Just looking for some feedback. We want to save whatever weight we can, but not at the expense of it dying in 3 weeks

Modified by droptopsf98 at 6:29 AM 11/21/2009

Get well soon Mark (S14-NEO)

Coolwhip — 2009-11-21T15:44:17-08:00

Hey everyone!

One of our RB brothers has been injuried in a car accident, Mark... aka S14-NEO.

Good friend of mine and many of yours; which has contributed greatly to this community of enthusiasts.

Please pray, wish, hope, thoughts whatever for a hastily recovery as he gets past this hurdle.

He is in good spirits and expects to be back rocking soon.

I know he would appreciate the support, thanks you guys!

And before you ask, he was not in his famous "firetruck red" S14 equipped with a R34 RB25DET NEO pumping out 600+whp.

Ebay Turbo Manifold

DrifterProdigy85 — 2009-11-21T08:22:28-08:00

I know everyones gonna say there crap quality but thats not what im gonna ask. What are the fitment issues with them on LHD cars? Please only post if you put one on your car and know exactly what fits tight or doesnt clear.

is rb26dett posible in z32

behzad512 — 2009-11-20T12:28:30-08:00

is it possible to do.. any1 know if any1 did it b4

Wanting to do a rb26dett on 300zx 94

behzad512 — 2009-11-20T15:36:34-08:00

i was wanting some help on doing a rb26dett swap on my 300zx.. i was wondering how hard it is.. is it hard finding parts later on.. what about engine mounts.. transmition.. can some1 explain it all ... it will help alot thanks...

rb26DETT problem high idle 1200rpm

auy_tong2 — 2009-11-20T05:09:41-08:00

hi guys, im already confused on my R33GTR, idle still stay at 1200rpm, already full adjusted the AAC valve, and tried removing the plug of the AAC, full adjusted the ECU, still now help.... anybody here can help, i checked the manual and it says to check the air regulator, im confused of the air regulator location, is it the air chamber? i already removed my plenum for gasket leaks, i havent seen wires attach on the air chamber..???? after i fixed my gasket leaks, my problem now is high idle...

Aftermarket rb20 Exhaust manifold

Supraclean — 2009-11-18T22:01:28-08:00

Hi guys/gals, new to the forum and wanted to say hi first of all. A little background info for ya before I ask some questions. Purchased my 92 skyline gtst type M about 6 months ago. Since then I have had a full on addiction for working and playing around with my summer sports car. So far the only thing I have not been able to do myself or find a way is wheel alignment/ mounting tires. Im builting up my Rb20 for now to be a summer cruizer/weekend drifter here and there.

I currently have my exhuast side all tore apart, unfortunalty one of my exhuast bolts snapped off, so I must fix that first. Basicly Im wondering where to look for a good quality aftermarket Rb20 "top mount" manifold that are not know to break after a couple years. I have checked out all the ebay ones and nothing really hits the spot. Im looking on puting a t3 garret 2876 externally wastegated turbo. I saw the old post for 6/boost group buy and noticed it was closed:(. You guys have any ideas on where I can look.

Price range - $500-800 Canadian I mean I know shipping will be extra but I really dont wanna spend $1500 on an Rb20 with just metal head gasket,Arp head studs and tomei proncams.

Let me know what you think I value your input.

Ignition System Worn Out

FinkenS14 — 2009-11-18T22:07:17-08:00

Hey guys when I first got my engine, it had Denso Iridiums gapped at .043. I got the car all running right, but it still had a horrible miss.

So me and my friends took the plugs out, regapped them to .030 and the car ran great and smooth.

This lasted about 4 months and then the car started missing again at the top of the gears.

So I went out and bought some NGK BCPR7ES's and gapped them at the stock .043 thinking the old plugs were bad.

It still had the miss at the top of the gears, except this time it was horrible.

So I regapped them to the .030 that had worked, and it still missed.

Still had the miss

Went back to the house, gapped them at a tiny .025, and the car runs like a top now, just burns a good amount of fuel when in boost.

Does it sound like my coils or ignitor are going out on me?

Thanks!

RB26 Cam Bracket Bolts

ralphsdiorama — 2009-11-19T12:01:17-08:00

This is probably a long shot but does anybody have any extra cam bracket bolts for an RB26. If not does anybody know where I could source some. Thanks guys.

Here is a picture of the two I need.

RB25 TO RB26 LONGBLOCK CAS

virus77 — 2009-11-18T14:56:28-08:00

I'm tossing around the idea of getting an RB26 block and head and swapping it into my current setup. I want to be able to use my nistune ecu, intake manifold, injectors, mafs, and wiring harness, etc....... so i have a few questions

I believe Raw brokerage sells an adapter plate for mounting ITB's on a 25 so I guess I could mount my 25 manifold on the 26 head (how much does this cost?). This would take care of the manifold, injectors and most of my wiring concern. Ill use my Z32 mafs instead of the 26 ones, maybe even a dummy z32 mafs for big horsepower options if I decide to go twins... movin on

Does the CAS on the 25 and 26 interchange...... if not do they read the same signal pretty much so I can wire a new plug into my harness and run a rb26 cas on my nistune ecu?

Am I missing any obvious issues which I may run into while doing this swap which I have overlooked like a douch-er

How to get around 500bhp from my rb26dett R34

c20let2k — 2009-11-18T12:09:54-08:00

My stock turbos have seen better days now and i'm gonna upgrade thows with new reinforced garrett's.

These are good for around 600bhp, and i want's to see about 500bhp from my rb26dett r34.

What injectors do i need? Is it low og high impedance?
Will i need a new fuelpump?

I have the basics as big exhaust, hks boost controller, hks airfilter mod and so on..

What more do i need?

These turbo's i'm going for:

http://www.phase2motortrend.com/garbsptuup.html

No Power to ECU RB25

OBTRICE — 2009-11-20T06:58:23-08:00

I plugged up my RB25 in my S14 (95) last night, but could not get power to the ECU.

I purchased the swap out of a running S14 so the harness was already completed. I pulled my SR out and dropped the RB in. Im using the 240 lower harness.

There is a plug on the top of the engine that is the exact shape and fit as the TPS that is not plugged in, but I cannot see that stopping ECU power. Plugs in the kick panel and grounds are all fit and set. Im pretty stumped.

Any help would be massive. Thanks.

extra fmic

95-240sxrb25swap — 2009-11-19T14:30:39-08:00

anyone have a fmic for an rb25 laying around they want to get rid of? let me know i need one asap. thanks, carfreak1989@buffalo.com

rb25 into the hardbody, have have found a way

jeremymr06 — 2009-11-20T03:45:51-08:00

ok iv been searching but there isnt alot of info on how to put a rb25 into a hardbody. so after doing some research i think i have found an almost bolt in friendly way.
what you you guys think??? possible:
Is there engine bay room
Do i need fire wall modification

the ka24e in the truck and the ka24e and ka24de use the same engine brackets.
so by using a 240sx rb swap kit designed to mount to stock subframe the motor should bolt in... http://cgi.ebay.com/ebaymotors...aed1a
or are those mounts to bolt to the frame and u use the stock rb25 engine brackets???

also the hardbody came with the vg30e, which uses the same tranny(different bellhousing) as the rb25, so if i buy the vg tranny crossmember it would be close to being bolt in, or very little modifications.
http://www.courtesyparts.com/h....html a diagram of the crossmember.

the tranny crossmember is part #11340m

the tranny mount is part number #11320
same as the 300zx tranny mount part number
http://www.courtesyparts.com/3....html

another question, is the rear of the 300zx tranny and the rb tranny have the same mounting points???
and what is the distance between the mounting points between the engine brackets and tranny mount for the vg/tranny combo and the ka/tranny combo.
ill go take measurements tomorrow and post them up.

let me know what you think

2 trany's destroyed in 3 days new record

ReganGTS25T — 2009-11-18T10:39:39-08:00

dyno'd 740 rwhp on my rb26 on pump and meth injection 29 psi....went to the track broke 2 trany's both 3rd gear.... 1 with redline oil 1 without

classsiccccc!

REDLINE

bryantkalagian — 2009-11-18T22:14:56-08:00

what is the redline on a rb25det series 2? mine has no rev limiter..when i was topping my car out, it just kept going past 7, which i thought was the redline?

RB25 owners quick question about head gasket!!

Starclassicbb — 2009-11-17T13:51:00-08:00

I Have a RB25 that I'm planning to put in my 240, I wanna put a metal head gasket before I put the motor in, does any one knows what are the torque specs? Has anyone done by your own n not have problem with the motor until now? Cause I would like a shop to do it but There non around MD that know bout this motors!! I rather I have someone to do it or tell me how to do it That had work on this motors before

Stock fpr on an RB25

bkos90 — 2009-11-17T05:08:01-08:00

What kind of FPR does a stock Rb25 come with?
Is it bolted on the fuel rail or is it external and is connected with hoses?

Thanks

Personal or Favorite RB videos

ralphsdiorama — 2009-11-19T21:41:27-08:00

I am half way there to getting my RB going and am in need of some inspirational videos. I figured we could have a thread dedicated to users favorite RB videos and videos of their own projects. Who wouldn't love spending a few minutes listening to the sweet sweet note of the RB. Lets see what you guys have

http://www.youtube.com/watch?v=utaaPbiyi2w

This video so far has to be my favorite video of that sweet RB note.

Timing belt shredded....But Rb survived......WTF

Beanstalk — 2009-11-16T18:25:51-08:00

Well the good news is my rb survived.... And nobody is sure how? I just got done doing a pull for video and clutched to shut down it died...?? So I started it back up and I heard some metal knocking and shut it down. I thought I toasted my clutch. Got out checked it out and nothing. So I was 50yds from my shop so I turned around in the road it died. I turned it over and I knew what had broke... pushed it back and tore it apart. power int belt had a 1/4in left. It got caught in my oil pump sleeve and broke my timing mark off. So Hans (HX3_nismo)let me borrow his to see if it was effed and it started right up???? I lucked out. A bolt fell out of the back plate behind the timing cover. I didnt mess with them so I didnt check them POWER INTERPRISE FOR LIFE

My hx35 dyno

240slidekat — 2009-11-21T22:29:54-08:00

Sup guys so i got my car back to the dyno with my new set up and here is a comparison between my old (t72) and my new (hx35) set up.

Blue line is HX35
Red line is T72

Notice my boost line on my hx35 thats because my limiter on my boost controller was too low and i forgot to change it. but look at the difference it makes, full boost by around 3800rpm my torque line is a whole lot better too. By the way this is a very very conservative tune.

I cant wait to get water/meth injection, this cali 91 oct is killing my power.

I was thinking about swapping coils. What coils do you guys run in RB motors

exodus5547097 — 2009-11-18T13:08:37-08:00

What coil pack do you guys run in RB motors?
Here are you options(p.s. please explain any reason:

1) Raw Brokerage's very own SS Performance ignition coil packs

2) Splitfire Direct Ignition System

3) Buick GNX Ignition coil

4) LSX Ignition coil

rb20 sandwich plate

nekoabandoned — 2009-11-15T22:45:54-08:00

hey a friend of mine is having uber problems with his rb20 over heating, i personally think its due to the large/cheap intercooler hes running. normally it over heats on the highway 65+ mph just cruising o.o
anyways im about to get this motor so im looking into cooling options, an oil cooler is a great first step so i was wondering..

would a 300zx sandwich plate work on a rb20? sense the oil filters are the same?
also does it have to be the tt or can it just be the na?
thanks

RB25DET Intake manifold

IslandBoy — 2009-11-21T04:30:28-08:00

If i am changing the manifold to the Greddy type, do i have to get a new gasket to bolt on to the engine head??
If there is a gasket, does anyone know the Part No. ??
I need to know if the Greddy type plenum also adapts with the step up idle solenoid?

Modified by IslandBoy at 3:35 PM 11/19/2009

What boost at stock turbos at RB26DETT

c20let2k — 2009-11-15T11:06:24-08:00

Hi, i'm new here, and from Norway, so my english is not perfekt

What's max boost for the stock turbo's at the RB26DETT GT-R?

What's the best and cheapest way to upgrade these, or get new?
One turbo has gone bad, was set to about 1,4bar of boost, think it was all to much but..

Where to find upgrade turbos that fit's at the standard manifoil, exhaust and so on?

Thanks!

Help CLutch wont work!!!

streeteg — 2009-11-15T18:00:22-08:00

Motor- RB25det

Trans- rb20det

Going from Original Clutch, PP and Flywheel to ACT HD pp and 6 puck clutch.

OK so after 2 days, 2 slaves, 2 masters, a new clutch, pressure plate and flywheel- my clutch does not work. The last thing I have to do is put in my spare trans but I wanted to post up before I did so. Heres the deal.

This weekend I replaced my clutch, due to the fact that my car because increasingly harder to get in gear when the clutch was depressed. I removed the slave cylinder and replaced it thinking that was probably the culprit, fully bleeding the system and it was not. Now the clutch was pretty much non existant. When the car was on and in neutral, depressing the clutch pedal did not allow the car to go into gear AT ALL. not even reverse.

So I figured ok---- its all original stuff-- its probably screwed up so lets order a new clutch. I put everything in-- and still the same problem. We even adjusted the rod on the clutch pedal for more throw.

Here are the kickers-

New Clutch, PP Flywheel

New Master Cylinder

New Slave Culinder

When you push the clutch, the slave pushed the fork the appropriate distance. The fork/Throwout bearing definately work they were tested before gpogm pm the car.

Now--- Even though we 100% checked everything I thought MAYBE we put the clutch disk on backwards.... Doubtful-- but at this point my only hope.. So I drop the trans again last night. (The 2nd time only took an hour compared to the 4 it took originally... +1 for experience) only to find out thats not the case...so back to square 1

So where I sit now-- the original trans is on the ground I have a spare trans. The clutch and PP are off. and I am waiting for someone with a tad more experience to mention something I may have missed so that I dont go through all the effort of getting the car back together to have the same issue again...

Can anyone help!!?????

Thanks in advance-

Eric

Clutch question: Rb20/25 vs RB26

Count Zero — 2009-11-18T08:11:38-08:00

Ok, question for those who might know:

I need to replace the clutch in my R32.

Looking up clutches, the ones for the RB26 are all twice as expensive as the ones for the 20/25.

But I know for a fact that people can take a 26 and put the 20/25 transmission on it without changing the clutch...

So what the hell is different?
Why won't a 20/25 clutch fit onto the 26? If the transmissions are interchangeable (the 26 tranny is what was used with a 20 motor for the R32 GT-4 model), then what's different on the flywheel/crank that they'd not be the same clutch?

RB20DET alternator wiring custom swap but can't remember how it wires up.

s13_240_rb20 — 2009-11-20T03:58:32-08:00

I am swapping this rb20 into a d21 and I have forgotten how it was wired in my 240. Can someone please spell it out for me? Or just tell me what "signal" each wire needs, like "12v switched" etc?? It cranks and runs and drives, but when I pull the POS+ battery post off it dies (and I have to jump it off cuz it doesn't charge) :*(

I am soooo close!! will post pics later.

I will list all of the wires below, please tell me whatever you know about any of them. I want to confirm the little I think I know.

Grey plug on alternator has:

Big solid white wire
small white/red wire

There is also the big black and smaller black wires. Please confirm which is ground and which is POS+ and the POS+ ties into the main POS+ battery terminal, right??

Thanks,

--TJ

rb20 Oem Crank Bearings

preston240sx — 2009-11-16T19:28:24-08:00

do these exist ? i've been looking for hours all i can find the acl bearings is there a US car that uses the same bearings ?

Knock detection (PFC / Nistune)

ST240 — 2009-11-13T22:44:19-08:00

After cruising around in my buddys MS3 with his fancy monitoring systems (damn you OBDII) i realized how handy it is to have some sort of visual knock detection.

I understand the power FC has a knock detection alert on it... But does Nistune? If not whats the best way to monitor knock?

Needing a Head

driftaddicted — 2009-11-18T05:46:56-08:00

I'm needing a head for a RB25.

swr80@yahoo.com

injector resistor rb20 HELP!!

slostice09 — 2009-11-15T12:39:13-08:00

my 91 rb20det s13swap was going perfect until i realized that the injector resister was dangling from my tranny... i dont know where on my wiring harnes i should install it. its a small silver box with a two wire plug coming out one being grey wire with silverbands the other being black with silver bands... what color wires do i connect them? keep in mind this is my first swap ever......

is this ECU going to work

colbol89 — 2009-11-13T15:35:41-08:00

http://www.enjukuracing.com/apexi-safc-p-7094.html

It's the Apex'i S-AFC Neo and I'm trying to get my car to just run properly for now and eventually looking at getting 300rwhp. Is this ECU, piggy back system I believe, going to be able to do everything I'll need it to do to safely manage 300rwhp but most importantly allow me to manage, monitor, and alter my A/F ratio as I am currently running ridiculously rich.

r32 front axle replacement

240cp — 2009-11-13T10:03:31-08:00

Well i was wondering if anyone could email me or whatever a exlpoded view of the front diff and oil pan. I need to replace the passenger side cv axle and before i just start unbolting stuff i would like to see what's inside. I looked through the manual i downloaded and cant seem to find any info on the front diff. Help would be greatly appreciated. Thanks

No RB20 Coilpacks...wtf is this thing

HIGHFIV5 — 2009-11-13T09:20:20-08:00

I bought an RB20 and it didnt have the coilpacks i noticed
so i phoned the guy up and we met up and he gave me this
wacky setup...no coilpacks still but an ignitor and some other thing.
Noobish question but wtf is this?
Anyone seen this before?

RB25 short shifter (ebay)

240slidekat — 2009-11-16T18:00:54-08:00

hey has anyone tried this shifter? it doesn't look that bad for 80 bucks shipped.

http://cgi.ebay.com/ebaymotors...ories

Max's RB Build

ralphsdiorama — 2009-11-16T14:55:18-08:00

I made some progress with my build today and figured I should finally get my thread started. First off, my names Max and I have an unhealthy obsession with 240s. I had a black chuki in high school that I swapped an sr20 into, the car that essentially gave me the 240 feva.

Last Winter I happened upon a great deal on a kouki and figured it was time to switch things up. mmmmm kouki.

Anyway, I was completely set on a rb25 for the heart of the project until fate gracefully dropped a rb26 into my hands. Short story was: guy had R33 rb26 in s13, had all accessories for swap, most of which work for the s14, great price, sold, in my garage, I cried a little
Here are the specs for my build so far.

Specs:
R33 Rb26dett
RB25 Transmission
Stock Bottom end
1.5mm oil restrictor
N1 oil pump
N1 water pump
oem HG
arp headstuds
Welded oil pan
Rebuilt head (mostly oem)
HKS gt2530s
Tomei dumps
and more

I got the oil pan, water pump, and oil pump done a few weeks ago. Today I finally got the head on and threw the turbos on. Although I had done an engine swap with the s13 I had never until this point messed with taking an engine apart. Its a love hate relationship with a lot more loving to come when the swap is done. Here are some pics I took of it tonight. Enjoy.

With progress I will post more pics.

Anyone running a garrett t3/t04 50 trim - .63 ar on a RB25

virus77 — 2009-11-19T13:54:18-08:00

I got a really good deal on new t3/t4 50 trim .63 a/r so I picked it up. I just wanted to see if anyone has any experience with this turbo on a RB25. I actually had this same turbo in my KA24det back in 2004 and it was an awesome turbo so I was thinking about slapping it on the RB-Z and seeing what its made of. My plans originally were to get a gt30r which I know would kick a** but I'm open to using the 50 trim if its not gonna suck on the RB since I got it for cheap.

The car is quick as it running a stock turbo at 1 bar, my goals are realistically 350whp daily - 400whp max for the occasional exotic car battle. In such a light chassis it should make for a fun car at the button and willow springs, my two local tracks which most of my enthusiastic driving is done. Currently the car is running a z32 mafs, nistune, 525cc injectors... all the supporting mods are there. Anyone running one of these turbos that can tell me how much power they made, spool times, anything?

Raw Brokerage Salutes Our Veterans!

Coolwhip — 2009-11-12T05:03:13-08:00

Raw Brokerage would like to thank all those who serve our country in the ranks of our armed forces. Although we (America) can't give back as much as the men and women fighting for our freedom give us, anything we could offer counts I guess...

Email me from your military email to receive a Veteran's Day discount coupon.

ricky@rawbrokerage.com

But most of all, I personally thank you, about 7 years ago, I was waiting to leave to Parris Island for USMC boot camp. Raw Brokerage would never of happened if it wasn't for someone taking my place.

Thank you!

Ricky

240sx RB20 hard start when cold

RML_s13 — 2009-11-10T21:01:39-08:00

hi.. im practically a new registred user.. but always be in the forum.. and now i decide register and share what i can with the forum..

right now im having some problems with my freshly swaped RB20 when cold its hard to start.. so i check the FSM and figure out the Air Regulator could be.. so i check the power input to the Air regulator when the inginition switch on.. and no power.. check ground and has continuity.. just the side where must be power dont..

so my question.. idk if the air regulator just need 12+ power for work... or some kind of signal from the ecu.. im trying to find some rb20 ecu pinout.. i found some.. but i dont really know where the power becomes to the Aire regulator... ill preciate any kind of help.. and thanks...

rb25 tranny mounting options and driveshaft

rwp096 — 2009-11-12T15:44:18-08:00

ok so i just bought an rb25 transmission to replace my dying rb20 trans. I have an rb20 in the car(s14) with an r32 cross memember. Will this move my shifter location at all? What will I need for the swap as far as tranny mounts and such? and who can tell me what type of driveshaft needs to be made for it to work and maybe recomend a company( i know mckinney makes one, but will it work with the 25 mated up to the 20?)

Modified by rwp096 at 8:54 PM 11/10/2009

please help asap 95 240 rb20 swap wiring dilema

1.8turboterror — 2009-11-10T17:32:38-08:00

Guys please answer this question to the best of your abilities. I have to only coneect the eccs relay ? to red to power. black white to ground, red black to what? and do they connect to the f3 chassis plug or directly to the ecu wiring harness for the Rb please help . I need to hear this start. All the other wiring i have followed from this write up please correct anything that is incorrect. I want to learn . http://www.rbforums.org/pdfs/rb20to95.pdf Please help with what relay i need to connect to solve this thing.

In need of a r32 rb20 CAS

legit240sx — 2009-11-10T13:43:08-08:00

I have no signal coming from my CAS, which is why im getting no neg trigger to my injectors. I am wondering if any one has oval pluged CAS for grabs.

Question about running a Ebay intake manifold and the q45 throttle body

bkos90 — 2009-11-12T10:08:59-08:00

I want to know if any of you guys are running the Greddy or ebay intake manifold and the 90mm Q45 throttle body on an Rb25det with out running lean. Im thinking if i do that then i will be running lean because there is just gonna be so much air going in.
I've been dyingto know if i can run that on a stock setup (stock surbo, stock ecu, stock injectors etc...)

What the hell does this plug into (lower harness)

GSDKinked — 2009-11-10T19:27:08-08:00

Alright, before you say anything yes I've searched and not for 10 min. For 2hrs trying to figure out what this is for. I had my lower harness on my S14 converted for my RB25DET swap. The lower harness was originally on my S13 SR20.

Either way here are the pics....

V Band flange on HX35

jrd450r — 2009-11-10T11:10:15-08:00

I am wondering what size vband you guys are using with an HX35, it seems to large to fit a 3in vband. Or how did you go about mounting a downpipe to the turbo? Thanks!

RB20 turbo help

240midohiofan — 2009-11-10T10:50:00-08:00

Hey all, i'd first like to say i have searched this problem and can't find any answers.

My turbo seems to be making a loud and continuing whining noise when i get on it. It first sounded like my tires were screeching, but after it doing it a few times it sounds like its coming from the turbo. It just started doing this yesterday. After parking it in my garage i revved it up and the noise came around 6k rpm and also i could see smoke coming from my exhaust in my mirror. So i was wondering what may be causing this or what i need to do to fix it? Is my turbo shot? etc etc.
Any help would be appreciated.

its a rb20 stock turbo in a 90 240sx.

Nick

ISIS RB25 Intake Manifold

havik420 — 2009-11-09T14:58:45-08:00

I going to be installing mine of Friday and everywhere i read said for the most part its a easy enough install my only question is what did people used for the piping

Thanks in advanced

What MAF will do 1000whp

Beanstalk — 2009-11-14T02:48:26-08:00

My tuner said it cant be done. I was told I had to go speed dens. (MAP) to make that kind of power. I know supras do it and are all skylines that make 1k map cars?

My monster fuel system... I hope

Beanstalk — 2009-11-11T08:28:19-08:00

I have twin walbro hp's and a kenne bell boost-a-pump. The specs say that it should flow 600+lph @ 60psi. If my calcs are correct I should have no prob flowing enough fuel for 850whp. Tell me if anyone has an oppinion on this? The carrol shelby super snake makes 725whp with stock twins. It all cost maybe 400ish. I just want to give it a shot.

New project S15

Fearsome_tea — 2009-11-10T04:44:44-08:00

I am back...hehe. Well after getting rid of my R33 last year I have recentyl picked up another car. I was a project started by another person here in Okinawa, now I picked it up and going to do something alittle deffer with it.
I will post more pics when i able to log into my photobucket acct

crank timing drive gear ftw

preston240sx — 2009-11-09T08:00:22-08:00

how in the world do you get this thing off ? i already kill a oil pump(was going to replace any way ) trying to get this off how do you get it off do i need to buy another puller or something ?

Maryland car clubs rb

amakadius — 2009-11-07T20:17:57-08:00

I was wondering if there were any maryland rb owners or rb groups or clubs in the dc virginia maryland areas that people know about. i am moving there within the next two weeks and wanted to make quick friends. thank you for your help.

RB20/s13 low oil pressure..

deciplez0r — 2009-11-08T15:16:53-08:00

So I get my gauges (def link II) all set up an installed, its an 89 240 w/rb20 as stated in the title.. and my oil pressure at idle is sitting at maybe 5-10 and with some gas gets up to around 40-45 .. I did some reading around, and found that i should be around 25-75 as a normal reading. I'm running 10w40.. obviously i checked the oil, reading just fine. I havent been able to identify an oil leak of any sort.. i'm not exactly sure whats going on... any help would be greatly appreciated... I find ALOT of my answers here, so I'm sure someone out there knows :D thanks again.

Rb20 into 95 240sx wiring under hood help please.

1.8turboterror — 2009-11-06T06:17:28-08:00

Whats up guys im doing a Rb20 swap on my friends 240sx it is a 1995 base model. I have already done all of the dash wiring following the wiring guide off of rbforums.org but as far as under the hood by the battery i need help please write some responses including wiring colors. Thank you to everyone that helps.

n60 maf

opticnerv — 2009-11-09T11:17:06-08:00

I know this topic has been brought up a few times, but I need a straight answer. Will a purple N60 maf work on an rb25 S2 ?

Any other mafs besides the j60 that will work ?

My Progress.

DETurbine — 2009-11-22T07:20:03-08:00

For anyone that was interested. Finally got my motor in the bay . Bolted up the Z32/RB25 hybrid transmission. Will keep everyone posted on the progress as it goes on.

Engine Assembled

sorry about the dust. Car has been sitting for years.

Z32 rear housing w/RB25 bell housing+McKinney Shifter linkage Kit.

Modified by DETurbine at 11:25 PM 11/5/2009

RB25DET + gt35 or gt30

eimarshall — 2009-11-06T15:07:51-08:00

i just bought my s14 thats running an rb25 and i'm thinking of dropping from the current GT35 with .82 a/r to a GT30 with either a .82 a/r or .63 a/r. i'm looking for a more usable powerband and more streetability. could i just go for a .63 a/r on the GT35? i'm really looking for spool but i'd like to keep it over 400whp. i've heard the the GT35 with the .63 a/r can work but can be prone to surge(right?) and is harder to tune for some reason.(?)

as far as i've reasearched the gt30 just flows about 10-15 lbs/min less and avoids surge. the gt35 has more flow and can be prone to surge with the smaller a/r's. the spool really depends on the turbine a/r but i wasn't sure if the two turbos spool differently with the same a/r.(?)

i know lots of questions in there but i guess i want to know which turbo spools earlier with the same a/r?

any advice for a RB newbie?

thanks.

PROJECT NEO ON ROIDS!!!

S14-NEO — 2009-11-10T15:01:29-08:00

yes, the time has come to get down to business on massaging the internals on my wonderful RB25 NEO. after nearly three years of giving it hell on the comepletly stock internals, the rod bolts have finally threw int he flag..she still runs, but makes a wee bit of noise at certain rpms.

so, i have finally decided to build a bolistic missile and here is my idea:

http://www.nengun.com/tomei/st...6-28l
yes thats right a mac-daddy stroker kit from TOMEI

let me also compliment that stroker kit with a set of TOMEI type B pon cams
along with TOMEI springs

and while im at it im going to get the lovefab manifold to compliment the new HKS T04Z turbo

found some nice SARD 1000CC top feed injectors too

everything else on the outside of the engine has already been addressed

i will also be adding a Aeromotive A1000 fuel pump complete with fuel pump controller along with a custom built surge tank that ive been sitting on for some time now.

i have no idea what my power goals are but im fairly certain it will be north of 700whp with little trouble which ill be more than happy with..hehe

feel free to comment on what you guys think

weird rb20 problem...can't figure it out

carcrzy920 — 2009-11-18T17:09:53-08:00

so ive been chaseing this problem for the last month or two searching my *** off on every forum out there. The problem is i am only running on two cylinders. from the radiator to the firewall it fire like this
#1fire #2no fire #3fire #4 no fire #5 no fire #6 no fire. i am getting spark for sure and all my injectors are clicking. i have done a compression check and all cylinders came between 140-150. none over or below that. no boost leaks, no codes. nothing. i had a fried ecu so i bought one off ebay and thats what i use now. but on my old freid ecu all the little electrobe things that fire the coils are fried but the first one and the last one. when i plug in the ecu it runs those two cylinders and thats it. the new one has no burnt spots or anything like that. if i pull out my dipstick and put it directly under my nose i think it smells very faintly of gas but its extremely hard to smell. still feels like oil and doesnt evaporate at all and looks nice and golden like it should no discoloration at all. if anyone has any ideas please help me because i really am starting to hate this car and almost want to sell it.

Come help me pick apart my problem

Yellow4g63 — 2009-11-05T17:59:25-08:00

Ok here is the problem, I can't seem to get my car to idle unless I pull the big vacuum line off that goes to the break booster. If I leave it on and try to start the car it just won't turn over. The air fuel ratio while it's cranking with no vacuum leak is like 10ish, with it off it's around 14ish and when it fires up it's at 16ish. So when I fire it up with the vacuum leak that car will ilde high but it will stay running until I seal up the leak then the airfuel ratio shoots to the 10's and the car stalls out. I tried to unplug the maf to get it to idle and it just won't do it. Checked the ecu for codes but none all is good. I thought maybe my injectors were dirty and they were a little from the report I got back after I had them cleaned and balanced. I'm running 824cc Sard injectors with a Nistune Ecu and Denso 280lph fuel pump. I also reprogrammed my nistune and tried it another Rb20 and that car fired up like normal. I'm at a very big loss because I have never seen this before.

Think this is can be fixed with a dremal

preston240sx — 2009-11-04T20:17:11-08:00

had a tiny screw get stuck in my head dont ask ... anyway think this damage can be fixed machine shop ?

also if anyone has a set of rb pistons lemme know thx

Gahhh issue with block surface

ralphsdiorama — 2009-11-04T15:31:26-08:00

I was cleaning the block surface today to get it ready for the metal headgasket I got and found this curve dent that looks like a hammer hit it. There is already a 1.5mm oil restrictor in it which makes me think the guy before may have struck the block with a hammer while driving it in. I'll post a pic up now. I'm guessing I can't use a metal headgasket now since it probably wont seal. Let me know what you guys think.

Heres the pic. I can easily feel it with my finger nail. f*** I feel like killing a small animal!!

Modified by ralphsdiorama at 6:04 PM 11/4/2009

Modified by ralphsdiorama at 6:04 PM 11/4/2009

Modified by ralphsdiorama at 6:05 PM 11/4/2009

JDM transmission rebuild kit

spolitte — 2009-11-16T18:54:27-08:00

Does anyone knowanything about RB20det transmission rebuild kits such as, does nissan Japan still make them? Who would I have to contact to get one (friend will deal with shipping etc.)? Parts #, cost?

I've read all the threads about rebuilding the transmission with the KA's, buying another RB20 transmission from an importer (most likely will be hit or miss), and some other ideas/options, but I was just trying to figure out the viability of just buying a JDM rebuild kit thru a frind in Japan, and having them ship it to me, and if rebuild kits even exists anymore for these transmissions.

If anyone has any info, please let me know