Fix Thread turned into Re-build thread! (built rb25 neo)

[Shocker]

id go with the CP's over the weisco's and day...are the CP's that you took out not any good now?...stock bore perhaps?...if they are stock bore what do you want for them?

Both good pistons, but I'd have to disagree and stick with the Weisco's.

[l0nestar]

ok, so since i havent heard anything from anyone, im starting to think everyone forgot about me. oh well. I guess ill just figure it all out on my own! I'll be ordering the 87mm CP pistons from JGY tomorrow morning.

Order the Weisco's from Ricky.I don't trust _anything_ from JGY anymore. Plus Ricky is a SPONSOR (and a cool guy! )

[Cjmartz2k]

thanks. I think im going to have to go with the 6boost manifold. I would like to keep it top mount. which do you have?

I'm running that Stec SS tubular mani I was telling you about. You getting the 6boost in twin scroll?

[sickness14]

I'm running that Stec SS tubular mani I was telling you about. You getting the 6boost in twin scroll?

Oh ok. I just looked into that manifold too. Im surprised its working well for you. looks good but the fact that it "comes with a wastegate" kinda throws me off a little. its only 329 on sale from their website.

Order the Weisco's from Ricky.I don't trust _anything_ from JGY anymore. Plus Ricky is a SPONSOR (and a cool guy! )

Oh yeah i know ricky is cool as hell and he's helped me out a lot already. Ill order from him then. I just posted on his Rawbrokerage thread. im waiting for a response

Both good pistons, but I'd have to disagree and stick with the Weisco's.

Ive read about both and honestly, i hear more about the CP's being good

id go with the CP's over the weisco's and day...are the CP's that you took out not any good now?...stock bore perhaps?...if they are stock bore what do you want for them?

Thats what i'll do then! The ones im getting rid of are a .20 over bore and theyre all screwed up. valve marks in all of them from the original disaster with the head. the timing was way off and that first head basically went in the garbage after it cracked in 8 places.

[Cjmartz2k]

About the mani, I would reccomend it to any one of my friends from a not cracking standpoint. Fits awesome too on a RHD car. I don't know about LHD though. I'll be finding that out soon enough. Don't let the price fool you. It's a damn good mani. Much better than some name brand greddy or tomei POS. It's no 6boost or full race mani----it's basically a china rip off of a greddy design, but made with really good (321) and really thick (3mm) stainless steel.

How soon are you looking at getting back up and on the road? I'm going to be back in NC begining of Oct

[sickness14]

About the mani, I would reccomend it to any one of my friends from a not cracking standpoint. Fits awesome too on a RHD car. I don't know about LHD though. I'll be finding that out soon enough. Don't let the price fool you. It's a damn good mani. Much better than some name brand greddy or tomei POS. It's no 6boost or full race mani----it's basically a china rip off of a greddy design, but made with really good (321) and really thick (3mm) stainless steel.

How soon are you looking at getting back up and on the road? I'm going to be back in NC begining of Oct

Thanks for the input man, that may not be such a bad choice after all. Thats cool that you are coming back soon, it will be a whiiile before its running again. Probably not before x-mas. unless i can come up with like 5 grand cash. lol. Ill def. show you everything if you want to meet up sometime when you get back.

Im still waiting for ricky to get back to me. Ive got money in hand to order pistons (or should i say credit card... whatever. hah)

tty soon. I

[Coolwhip]

done

[sickness14]

done

Thanks ricky!

Also, guys: i need some help answering a few questions that i was asked by the machine shop / the shop thats building my motor. Im sure when my pistons show up, there will be some of this information on a spec sheet in the box but i figured id ask ahead of time. Thanks!! Its finally starting to look up again. Fingers crossed

-Piston to wall clearance-Ring gap-Main bearing oil clearance-Rod bearing oil clearance-Crankshaft end play-Main bearing torque specs-Con rod torque specs

[sickness14]

done

Hey ricky, do you have an ETA on the pistons? or a tracking #? thanks man!

anyone have any input on using one of these with the stock manifold?

Will it fit?



-John

[sickness14]

bump for some help?

[S14-NEO]

were you planning on running the stock turbo or and upgraded one...i cant imagine there being much room if you add that piece and a larger turbo as well...

[opticnerv]

I would also like to know if that adapter would work !!

[240z4u]

If your running a turbo of any real stature, that thing won't fit too well. I am considering selling my modified stock exhaust manifold that has been jet hot coated. It accepts a 38mm w/g. Email me if your interested.

Evan

[sickness14]

If your running a turbo of any real stature, that thing won't fit too well. I am considering selling my modified stock exhaust manifold that has been jet hot coated. It accepts a 38mm w/g. Email me if your interested.

Evan

Very interested. Im using a precision SC44, .63 trim turbo with an external 40mm synapse wastegate. Can you send me pictures of this manifold? Do you think it will clear if i clock the turbo? Thanks-John

[mott6904]

What thickness was the headgasket you were running? From the pics. it looks like your valves were kissing the piston around the valve release. Maybe it is just machine marks. That is caused from cam timing or the block and head being shaved to many times and the piston is coming up to much. When it was built orginally they could have used the wrong pistons since you went with rb26 crank and rods. You can fix the issue by running a thicker headgasket but i think the thicker you are running more of a risk of having headgasket sealing issues.

[meet07]

do you have a link to the stec mani that your using??

[sickness14]

What thickness was the headgasket you were running? From the pics. it looks like your valves were kissing the piston around the valve release. Maybe it is just machine marks. That is caused from cam timing or the block and head being shaved to many times and the piston is coming up to much. When it was built orginally they could have used the wrong pistons since you went with rb26 crank and rods. You can fix the issue by running a thicker headgasket but i think the thicker you are running more of a risk of having headgasket sealing issues.

The headgasket was a 87mm bore 1.1mm thick cometic gasket. Then i bought another Cosworth 1.1mm gasket. The head was shaved once, the block shaved once. Not sure how much was taken off when re-surfaced. The valves were kissing the pistons from the original head's timing belt being set 2 notches off on each cam. (previous owner) the orignal owner built it with rb26 R33 crank, rb26 rods, rb26 cp pistons 86.5mm. acl hardware, arp fasteners. not sure what thickness HG ill go with this time. Maybe a 1.3mm? who knows. I dont want to have too big of one. I want to get between 400-500 hp out of it with a quick spooling .63 trim turbo.

[sickness14]

WOW i though of something crazy last night. WHAT IF... the original owner, build this RB25 with an RB26 crank, and used the RB25 harmonic balancer... would that throw off the TDC markings for the timing to be set up correctly? and maybe thats how he set the timing wrong? just a thought but now im having trouble deciding whether to buy a new harmonic balancer for an RB26 to be safe.



i need help

[l0nestar]

interesting idea. Maybe someone else can chime in as to the differences between 25 & 26 balancers.

I know Ricky carries the Full Metal Jacket balancers, and they received the Carl H stamp of approval...

[240z4u]

I think I am going to keep my manifold and stick an HX35 on it. Realistically Ill lose my a** on it if I sell. The jet hot coating was 330 all by itself.

[sickness14]

I think I am going to keep my manifold and stick an HX35 on it. Realistically Ill lose my a** on it if I sell. The jet hot coating was 330 all by itself.

no prob man, i dont blame you. id would be a decent setup! im jealous of your HX35 though... lol

interesting idea. Maybe someone else can chime in as to the differences between 25 & 26 balancers.

I know Ricky carries the Full Metal Jacket balancers, and they received the Carl H stamp of approval...

also, i talked to ricky today. there is no difference is the rb26 and rb26 timing marks on the metal jacket balancers. the one i would need would either be and rb20 or rb25 ross metal jacket balancer, depending on if my power steering pump pulley has 4 or 3 rib belt setup. I think ill end up getting the RB25 ross balancer along with a bunch of other top secret stuff lol. just kidding. im making a list. checking it not twice but a bunch of times.

[sickness14]

[Cjmartz2k]

I just jizzed in my pants a little

[l0nestar]

I just jizzed in my pants a little

x2!

[sickness14]

x2!

haha thanks guys

[mott6904]

are you have the machine shop assemble your engine or just the block. I wouldnt decide what thickness headgasket to use until the bottom end is back together so you can check piston to deck height. That will help you determine if you need a thicker headgasket. What pistons did you end up going with? We use alot of J@E pistons at the motorcycle shop i work at and lately they have been producing a bunch of junk.

[sickness14]

are you have the machine shop assemble your engine or just the block. I wouldnt decide what thickness headgasket to use until the bottom end is back together so you can check piston to deck height. That will help you determine if you need a thicker headgasket. What pistons did you end up going with? We use alot of J@E pistons at the motorcycle shop i work at and lately they have been producing a bunch of junk.

I will have the machine shop do just the honing and surfacing of the block, and balancing of crank. the shop Piedmont custom motorsports of raleigh will be assembling the engine, and checking piston-to-deck height for me to order the correct gasket.

I ended up going with the CP 87mm's.

Im still stuck trying to decide what i want to do about turbo manifold setup. modified stock mani vs 6boost... so much money being spent on this car Do you guys think its necessary to get cam gears when using 260 pon cams and a 26 bottom end on a ross balancer? hmm. not trying to buy things that arent necessary.

heres the list so far of what im looking at. please help if possible

Bearings / Gaskets / Oil Lubrication ACL Race Main Bearing Set 7M2428H/X Nissan RB26DETT (checking availability) Raw Brokerage $100.00ACL Race Rod Bearing Set 6B2960H/X RB26DETT RB25 DET (checking availability) Raw Brokerage $85.00Nissan RB25DET OEM Gasket Kit oem_RB25gasketkit Raw Brokerage $206.00Nissan RB25 OEM Oil Strainer nissan_rbstrainer Raw Brokerage $27.50Tomei RB25 Metal Head Gasket ( 87mm T=1.5) tomei_rb25hg Raw Brokerage $330.00Ross Metal Jacket RB25DET Harmonic Balancer 306201 Raw Brokerage $546.00 Clutch / Drivetrain Stainless Clutch Line for Nissan 240sx ss_clutchline Raw Brokerage $35.00FujiiSPL RB20/25 Power Steering Hose fujii_psline Raw Brokerage $75.00Nissan OEM RB25DET Clutch Slave Cylinder nissan_rb25slave Raw Brokerage $59.00 Fuel & Ignition System Deatschwerks 800cc Injectors - Nissan Skyline RB25DET NEO [DE-RBneo-800-6] Raw Brokerage $585.00Greddy RB25DET Top Feed Fuel Rail (Injector Size: 11.0mm) gdy_ecr33rail Raw Brokerage $280.00AEM Universal Fuel Pressure Regulator (Blue) aem_25-302 Raw Brokerage $193.73NGK RB Spark Plug Set (RB25DET) ngk_6es Raw Brokerage $24.88 Turbo / Exhaust 6Boost Top Mount Turbo Manifold Raw Brokerage $1,250.00Modify downpipe / Charge pipe Peidmont Custom Motorsports Raw Brokerage ISIS Silicone Radiator Hose Kit – RB25DET IS-RH-RB25 Raw Brokerage $49.99 TOTAL PARTS $3,847.10 Optional / Future Upgrades Carbonetic Twin Plate Carbon Clutch - RB Push Type, Pressure Plate Type: Street (11) ACN23210 Raw Brokerage $2,470.00Tomei Oil Pan Baffle Plate TM193034 Raw Brokerage $236.00Greddy RB Adjustable Cam Gear (Intake) GDY_RBCAMGEAR Raw Brokerage $145.50Greddy RB Adjustable Cam Gear (Exhaust) GDY_RBCAMGEAR Raw Brokerage $145.50

-John a.k.a. Neo "the one" with the broken RB lol.

So i have to ask, realistically, what do you guys believe this car will make power wise? with a stroked / bored bottom end, tomei 260 cams, 800cc injectors, .63 trim precision t3/t4 rated for 565 max. ?

[240z4u]

If you don't mind me interjecting, you may consider a different turbo. I have a garrett t3/t04e 60 trim with .63 exhaust housing. I have had problems with compressor surge since day one and this turbo is coming off within a couple weeks.

Yes that turbo will fit the stock exhaust manifold with two flanges used as spacers.

Take a good look at the compressor map and make sure your not going to be running off to the left of the surge line, and if you decide that is the way to go (and you don't have a turbo yet) mine is in great shape and will be f/s shortly.

Evan

[sickness14]

If you don't mind me interjecting, you may consider a different turbo. I have a garrett t3/t04e 60 trim with .63 exhaust housing. I have had problems with compressor surge since day one and this turbo is coming off within a couple weeks.

Yes that turbo will fit the stock exhaust manifold with two flanges used as spacers.

Take a good look at the compressor map and make sure your not going to be running off to the left of the surge line, and if you decide that is the way to go (and you don't have a turbo yet) mine is in great shape and will be f/s shortly.

Evan

I already have the turbo, but i will eventually upgrade to like a GT42 or something.

CJMARTZ2K: chris, i think ill go with the S-TEC manifold like you said. i see you are running the S-TEC 50mm wastegate. I was thinking about doing this but i already have a nice Synapse 40mm. Do you think its worth getting a bigger one? Will the 40mm work if i put a smaller flange on the manifold? the manifold comes with a 50mm flange. They have a special package deal for the manifold and wastegate for like $5xx something. i dont know if i trust a knockoff wastegate though...

[240z4u]

I already have the turbo, but i will eventually upgrade to like a GT42 or something.

I am not sure I was clear, pull up the compressor maps for your car and plot your motor before you even install it. I would have never even installed this turbo if I knew then what I know now. Its not an "upgrade later" situation, its more of a "I can't tune my car correctly because of compressor surge" situation.