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

[sickness14]

I didn't know your turbo wasn't dual scroll. Just getting a version of your turbo that is would net you a BIG gain in quicker spool time. Like 500rpm or better kinda gain. I've heard arguments made for better top end power too, but I can't vouch for that. BTW, IF you are looking at something monsterous like a GT40 or 42 or something in between, I HIGHLY recommend a Holset HX52, and I can get you one for under $200 shipped. Just FYI.

Keeping your turbo with an adapter plate certainly is the most economical way of doing it, just not the best performing. You can get the adapter plate now though (it'll probably beat the manifold here) as cheap as it is and when you get everything, you can mock it up and see if it's something you want to do or not. It would also give you an opportunity to chew on it with a die grinder and try to do your best to make it a smooth transition. Also, about split or not, it doesn't really matter since you turbo isn't dual scroll, but I'd get split, just in case for some reason down the road you get a dual scroll T3 turbo you want to put on, you don't have to order another adapter.

BTW, HX40's come in T4 flanges

HOLY CRAP CHRIS! $200? where do i sign. lol. can you tell me a little more about these turbo's you speak of? Ill get one instead of using my Precision. i can even make money on this deal if i sell my precision for more than what i buy the HX for! Whats the deal with the HX40 vs HX52? im going to do some reading... i want it! are they used? I think the HX40 would be a good match for what i want. Could you price one out for me and i might paypal you the moolah.

PS: hope you dont mind me posting this but i can see your manifold!!



I found a really good pic of an HX40 and a cool manifold for another RB on this thread:

http://www.driftworks.com/foru....html

REMAINING TO BE PURCHASED ACL Race Rod Bearing Set RB26DETT RB25 DET ORDEREDNissan RB25DET OEM Gasket KitNissan RB25 OEM Oil StrainerMachine Work on HeadTomei RB25 Metal Head Gasket ( 87mm T=1.5)Deatschwerks 800cc InjectorsNGK RB Spark Plug Set (RB25DET)ISIS Silicone Radiator Hose KitNissan OEM RB25DET Clutch Slave Cylinder

Dont mind the crappy cell phone pics. went by the shop today. they ordered the ACL rod bearings, should be here by end of next week.







TOMEI OIL RESTRICTORS
Modified by sickness14 at 10:06 AM 10/29/2009

[Cjmartz2k]

Yeah, the pic is cool. You can check out the Holset thread on here for a summary, but if you are seriously interested, calling you would probably be easiest. Shoot me you number via email and I'll give you a call this weekend sometime.

[sickness14]

Yeah, the pic is cool. You can check out the Holset thread on here for a summary, but if you are seriously interested, calling you would probably be easiest. Shoot me you number via email and I'll give you a call this weekend sometime.

Your cam gears and rail look sweet chris! shame its covered up. we need to get you a clear timing cover. haha.

[Cjmartz2k]

Thanks, but I like my 26 covers better

I'll call you in a couple hours. We'll be on the road heading up to hickory so I'll call you then. Maybe like 4'ish.

[ItzGenX]

Looks like they used a 'cookie'(abrasive disk) die grinder to clean the block deck. It can usually be pulled off with stock foil/paper gasket, but if you plan on using a metal head gasket, some leakage may occur.

[l0nestar]

I like this. Keep up the good work man! Is your car just waiting on the engine / turbo, relatively speaking? (I saw the short-list above)

Is it just me, or is the top of the block really rough? I'm used to having everything buffed / micro-polished to a mirrored finish.

Are you positive about the MLS head gasket? Just wondering.
Modified by l0nestar at 9:22 PM 10/24/2009

[sickness14]

I like this. Keep up the good work man! Is your car just waiting on the engine / turbo, relatively speaking? (I saw the short-list above)

Is it just me, or is the top of the block really rough? I'm used to having everything buffed / micro-polished to a mirrored finish.

Are you positive about the MLS head gasket? Just wondering.

Modified by l0nestar at 9:22 PM 10/24/2009

I'll have to ask the shop what they think about the finish on the deck surface. the car is waiting just for the motor to be put together, need to order the HX40 19cm turbo, another 40mm synapse wastegate, 800 cc injectors, head gasket, gasket kit. and a CLUTCH! clutch is going to kill my wallet. im still dreading it :/

the chasis is awaiting the installation of an S15 helical lsd, energy suspension diff bushings and the master bushing kit. then she will be ready to roll,

[sickness14]

ATTN: Cjmartz2k

hey chris, i just called goldfarb and talked to a woman in sales, shes going to call me back. she's looking up the inventory to see if they have an HX40 in stock. she asked about the exhaust blades, i told her 7 or 6 blade and also told her the turbo was 19cm (but im not sure where that is measured from). hopefully i will hear back from her soon!

here is the goldfarb site where the HX turbo's would be found for anyone else's references. they are bad a** turbos!

http://www.goldfarb-associates...tm#rb

now i have to find another synapse engineering synchronic 40mm wastegate. ugh.

im looking at this one, looks like its going to end up costing about $280 for the wastegate.

http://cgi.ebay.com/ebaymotors...61004

and the list gets longer...

REMAINING TO BE PURCHASED Nissan RB25DET OEM Gasket KitNissan RB25 OEM Oil StrainerMachine Work on HeadTomei RB25 Metal Head Gasket ( 87mm T=1.5)Holset HX40 19cm turbo Another synapse 40mm wastegate Deatschwerks 800cc InjectorsNGK RB Spark Plug Set (RB25DET)ISIS Silicone Radiator Hose KitNissan OEM RB25DET Clutch Slave CylinderCLUTCH!!!Install S15 Differential & energy susp. Bushing Kit
Modified by sickness14 at 6:47 AM 10/26/2009

[Cjmartz2k]

The exhaust wheels are either going to have 10 or 12 blades. It's the compressor wheel that comes in 6,7, and 8 blades. As long as she finds you one with a 19cm housing, it's all good though. We'll take care of the compressor side (finding the big one) later. They are easier to get than the 19cm ex housings. I might have to go hunting for that part number for you though. They wouldn't hunt for housing sizes before, just part numbers.

When you get her on the phone, please ask her if they have anymore HX52's with the part number that ends in 996 and if so, how much they want for them.

[sickness14]

The exhaust wheels are either going to have 10 or 12 blades. It's the compressor wheel that comes in 6,7, and 8 blades. As long as she finds you one with a 19cm housing, it's all good though. We'll take care of the compressor side (finding the big one) later. They are easier to get than the 19cm ex housings. I might have to go hunting for that part number for you though. They wouldn't hunt for housing sizes before, just part numbers.

When you get her on the phone, please ask her if they have anymore HX52's with the part number that ends in 996 and if so, how much they want for them.

No problem chris! Thanks for the help.

hope they can find the HX40 and HX52! i mean their name has RB in it! gold-fa'-RB. holsets are the gold for the RB

[sickness14]

chris, just talked to linda at goldfarb, they have one hx40 19cm non wastegated in stock but its been rebuilt, and they want $525 for it. they dont have any hx52's at the moment but she said they get shipments in daily so she wants me to check back with her periodically.

do you think that would be an option, to buy that one? Do i need a rebuilt one, for re-assurance purposes it seems promising. it would basically be a brand new turbo... im not sure though. i like the idea though. i can always email her and ask her to send me pics too.
Modified by sickness14 at 12:13 PM 10/26/2009

[l0nestar]

I may have to ask them about a HX35.. Looks good man!

[Cjmartz2k]

$525? That seems a bit steep, but it would be a brand new turbo. Remember what I said the best thing about holsets is though, the cheap price. It's just on the border of being to expensive IMHO. Your call. Keep in mind to make it the big bad a** HX40, your going to need to spend $100-$300 to get the bigger compressor and housing. Now you can do that down the road and break up the cost a bit. As is, that turbo will probably be capable of mid to high 400's rwhp at like 1.5-1.7 bar (just conservative guessing). With the bigger compressor, low to mid 500's. Spool would be about on par with a GT35r for either compressor.

If it were me, I'd wait for a used one and save a couple hundred bucks. Prices might be going up all over though, and it depends on how much of a hurry you are in. I think I paid $250 shipped for one HX40, and $150 for one with a lot of shaft play, but it had the bigger compressor which I was after so I didn't care. I just don't want you spending $800-$900 for everything all said and done and wish you would have gone with a GT35r or something like that for only $300-$500 more.

About the HX52, that's not a T4 flange either, it's something a little bigger. That's what everybody is running at Stec's shop now days though. You can get the flange off ebay for like $30. These are not small turbos though, like I mentioned. You are talking about a big mamajama drag turbo here. Like 700rwhp kind stuff. I plan on getting one eventually, (actually, I already have one, just not installed), but I also plan on getting an OS Giken cross mission for it, and I already have a GTR rear end and a tripple plate clutch.

O yeah, one other thing to keep mind, with just the HX40, I snapped a total of 4 axles shafts on drag radials. It'll make enough power where you are going to want to put a GTR/300zx rear end in, or keep a spare set of shafts in the garage and a wife willing to bring them to you

[sickness14]

I agree that the price is pretty steep, im not in a rush so ill wait a bit. i put my other turbo up for sale on the classifieds to see if i can move it.

I def. want to get the bigger housing to make over 500whp or it would be a waste bc i could just keep the turbo i have now and make almost 500. whats involved in finding the parts to upgrade the housing ect.? I also still have to buy another 40mm waste gate = $245 or so.

I still havent found a solution to my clutch dilemma. chris, is there any way to get a pull style clutch shipped over from japan cheap that would hold some power? like a twin disc or something? just curious. im excited to get my manifold!!

Also, chris i have an aluminum "driveshaft shop" driveshaft rated at 600hp. do you think that would give me some trouble in the 500whp range? the half axles are stock, and it will have an S15 helical lsd.

OH yeah and i found a vortech inline fuel pump (255lph+) for sale in the classifieds today for $40 bucks shipped! i want to get it so i can run twin walbro's in-line to keep the fuel adequate. what do you think?

[Cjmartz2k]

I'm sure the driveshaft will be fine. I was doing what I was doing on a hacked up stock two piece DS.

About the walbro's, twin pumps are what I ran, but remember, run then in parallel, not in series. For externals, that means two feed lines into two seperate pumps. You can Y them together after the pumps. One pump on a single line feeding another pump doesn't flow any more than a single one does. Might want to look into a surge tank style fuel set up if you have a little room in the trunk. It's probably what I'll wind up running.

About the clutch, sorry, no info for you on pull type stuff. I'd say do the conversion and I can help you find a push style twin or tripple plate. I'd do some searching on here or just email some of the big hp guys and ask what they are using. To bad the damn PM function is turned off. That is so stupid.

Do you have the compressor/exhaust wheel measurements for your current turbo?

[sickness14]

Ok great! I actually thought they went in series, so thanks for telling me. Ive got an in tank walbro right now, so how would i make that work? would i need three pumps? or would i take the one in tank, out and just run 2 lines in the tank as pickups into 2 pumps, and two lines up to the rail? I wanted to keep the stock rail for now , so im not sure how i would make it work. Is a 2nd pump even necessary at this time? will one 255 lph be sufficient for ~500 wheel?

Surge tank idea is bad a**! i would have to make one out of aluminum probably, something nice that would fit over the hump right behind the back seat in the S14.

As for the clutch, ok i think im going to surrender to the dark side and do the pull --> push conversion lol. I've seen a write-up a while back describing how to do it, i think some drilling and threading of a pivot ball is involved am i correct? i need to do some more research on this and see what parts are required, cost, ect.

zerothread?id=288581

a twin plate push style clutch would work great, but what kind of cost are we talking about? the only ones ive found are $2000+ so if we could find one for a reasonable price id be all over that. ricky @ rawbrokerage has several on his site for the RB having push conversion like the Exedy's and some ACT's.

http://shop.rawbrokerage.com/c...Id=17

Ricky suggested the carbonetic twin plate for $2740 but thats out of my budget for this build. im already a** backwards in this car as far as what i wanted to spend. its more like i could build three of these cars like i have with the amount of crap thats gone wrong!

I Did however search ebay and found very limited results on "rb26 clutch" and "rb25 clutch". the only one i found that appears to be a pull type for my trans is the following, but i dont know how much power it will hold! ugh. i like the price though! that might just have to work.

http://cgi.ebay.com/EXEDY-cera...a93a4

I found another one on Nengun for ~$1700 (Nismo Super Coppermix) that holds 670ps (not sure of the hp conversion) but its meant for the ER34 without conversion!

http://www.nengun.com/nismo/su...lutch

OH More good news!!! "As of 2009 ORC has changed all kits that require the Push to Pull converter kits. These clutches no longer require the converter as the clutch covers are setup as Pull. In turn the price has decreased!!"

check this one out... but its not meant for drag b/c its non-dampered (un-sprung)

http://www.rhdjapan.com/jdm-lo...57252

The only compressor / exhaust wheel measurements for this turbo that i have is that the exducer is 70mm (exhaust wheel) and that the inducer has a .60 a/r. its a precision SC44 but i dont know anything more about it. Its tiiny though

Thanks for your dedication in helping me chris! your the man, i owe you


Modified by sickness14 at 5:05 AM 10/28/2009

[Cjmartz2k]

No thanks needed man. I will bulls*** about cars until I'm blue in the face. Just ask my girlfriend.

I had twin in tank walbro's Y'd into a single line all inside the tank, but I don't think that's the best option. I'd get a stock pump or something (walbro that's already in there is fine), run that into a surge tank and run your twin externals feeding out of that. The fittings/tank will probably be as much as the pumps. I'm pretty sure you can buy a pre-made tank.

About the clutch, like I said, I've got no experience with the pull style ones and what ORC is saying, just want to get that out there. I know after the s***ty exchange rate, the rebuild for my ORC tripple (un-dampened) was like $1060 or something. The whole clutch new probably would have been less than $1400 I'd guess. I can give my boy back in Oki a call and see if he can price one. Exchange rate sucks right now, but I don't think you are talking $2700 or anything like that. Not that you need a tripple for 500rwhp and 2wd.

About the turbo, the compressor wheel was what I was really interested in. That exhaust wheel is pretty small though like you said. I'd be prepared for some more lag compared to thing, but not worlds worse. Did they say 500hp turbo or 500rwhp turbo? Manufactures are always a bit "optimistic" shall we say on there numbers, but I would say the HX40 will make a solid 500rwhp on a mustang dyno any day. If your current turbo can do that with way better spool, you might want to re-think the holset a bit

[Cjmartz2k]

Sorry, drunk flub, I have an OS Giken un-dampened tripple. First place I looked is here http://www.rhdjapan.com/jdm-lo...19301 and it's like $2000 which is way more than I thought, but I guess that's the garbage exchange rate.

*actually I think that's the over sized monster tripple. Mine's the "b" type I think.

How about this one http://www.rhdjapan.com/jdm-lo...11899

Actually, just look around that site. There's a butt load.

[l0nestar]

Chris drunk what?

[Cjmartz2k]

Yeah, I know, SO out of character for me, right?

[sickness14]

No thanks needed man. I will bulls*** about cars until I'm blue in the face. Just ask my girlfriend.

I had twin in tank walbro's Y'd into a single line all inside the tank, but I don't think that's the best option. I'd get a stock pump or something (walbro that's already in there is fine), run that into a surge tank and run your twin externals feeding out of that. The fittings/tank will probably be as much as the pumps. I'm pretty sure you can buy a pre-made tank.

About the clutch, like I said, I've got no experience with the pull style ones and what ORC is saying, just want to get that out there. I know after the s***ty exchange rate, the rebuild for my ORC tripple (un-dampened) was like $1060 or something. The whole clutch new probably would have been less than $1400 I'd guess. I can give my boy back in Oki a call and see if he can price one. Exchange rate sucks right now, but I don't think you are talking $2700 or anything like that. Not that you need a tripple for 500rwhp and 2wd.

About the turbo, the compressor wheel was what I was really interested in. That exhaust wheel is pretty small though like you said. I'd be prepared for some more lag compared to thing, but not worlds worse. Did they say 500hp turbo or 500rwhp turbo? Manufactures are always a bit "optimistic" shall we say on there numbers, but I would say the HX40 will make a solid 500rwhp on a mustang dyno any day. If your current turbo can do that with way better spool, you might want to re-think the holset a bit

The turbo is rated at 565 crank hp, so i might be able to get like 485 wheel out of it but it would have to be at like 25 psi or something , it spooled at like 3400 rpm at 7-9 psi before. Ive got my turbo listed for sale and so far one hit on it. if it doesnt sell before i get everything else done, ill just use it with an adapter and keep a single 40mm WG. I'll keep the single in tank walbro for now and then do something crazy later with the surge tank / twin pumps / -6 lines / fuel rail / fpr. ill just throw some 800cc injectors in for now. if you want to give your boy a call about the clutch sometime that would be awesome. the clutch disc in there now is a 6 puck sprung disc from Tennessee clutch & supply, custom made to work with the stock pressure plate (resurfaced) and stock flywheel (resurfaced). it is only rated to 450 ft lbs, which may be enough but i dont know how much power the stock pressure plate will hold. it will probably slip like hell even though the disc is good.

I just want do drive it so bad
Modified by sickness14 at 7:39 AM 10/29/2009

[sickness14]

hey chris i found this hx 35/40 hybrid 6 blade on ebay for 429... but it has the option to make offer. worth my time?

http://cgi.ebay.com/ebaymotors..._1066

ThanksJohn

[Cjmartz2k]

Yeah, that's a kick a** turbo. Bigger compressor'ed version of the one I used to run, but it's a T3, so you still run into the same problem that you have now. If you are just after that turbo for the bigger compressor, you're paying too much. I'd pass for the Stec manifold. Sorry. If somebody is looking for something on a T3 though, it's a good deal and a great turbo.

[sickness14]

k thanks. its up for grabs guys! someone buy it! lol

[Cjmartz2k]

One thing I just want to throw out there about that turbo just for research sake. The 6 or 7 blade compressor wheel will flow more than the HX35 exhaust wheel can flow when you start pushing it. You might run into compressor surge (the real thing) depending on application and boost if you do the hybrid with the 6/7 blade compressor wheel. When I did my HX35/40 hybrid, it was with the smaller 8 blade compressor wheel and it was awesome, but boost did fall off on the top end. I don't know if that was the turbine getting choked out or the compressor not being able to flow enough. Take all that for what it's worth.

[sickness14]

Hey guys what do you think about this deal on ebay? 850cc Siemens Deka Fuel injectors and knock offf Fuel Rail Kit for $600 shipped. i dont know how good the siemens injectors are though. it says it comes with conversion harness adapters but not sure if they have to be wired in or if they are plug and play.

any input?John

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

BTW found an awesome seller on ebay with lots of OEM nissan RB parts, hes got valve seats, valve guides, freeze plugs, i mean everything. even rb25 neo cylinder heads! check it out...

http://stores.shop.ebay.com/Er...mrsZ1


Modified by sickness14 at 5:56 AM 10/30/2009

[sickness14]

monday bump! .... JK i actually wanted to tell everyone that the rod bearings came in on friday, and hopefully will be installed today! whoo hoo.

that would make my day.

Oh and i managed to snap a few pics of a dodge ram 2500 cummins turbo diesel that came in to the shop today at work. i brushed off the stamped plate on the turbo to reveal the HX35 lettering! i was all excited i found something. lol. its no HX40 though. but this thing is still HUGE in person! i cant imagine what an HX40 will look like . i cant wait to find one. it better not be all rusty and crappy looking like this one though. this truck had like 120k miles on it



latahhz
Modified by sickness14 at 5:32 PM 11/2/2009

[sickness14]

manifold showed up. used spare head to mock up & see where it would end up sitting in the engine bay. looks like the turbo may end up hitting the valve cover though.... what do you think chris?

also a pic of my interior, got the CF panel cut for the oil press. gauge. not sure what im going to do with the radio yet. wont fit in the glove box, too deep.

the shop is too busy to get the rod bearings in this week, will be next week. the bottom end should be assembled by next weekend hopefully.

ordered engine gasket kit from ricky @ rawbrokerage last night. called today to talk to goldfarb about the HX40 turbo but they still dont have one that i want. only hx40 wastegated.. boo to that. the wait continues. enjoy

[Cjmartz2k]

Nah, it won't hit the valve cover, but it's close. Keep in mind I've got the larger RB26 VC's, and I can clear them (just). I got my turbo and a couple other things from the wonderful free shipping company that is the USAF though, so if you want to test it, you are more then welcome like I said. I've even got the flange and half a dump pipe (on the way still) so you can mock it all up when you get the block in.

Those ports look decent. Like I said, it's worth an afternoon with a die grinder to port match them, and I'd do the inside of the collector at the wastegate runners too and open them up as much as possible. I can't see from the pics, but there was a lot of extra metal on mine that I could chew on. Heavy SOB though compared to the OBX s***, eh?

O yeah, one thing I just remembered about the HX40's, somebody had one that was wastegated like Goldfarb has and they had to chew on the housing a bit with the grinder to make it clear the valve cover, so skip that one like we mentioned. Did they say what size compressor though?

[Cjmartz2k]

Hey, the oil feed at the front of the head. Is it supposed to be blanked off on Neo heads? Shouldn't there be a hole there? Machine work on the head looks good though. Nice cams BTW

That one stud is going to be a pain in the a**, I remember that. Best way is to do that one first and NOT put the manifold flush against the head at first, then do the rest.