skyline turbo questions?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bram StRoker · 02-13-2008, 11:53 PM

Does anyone know the specs on a stock R34 skyline turbo? i know its a t28 ball bearing and says .48 as opposed to .60 s15 turbo. and it has to be bolted to a top mount manifold. ive heard of people running between 21-25 psi with no problems whereas the s15 isnt recommended to go over 15. but does anyone know the actual max recommended boost? is anyone running them on an sr20? how much hp can u expect? interested in mounting it i also have an s15 turbo is it worth it to switch

LongGrain · 02-14-2008, 12:08 AM

are you talking about the RB25 turbo, or an RB26.

*fliprayzin240sx* · 02-14-2008, 12:16 AM

Quote:

Originally Posted by bram StRoker

Does anyone know the specs on a stock R34 skyline turbo? i know its a t28 ball bearing and says .48 as opposed to .60 s15 turbo. and it has to be bolted to a top mount manifold. ive heard of people running between 21-25 psi with no problems whereas the s15 isnt recommended to go over 15. but does anyone know the actual max recommended boost? is anyone running them on an sr20? how much hp can u expect? interested in mounting it i also have an s15 turbo is it worth it to switch

I think you got the 2 mixed up...R34 GTR turbos dont like going over 1 bar. Ceramic fins have a tedency to explode after 1 bar...stay with the S15 turbo and boost to 1.2.

bram StRoker · 02-14-2008, 08:03 AM

i probably will stay with the s15 turbo but how can u tell if its ceramic? looking at both turbos off the car they look identical except one says a/r.60 and a/r.48

slidingsky · 02-14-2008, 08:28 AM

It doesn't have to bolted to a top mount manifold but I seriously doubt someone is running 21-25 psi on those turbos.

bram StRoker · 02-14-2008, 01:15 PM

How do you get it to bolt up to a bottom mount manifold? I tried a megan, hks, and the stock manifold. None of them fit. The compressor side runs into the runners. do you need a spacer(kinda like a flange adapter)? if not how do you re clock it because if u rotate the compressor housing there is no where to bolt the actuator

slidingsky · 02-14-2008, 02:20 PM

Try using an SR20 Wastegate actuator I'm pretty sure that is the solution once you clock it. I'm not familiar with R34 stuff but if it is the same as the 33's then that is money.

bram StRoker · 02-15-2008, 06:21 AM

sweet i try that. thx

((sr)) kelly · 02-15-2008, 06:26 AM

just invest in a better turbo...my car made 290 whp at 12 psi with the 2871r .86 most s15 bb dont even make that at 18

just go ahead and get a 2871r .64 atleast

bram StRoker · 02-15-2008, 07:01 AM

Quote:

Originally Posted by ((sr)) kelly

just invest in a better turbo...my car made 290 whp at 12 psi with the 2871r .86 most s15 bb dont even make that at 18

just go ahead and get a 2871r .64 atleast

i would but im saving up for a gt35r. i just needed a turbo to tune my aem ems on for the meanwhile because my bitch ass t25 blew up on me.btw what engine management are u on

hijack3d · 02-15-2008, 04:32 PM

RB turbos are specific to RB only... you'll need to fabricate to make it work, and it's def. not worth the effort.

((sr)) kelly · 02-15-2008, 04:34 PM

yeh man.. just grab a s14 t28 then....

and im using a PFC

bram StRoker · 02-15-2008, 05:52 PM

Ya no problem.. Its a shame tho because the turbo r34 only only has 6k miles on it where as my s15bb has like 65-70k. As for fabricaton what would be needed to make it work because a buddy of mine is interested in buying it? is it just a spacer so the runner doesnt hit the turbo and a different compressor out flange because i already made one out of an old greddy bov flange and a 90 degree bend pipe? any info will be helpful.

02-13-2008, 11:53 PM	#1
bram StRoker Join Date: Dec 2007 Location: orlando fl Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	skyline turbo questions?? Does anyone know the specs on a stock R34 skyline turbo? i know its a t28 ball bearing and says .48 as opposed to .60 s15 turbo. and it has to be bolted to a top mount manifold. ive heard of people running between 21-25 psi with no problems whereas the s15 isnt recommended to go over 15. but does anyone know the actual max recommended boost? is anyone running them on an sr20? how much hp can u expect? interested in mounting it i also have an s15 turbo is it worth it to switch

02-15-2008, 04:32 PM	#11
hijack3d Zilvia Junkie Join Date: Sep 2007 Location: Olympia, WA Age: 39 Posts: 351 Trader Rating: (1) Feedback Score: 1 reviews	RB turbos are specific to RB only... you'll need to fabricate to make it work, and it's def. not worth the effort. __________________ Don't worry, it's legit: Review (Thanks Mike)

02-14-2008, 12:08 AM	#2
LongGrain Post Whore! Join Date: Sep 2006 Location: Midwest Posts: 2,741 Trader Rating: (5) Feedback Score: 5 reviews	are you talking about the RB25 turbo, or an RB26.

02-14-2008, 08:03 AM	#4
bram StRoker Join Date: Dec 2007 Location: orlando fl Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	i probably will stay with the s15 turbo but how can u tell if its ceramic? looking at both turbos off the car they look identical except one says a/r.60 and a/r.48

02-14-2008, 08:28 AM	#5
slidingsky Zilvia Junkie Join Date: Jan 2007 Location: Georgia Age: 42 Posts: 409 Trader Rating: (3) Rides Gallery: slidingsky Feedback Score: 3 reviews	It doesn't have to bolted to a top mount manifold but I seriously doubt someone is running 21-25 psi on those turbos.

02-14-2008, 01:15 PM	#6
bram StRoker Join Date: Dec 2007 Location: orlando fl Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	How do you get it to bolt up to a bottom mount manifold? I tried a megan, hks, and the stock manifold. None of them fit. The compressor side runs into the runners. do you need a spacer(kinda like a flange adapter)? if not how do you re clock it because if u rotate the compressor housing there is no where to bolt the actuator

02-14-2008, 02:20 PM	#7
slidingsky Zilvia Junkie Join Date: Jan 2007 Location: Georgia Age: 42 Posts: 409 Trader Rating: (3) Rides Gallery: slidingsky Feedback Score: 3 reviews	Try using an SR20 Wastegate actuator I'm pretty sure that is the solution once you clock it. I'm not familiar with R34 stuff but if it is the same as the 33's then that is money.

02-15-2008, 06:21 AM	#8
bram StRoker Join Date: Dec 2007 Location: orlando fl Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	sweet i try that. thx

02-15-2008, 06:26 AM	#9
((sr)) kelly BANNED Join Date: Jun 2007 Location: Zebulon... NC Posts: 1,035 Trader Rating: (6) Feedback Score: 6 reviews	just invest in a better turbo...my car made 290 whp at 12 psi with the 2871r .86 most s15 bb dont even make that at 18 just go ahead and get a 2871r .64 atleast

02-15-2008, 04:34 PM	#12
((sr)) kelly BANNED Join Date: Jun 2007 Location: Zebulon... NC Posts: 1,035 Trader Rating: (6) Feedback Score: 6 reviews	yeh man.. just grab a s14 t28 then.... and im using a PFC

02-15-2008, 05:52 PM	#13
bram StRoker Join Date: Dec 2007 Location: orlando fl Age: 39 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	Ya no problem.. Its a shame tho because the turbo r34 only only has 6k miles on it where as my s15bb has like 65-70k. As for fabricaton what would be needed to make it work because a buddy of mine is interested in buying it? is it just a spacer so the runner doesnt hit the turbo and a different compressor out flange because i already made one out of an old greddy bov flange and a 90 degree bend pipe? any info will be helpful.