Garrett GT25R questions - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

undercoverdjay · 11-15-2004, 07:22 PM

I've been looking around for a concrete A/R size for this turbo. I have read on some previous posts about this being a great all around turbo and 350RWHP isnt out of the ball park for this turbo. Im looking to run this on my SR setup. Before I buy any fuel componets, I need to pick a turbo first. Ive heard good things about this turbo. I mean I want a weekend driver, quick spool up time, reliability, and I dont want to max it out just to get my desired result of 350RWHP and 11 second ET's Im already working out a shopping list to get all these pieces as to minimize downtime. I have already pulled the MAF of my TT Z32 before I sold it, a greddy intake, 720cc injectors(huge I know but for high boost potential I feel I'll need them), a Z32 fuel pump, FMIC, Apexi filter, And I'll probably have enjuku racing tune my ECU. As well as Apexi electronics. These are the HP and ET numbers Im shooting for. Can someone recommend a size for me? The link I found seems to be the best priced. Ive seen these range from 700-2,700. Although, it comes in two compressor sizes. Im 90% sure the .86 will be pretty laggy for street use. Although Ive been reading up on preboost nitrous systems to combat lag and provide quicker spool times. Someone throw their 2 cents in here. Its all appreciated. Sorry if I seem like a newbie, I have a good understanding of this, but haven't personally worked with numbers to make an educated decision. Thanks everyone!

Chris

Sorry the link to that 25r is here
http://optionimports.com/import-stor...ttgt2540r.html

**Edit** I was also looking into a top mount header. Only thing is, there are none for that flange size. There really is no need because it can clear at the bottom. I just thing a top mount looks great and really dresses up the underhood appearance of the engine. Equal length headers are pretty inviting as well. Someone set me straight on this please. Sorry for the long post.

PSI240SX · 11-16-2004, 07:01 AM

I had the .86 and full boost was at about 4700 @ 19psi. I made 387rwhp on pump gas. I had tubular manny, greddy intake manny, 264 cams, FMIC, full exhaust and 740cc injectors.

The smaller housing is maybe 5-700 rpms less laggy. Still not nearly as responsive as the t25. 387rwhp and my et was 12.5@ 117 on street tires so dont think 350 will get you 11's unless your a) using slicks, b) an accomplished drag racer, and c) in a very light chassis.

11-15-2004, 07:22 PM	#1
undercoverdjay Zilvia Junkie Join Date: Apr 2004 Location: Potsdam New York Age: 41 Posts: 594 Trader Rating: (2) Feedback Score: 2 reviews	Garrett GT25R questions I've been looking around for a concrete A/R size for this turbo. I have read on some previous posts about this being a great all around turbo and 350RWHP isnt out of the ball park for this turbo. Im looking to run this on my SR setup. Before I buy any fuel componets, I need to pick a turbo first. Ive heard good things about this turbo. I mean I want a weekend driver, quick spool up time, reliability, and I dont want to max it out just to get my desired result of 350RWHP and 11 second ET's Im already working out a shopping list to get all these pieces as to minimize downtime. I have already pulled the MAF of my TT Z32 before I sold it, a greddy intake, 720cc injectors(huge I know but for high boost potential I feel I'll need them), a Z32 fuel pump, FMIC, Apexi filter, And I'll probably have enjuku racing tune my ECU. As well as Apexi electronics. These are the HP and ET numbers Im shooting for. Can someone recommend a size for me? The link I found seems to be the best priced. Ive seen these range from 700-2,700. Although, it comes in two compressor sizes. Im 90% sure the .86 will be pretty laggy for street use. Although Ive been reading up on preboost nitrous systems to combat lag and provide quicker spool times. Someone throw their 2 cents in here. Its all appreciated. Sorry if I seem like a newbie, I have a good understanding of this, but haven't personally worked with numbers to make an educated decision. Thanks everyone! Chris Sorry the link to that 25r is here http://optionimports.com/import-stor...ttgt2540r.html Edit I was also looking into a top mount header. Only thing is, there are none for that flange size. There really is no need because it can clear at the bottom. I just thing a top mount looks great and really dresses up the underhood appearance of the engine. Equal length headers are pretty inviting as well. Someone set me straight on this please. Sorry for the long post. Last edited by undercoverdjay; 11-15-2004 at 07:54 PM..

11-16-2004, 07:01 AM	#2
PSI240SX Zilvia Addict Join Date: Jul 2001 Location: The Gunshine State Age: 50 Posts: 843 Trader Rating: (0) Feedback Score: 0 reviews	I had the .86 and full boost was at about 4700 @ 19psi. I made 387rwhp on pump gas. I had tubular manny, greddy intake manny, 264 cams, FMIC, full exhaust and 740cc injectors. The smaller housing is maybe 5-700 rpms less laggy. Still not nearly as responsive as the t25. 387rwhp and my et was 12.5@ 117 on street tires so dont think 350 will get you 11's unless your a) using slicks, b) an accomplished drag racer, and c) in a very light chassis. __________________ www.enjukuracing.com