I am currently in the market for a new turbo currently running on the greddy 18g kit. I want a turbo that would be able to make about 300whp around 10psi of boost. Motor will be a stock jdm b18c. Manifold will be a Full Race A/c ramhorn, and car will be tune on hondata s300. 440cc injectors.

This is what i want out of the turbo.
-Quick spool around 3-4k rpm that will hold out til redline.
-capable of 300whp on a stock block with room to grow if i decide to built the motor later on.

been doing some searching seems like gt28rs or gt30r is the way to go, but would like all the inputs from you guys.

thanks in advance!

 

What's your price range?

 

would like to keep it under 1000.

 

The gt28rs and the 30r are both over $1k. Your best bet would probably be a non ball bearing turbo (60 trim t3/t4, for example). You can find them for under $600 and you can definately make 300+whp.

 

how would the spool be on one of those turbos

 

oooo. A GT3255B or GT3000 would do nicely for that.

https://honda-tech.com/forums/forced-induction-16/stc-gt3255b-sls-shorty-stock-block-gsr-going-dyno-2052996/

 

Just get a t3/to4e 57trim with the .48 exhaust from cheapturbo.com for like $650 and call it a day.

 

In either case, whichever, the best is the .63A/R for the B18C with that compression. .48A/R will create a bit more backpressure than is desired for that setup. Many tend to focus on the "A/R" of the turbine housing without paying attention to the actual exhaust wheel that is used.

 

i ran/run a turbonetics t3/66 man stock gsr made 494whp

 

Maybe he doesnt want 494whp, I would of thought the thread title would of gave a hint to that....... and if t3/66 means a T66 then he probably doesnt want a turbo thats as laggy as that as well.

 

I would say maybe a gt2876, gt3071 or even a basic garrett 57trim with a 63 ex. they will be some good choices.

 

laggy lol for real you guessing right????????

i suggested a turbo that didnt cost me alot, and has room for imporvement for power in the future.

if you just wanna **** with me pm me ok.

 

^^^I am not messing with you

I would have to suggest a 60-1 or an SC61 before something in the 66mm (550-650hp) range, hell even a .60 trim can get you 450whp sometimes more.

 

sc34..

 

used GT3076r, it is capable of more power than you want but you'll reach your goal with 10psi, it spools fast enough to be fun but not so fast that your in boost when your driving normal and it comes on hard when you floor it, best street turbo IMO, the smaller stuff like the GT28RS just don't come on as hard as i like.

 

Blinx9900. I spoke him about something similar to the GT3076R in a 360 Journal package called the GT3000. for similar results as a GT30R and 30% less in cost (while still using T3/T4 flanging and fittings) it can't be beat.

 

I'm paraphrasing of course

I loved my GT3255b.



Here's my dyno at 10.5psi on a bone stock GSR. It was an amazing street turbo...the current owner is pushing it further than i ever did...he's somewhere in the 420whp range with sick torque and perfectly streetable spool.

 

my sheet with the t66

 

Now i'm wondering why the .63 a/r is what you suggest for the street? I would think the .48 a/r would come on faster and would be a better suit for the street.

Also you had mentioned people forgetting about the turbine wheel, but isn't the standard wheel in the 50,57,60 trims all stg3? and in that case i would still default back to the .48 a/r for the street.

 

fast spool on the street to me means no traction i like coming around people in 3rd gear myself where the tires only break lose at 90mph lol, and if you have a good management system you can set it up how you want it to come on anyways

 

K, coming from the guy running a T66 on a log manifold....

 

50 trim will get you there, 57 trim easy and good to 430ish, 60 trim same but good to lil over 450

personally id go with the 57 trim 63 exh

 

are you a sponsor here? because it seems every post about someone wanting a turbo you chime in and say contact you etc etc....

 

Re: which turbo for 300whp on stock gsr?
Quote:
Originally Posted by sanman000719
fast spool on the street to me means no traction i like coming around people in 3rd gear myself where the tires only break lose at 90mph lol, and if you have a good management system you can set it up how you want it to come on anyways

K, coming from the guy running a T66 on a log manifold....

care to explain ???????????

 

Nah to the .48. I have had so many different turbo combinations on my car including both a .48 and .63A/R with both .50 and .57-trim 04Es. The .48 will NOTICABLY choke the top end. You will actually feel the power fall off on the top end. It sucks lol.