PDA

View Full Version : Turbo size question???

tdub377
11-14-2007, 10:24 AM
Would this turbo go good on a RB25DET? I am running top-mount manifold, greddy intake manifold, power FC, front mount and 3" turbo back? I want something thats gonna come onto boost pretty quick.

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT37/GT3776_452159_1.htm

Thanks.
steve shadows
11-14-2007, 10:25 AM
the biggest possible turbo with the most lag
Z U L8R
11-14-2007, 10:39 AM
35r should be better than that ^,0

what's your magical number?

my 30/71r taps out at 22psi 440rwhp/380rwtq on 100octane, stock internal rb25 /w bolt ons, full boost at 3500-3800 depending on what gear i'm in and what rear end gear ratio.

i'm trying out this gt40 and i may try a pt67 next, but all in all i know a 35r will do [email protected] on 93 pump gas and [email protected] /w race gas on an rb25
tdub377
11-14-2007, 10:46 AM
I am only looking for like 400WHP and to come onto boost at like 3000 at latest!!!
Z U L8R
11-14-2007, 12:30 PM
:(

you'd be workin the hell out of a gt28/71r.....but i don't think you'd get 400rwhp out of it even with cams etc.

in all honesty the gt30/71r is probably the best turbo for what you wanna do. on 22psi i was making 350ft lb @ 3500 rpm
just my .02
Z U L8R
11-14-2007, 02:30 PM
combined with the 9:1 stock compression and vvt the 30r kicks in right on time. i never had to break boost when racing and full boost is always a downshift away with a much taller rear end gear than you have in your 240 so..... it won't be "laggy" to you at all
KA-T_240
11-14-2007, 10:52 PM
thats a bit to big, imo unless you want a full drag car.

find a turbo for 4000whp that well make full boost at 300 at the lastest is going to be pretty hard.
jspaeth
11-15-2007, 03:32 PM
thats a bit to big, imo unless you want a full drag car.

find a turbo for 4000whp that well make full boost at 300 at the lastest is going to be pretty hard.


Haha that would be awesome to have 4000whp by 300 RPMs
SHIFT_*grind*
11-15-2007, 03:47 PM
I am only looking for like 400WHP and to come onto boost at like 3000 at latest!!!

Gooooooooooooood luck on THAT one.
Koopa Troopa
11-16-2007, 05:55 AM
Would this turbo go good on a RB25DET? I am running top-mount manifold, greddy intake manifold, power FC, front mount and 3" turbo back? I want something thats gonna come onto boost pretty quick.

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT37/GT3776_452159_1.htm

Thanks.

Why do all turbo manufacturers' websites suck? I feel like I'm buying a turbo kit on Gran Turismo...

Anyways good luck. The bigger turbo you get the longer it'll take to spool. You want it to spool quicker? You'll need to go up in displacement.