hey boostwerks is finishing up my manifold, and i was wondering if any one is or knows of any one running a twin scroll bb gt37 on a ls/vtec, i have been looking at the one on full-races sight for a while now, also what a/r would you suggest?? motor will be a sleeved built ls/vtec. just kind of want an idea of what it will be like on the street. thanks

 

anyone??

 

I dont know anything about that specific turbo, but it would help us all out if you would give us a power goal that you're trying to meet. What do you want from this turbo?

 

i am shooting for 450-500 on a mustang dyno maybe more depending on traction

 

i may not be a pro. but with a gt37 is aiming for 550hp+

for me, it's an over kill for 450-500hp.

i know on an 2.5l subaru engine it spools 800rpm slower than gt35r (full boost around 5000 on a 2.5l)

 

yeah give us a hp goal your shooting for then we can start to reccomend turbos.

 

i have been told 500 hp on a mustang dyno is like 650 or 700 on a dynojet so the guy who will be tuning my car said that i can probably make about 500hp with 1200cc injectors on e85 with that turbo just trying to get an idea how laggy it will be i am still new to the twin scroll concept thanks for your help

 

GT3582 should work for your goals...that turbo will make well into the 550+ range on race gas. Have you considered other options like the Borg Warner S3xx series??

Do you have a divided manifold right now or is this still something you're putting together??

 

boostwerks just finished my ef divided mani with a t4 flange and dual 38mm wastegates

 

with a twin scroll manifold go as big as possible on the exhaust housing. we went from a .70 divided to 1.15 divided and lost no spool at all. the divided setup works wonders!!! it actually made peak boost sooner with the larger housing. this was with a journal bearing t67 (to4r) with a p trim turbine wheel. 27psi by 6200 37 by 6500.

 

When you say GT37 I assume you're talking about the 67mm, correct? What bore size?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alpha &raquo;</TD></TR><TR><TD CLASS="quote">When you say GT37 I assume you're talking about the 67mm, correct? What bore size?</TD></TR></TABLE>

I believe he's talking about full-race's T3-T67 dual ball bearing turbo, on their site they call it A.K.A. Gt37.

 

here is a link to the turbo i was referring to thanks for the advice so far hope this helps,
http://www.full-race.com/catal...37eb8

 

anybody??

 

Why dont you send Geoff a mail about this turbo.

Remember the spooltime will be affected on displacement, cams, header, intake even what gear your at....
so there will be no basic anwer.
The thing you can know is your goal vs what turbo you need.
What you need is a turbo that spools between gearshifts, so you dont "bog/fall out of the powerange" everytime you change gear



Modified by atec at 2:08 AM 11/21/2007

 

Between the GT37,GT66, and GT3567, We hadn't noticed much of a difference in positive manifold pressure reaching any more quickly than an equivalently T3/67 H.O.. But this was in a T3 frame, which is a bit different... Not too many T4/T67s, most guys go larger than that at that point.