When starts a GT3071 to spool with an .50 exhaust housing? on a std comp escort, not 7,2 cr.

so roughly rpm, 3000 rpm or later?

Won t such a turbo not be better than a T38 as it can be run with less boost for the same amount of power?

 

Sim, i would have said 3000rpm would be a good estimation.

but surely a .50 exhaust housing is getting far to small for that size of turbo, and correct me if im wrong but im sure that may suffer a bit of surge!!

whats wrong with a T38 tho?
- not being picky, more curious as to what your considering doing!?

 

hmm

i m thinking of several options.

maybe GT30, get my pistons pocketed and get some headwork for a good 450 horses with a new gearbox
and some air for more with this turbo

T38, pockets, headwork and cams for 430 - 450 hp

or

T34 hybrid stage 3 for ~400 without headwork

 

Could you run a GT30 on a standard engine and run lower boost to still acceive 350 - 400 bhp ?

 

Here in Australia the GT3071 and GT3076 turbo's are becoming very popular with 2 litre four cylinders. .82 housings seem to get the best response and overall power output. At 26psi on a GT3076 you will make 450-460hp very comfortably. You will get postive presssure somewhere between 2800-3000rpm and it will be all on by 3800rpm. My mates car runs a Gt3076 on a cossie and it is very impressive how it drives, its a animal.

 

Sorry I forgot, his car is mechanically standard, just running four coils and a good ignition amplifier.

 

450 / 460 with stock head and camps and inlet manifold?

seems hard.

but 3800 is too late for me.

I want at least 1 bar / 15 psi at latest 3500 rpm.

Think if I change I ll go for T38

 

I've just bolted a T38 on to my Escort, but it has had a lot of engine work done to it. (Low Comp, ported, BD14 cam etc)

Its going in for mapping on Feb 4th - so i'll let you know how I get on

 

Me escos has T3/4 (.57/.63HF) , 3800rpm 1.5bar . Custom exhaust manifold .