Have a Sapphire Cosworth 2wd that needs a new turbo.
Have ran a Garrett T34 a/r .63 stg.3 hybrid turbo with cutback blades etc. at 2,1 bar
30psi on it until recently.
But this broke e couple of weeks ago.
The turbo has been the limiter of the engine, and now i want a bigger turbo.

spec:
200block, new balanced crank, polished and weightbalanced conrods,
JE lowcomp pistons, highpressure oilpump, professionaly portet 2wd head,
full head job, solid lifters, specialmade cams (about the spec of BD16 cams. could post the spec if requested), adjustable Kent camvernies, greys (Bosch 403), plenumspacer,
MSD 6A ingitionmodule, Mallory coil, 400chip, Ford Motorsport plugleads, NGK sparkplugs,
RS500 intercooler, 3" Mongoose, Bailey turbodamper, 2wd manifold, 3 Bar MAP-sensor, KN filter, Grp. A headgasket, ARP-studs, Grp. A cambelt and tensioner, bigger fuelpump, Samcos, hd bearings, new waterpump etc etc.

And i am going for a bigger spec this winter.
New exhaust manifold, swedish style inlet, bigger injectors (650cc), remap and new bigger turbo.
But the question is, which turbo..
Have thought about a GT30 (71/76..), Turbonetics T4 of some kind, Garret T4 BB or something like that. No preference actually..

I haven't got the need for breaking 500hp, but 450+ with pretty good responce is what i want.
Any ideas? Whould highly apriciate any ideas, or tips about who i could ask..

Running 3,62 Quaife now, but changing to 3,91 this winter.

Kristian

 

Anyone?
Seems like it is a lot of people here with a lot of knowledge.
Must be somebody who could have an idea about what would work well?

Kristian

 

Hi mate i think the gt30 would be ideal for your spec and for what ya want, will give good spool up with not so much lag.
Maybe try posting this in the cossy area for more response.
Good luck. steve

 

you might get a better response in General Discussion

either a gt30 or roller bearing t4, personally i like the idea of the big bang of boost the t4 gives but GT is the newer turbo

is it just a road car?

a few people on here run a GT30, i know Porkie changed from a GT35 to a GT30 and he swears by the GT30 - maybe PM him?

i think Scooby Slayer off here is selling a brand new internally gated GT, but not sure of exact spec (selling cheap too ) maybe PM him too

 

Thanks for your answers
Yes, think a GT30 will work well too. But i have my eyes open.
Will move the thread to general discussion then