I am stumped as a GT42 is a 1000bhp turbo whatever exhaust housing used its just toooooo big for a YB and been recommended NOT to use it......instead to go for a T66 or T70 NON roller bearing..this is from a pro's mouth before you all start saying its bollocks They reckon it will spin up around 500rpm later than a T4 and be good for 700bhp...quite cheap to me aswell Anyone got any knowledge on these for a YB?

 

how about my t61

 

GT42 is NOT always a 1000bhp Turbo

There is 2 compressor options, the smaller of the 2 is rated at 850bhp max.

And when you say T66 or T70, that means as little as T4, theres varients with 100s of bhp difference between them...

 

At 2k not fooking likely!!!!!Plus it aint a 700bhp turbo I can get a T66 FOR £895

 

who said i want 2k for it

 

sorry i thought i saw 2k in your ad...PM a price and specs please..but i doubt it will be any good but you never know Ranj


Steve is that on a YB?????...Obviously the T66 T70 is speced for 700bhp if i want it.

 

 

Is what on a YB?

Aside from the ex housing options, GT42s have 2 compressor options which is what changes the ratings- a 850bhp version, and a 1000bhp version.

For T66s and T70s, well it depends how fancy and efficient they are for their size, i know of certain "T70"s that have been proven at 930bhp (no nitrous).

When it comes down to it, all these T66, T70, T76, etc etc are all "T4 series" based turbos (generally T4S or T4H) just with various wheels, housings, etc etc to make them into whatever.

Even HKS call one of their turbos the T4Z and thats rated to over 700 (Again, a Garrett T4 based turbo)

 

Cheers Steve ...I meant the GT42...an 850 and 1000bhp versions is that on a YB figures?...If it is 850bhp is still toooooooo big for an 8000rpm limit!Probably looking at a 6k boost up

 

Phil,

As you prob already found out, if you ask different people, you will tend to get different answers.........

Can Mark Shead not give you a definitive spec for the turbo required for the job that you want your engine to do??????

Otherwise it's looking like you've made no progress since the first of these posts over 2 months ago:

"GT35 or GT40 or 42???"

"Just ordered my rods and turbo delivered"

"GT35 on it's way!"

 

At this stage not even Mark can specify a turbo for 700bhp...GT35 was cancelled...(phone Universal Turbos Vince to confirm it was ordered and cancelled due to upping the specs on 01425 471421)Rods are still being made...new info suggests T66 OR T70 gotta get mucho advice i like to see all views then make my own mind up..as contary to popular beleif Mark is NOT speccing this engine just giving friendly advice as a mate Your mouth is gonna drop in around 3 months Dougy when you see the greatest DIY engine in YB history

 

A T4/TO4R would do the job.
They max out at about 750-800bhp apparently, but ive never used one personally.

 

 

Here you go phil mate, even you cant moan at this price, 899 dollars!

http://store.yahoo.com/cheapturbo/garrettto4r.html

 

Basicly as youl be running big boost on the smallest possible turbo needed (so you got a decent powerband) its efficiency youl be wanting.

GT Series, Precision GTS, Turbonetics SuperT, etc etc

 

Itsmeagain, it wont be cheap enough for him that way probably, in fairness to the guy he isnt exactly planning on using it forever, so i can see his point in wanting to keep check on the cost of it.

 

I need a 5000 to 8000rpm rev band at the very minimum really.

Chip at present the engine is now NOT looking cheap...i just gotta commit to what spec i am gonna go...although 650-700bhp is the aim.

:

 

What spec engine can that go on?