Sierra T3.48 vs. T34.48

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Jan 30, 2008 | 12:11 PM

Mathias

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From: AUSTRIA

Sierra T3.48 vs. T34.48

HI!

Can someone tell me the difference between a normal Sierra 4*4
turbocharger (T3.48) and a T34.48?
Is it just the compressor wheel and the compressor housing, or also
some differences at the exhaust side?

Jan 31, 2008 | 04:21 PM

tabetha

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From: uk

As you say comp housing/wheel is different and the exhaust housing is MOVED around in realtion to 2wd, so actuator sits in a different postion, but easy to have either way.
tabetha

Feb 1, 2008 | 09:36 AM

Mathias

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From: AUSTRIA

So just the bigger compressor wheel, increases the power for about
50-70bhp with nearly the same lag as an original T3 turbo?

Feb 1, 2008 | 06:06 PM

TurboShed

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From: Liverpool

I think 50-70 will be disputed around here.

Feb 1, 2008 | 08:20 PM

mechanic28

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From: london

T3 generally max power u will get is 330bhp,a T34.48 max power on the right set up with greys or light blues 360-370bhp

Feb 5, 2008 | 02:37 PM

florent78

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a friend say me the theorical limit for the .48 house with the t34 is 1,5 bars
after the .48 housing is to small for the gass flow

what do you think

is it right ??

Mar 31, 2008 | 01:41 PM

KSA-Cossie

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Ran mine at 28 psi.

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Mar 31, 2008 | 10:10 PM

Twellsie

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From: Nuneaton

Quote:

Originally Posted by florent78

a friend say me the theorical limit for the .48 house with the t34 is 1,5 bars
after the .48 housing is to small for the gass flow

what do you think

is it right ??

mine runs more than that on my T3

Apr 1, 2008 | 10:32 AM

Jasesapphy

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From: Bournemouth, Poole, Dorset

wont get a real world 370bhp on a .48, around 350 is usually about max despite what a lot of people say.

Ask a tuner

320 max really on T3 and 350 on the T34, exhaust housings the same but bigger front wheel

Last edited by Jasesapphy; Apr 1, 2008 at 05:03 PM.

Apr 1, 2008 | 10:50 AM

#10

Chip

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Quote:

Originally Posted by Mathias

So just the bigger compressor wheel, increases the power for about
50-70bhp with nearly the same lag as an original T3 turbo?

You get more lag with the bigger compressor wheel, as it takes more exhaust gas before the turbine wheel has enough force to spin the larger compressor wheel up to a similar speed.