Is a T34 a T3 with T4 rear housing?

Been offered one and its been sold as a T34, but im confused and i didnt realise it was that (If it is of course)!!

Joe.

 

It's half T3 and half T4. Usually a T4 conpressor with a T3 turbine for petrol engines, but for diesel I've seen it the other way around too.

 

theres no part of a t4 on a t34 mate, t34 is off escort coworth. they are the same as cosworth t3 but with bigger com housing.

 

correct.

 

are u shaw?????
u will find that a big turbo escos came with a t35. there was never a t34 turbo fitted to any cosworth car as its a made up turbo.
i may be wrong but think im corect.

 

t34/t35 same turbo.

 

So what's the advantage of having a t4 rear housing on a t3? More power output?

 

A larger back housing will spool up slower, won't get as hot and can run high boost as won't stall dew 2 the fact they can flow more air.
If a t34 and a t35 are the same y didn't they just call them t34s? A t34 is a modified turbo using components, where a t35 is a product that has been manufactured and sold.
But as I said before, might be wrong!!

 

Correct, T3/4 has a larger compressor wheel and housing than the T3 series has in its range. In fact, the compressor wheel is from the T4 range...

 

Because a t34 has a 48 exh housing and t35 has a 63 exh housing mate. same core and comp wheel

 

so when u said a t34 was off a escos up the thread u may wrong as there turbo has a .63
thats y its a t35 as stated in the spec list?
sorry just went threw all of this years ago and people still get confused.

 

T34 is not a production turbo.as above its a mixture of different componets from excisting turbos. I thought most people would know this.

 

Garrett's terminology for the Escort Cosworth turbo is a T03/4B. The T35 doesn't exist as an off the shelf item for petrol applications but there is diesel T35 for a DAF truck.

The 3/4 comes from being half way between the T3 range and the T4 range.

Cilly, the word you were looking for was “sure”!

 

So a t34 is basically a stage 3 t3, with a 48ex housings and 55trim comp? or a 60trim comp?

 

No! Read the above

 

Which part of it... Its all contradictive - Im trying to make sense of it

Some have sed its a t3/t4 hybrid others say its not etc etc...

 

It's not a T3 or a T4. It's a model of turbo which fits in between a T3 and a T4, hence the name T03/4B.

It has a unique .48 turbine housing, a 55 trim compressor wheel with a .63 compressor housing. Options being a .63 turbine housing and a 60 trim compressor wheel.

 

Remember, that the compressor "trim" does not describe the sixe, only the square of the inducer/exducer ratio. So, a 55 trim T4 compressor is still bigger than a 55 trim T3 compressor.

 

According to Burton Power a T34 is from a "Big Turbo" Early Escort Cosworth!