captiva

Within the confusion of upgrading my Garrett T3, Cossie 4x4, I cannot get a handle on what a T34, T35, T38 is Everyone tells me differently, what I want is a T34 (I think) as I have Stage 3, 803s, 3 bar, NMS chip. Some people on this forum say it is an easy conversion to do yourself i.e. machining out the housing, others say buy a ready built one by Turbotechnics or similar. Gimmee the facts............................................

tabetha

2wd and 4wd cossie as you know have T3.
ESCORT COSSIE has a larger T34 for the large turbo model.
The T3 housing is able to be machined out to the same INTERNAL SIZE as a T34, (COMPRESSOR SIDE).
It will not look on the OUTSIDE as big because it is ISN'T, not on the outside, but same internal and uses the same comp wheel.
The TURBINE side of the escy(large turbo model) uses a .63 housing as opposed to T3 .48 housing so it has more area but of copurse more lag as a result.
If you have the facilities you can DIY,but if you bugger it up the housings are not cheap.
Why not do a upgrade to T34 with 360 + step gap seal ?
T34 very nice compromise, best to keep as small as poss to get the job done, as less lag that way.
T34 will go up to around 410/420bhp, with other modds.
T3 as standard never suited to any higher boost than it had from ford, as only a 270 degree bearing.
tabetha

krisberic

is there any way of identifiying the difference, not sure wot is on mine, its running stg 3 and goes off me boost gauge so presume 3o psi. If its a standard t3 its not gonna last long

tabetha

Just look on the TURBINE and COMPRESSOR HOUSINGS, they have it stamped on.
What power does it make ?, this will give a big clue due to higher flow rate of any enlarged/machined housing.
The ACTUAL CORE of the T3 and the T34 is the same.
If you are on a machined T3 lets just hope the bearing was done at same time, you will know soon enough at 30psi!!.
tabetha