My mate got a 2wd saff for silly money, theres a few problems with it but considering the price he could'nt say no.

I'm presuming that considering its size the tubo fitted to the car its a T4 - it says A/R .50 on the compressor housing. Its has a 3 bar map sensor, greens, RS500 intercooler, exhaust and cone filter.

It feels gutless to drive and according to the secs monitor its only reaching 5.3psi. There is a bleed valve fitted to the dash but its not connected to anything and there is lots of vacuum tubing tee'd here and there and running all over the place and none of it made any sense.
So what I suggested we do is just return it to the factory set up.
So starting from the nine o'clock postion the connection on the amal valve is now running to the waste gate, the next - 11 o'clock postion which shoud be running to the turbo I presume has no connection to go to? and the last connection is to atmosphere.

What should I do now and how do I make sure its not going to run too much boost?

 

The connections are as follows 9 , o'clock to WASTEGATE ACTUATOR, 11, o'clock to turbo high pressure side, the last on eas you say normally goes to the airbox, as it is a VENT OFF.
The centre one should go to a BRASS STUB in thE side of the COMPRESSOR WHEEL and FACES FORWARD, it should be easily identifiable.
tabetha

 

Thats the thing there is no connection on the turbo, I though maybe there was another way to connect it up. I'm still presuming the turbo fitted is a T4 (A/R .50), its huge compared to the T3 in my saff and has'nt got the cast actuator bracket that a T34 or the likes should have. Also where should the small tube from the thermostat housing be running to on a 2wd car?



I'm begining to get a sneaking suspicion this turbo did not come from another cossie!

 

On a 2wd cossie the small tube runs to the water cooling feed pipe for the turbo and joins a metal pipe that runs from the side halfway up the turbo to underneath and then heads towards the thermo housing where it joins the little piece of pipe on the thermo stub, I am not even 100% sur if the T4 is w/cooled ?, there on on the early thermostat housings TWO STUBS on the side of it both pointing towards the turbo, one is for bleeding the cooling system of air upon refill etc a tube is put on there and held upwards but not really needed, drill a small 3mm hooes in top of thermostat instead!!, later ones had only one stub.
I don't know 100% where the connection is on the T4, but so long as it goes on the HIGH pressure side, ie the side with the boost pressure, that will be fine as it is this that it needs to know, so that is anywhere between turbo compressor and plenum, so a stub on the plenum cover might be easier ?
tabetha

 

That is one GROTTY engine bay LoL!

 

The guy who now owns the car got on to the guy who sold it to him to ask him about the turbo and according to him the compressor started life attached to a Scania truck!

 

Highly unlikely he was telling the truth then!!
Petrol runs so much hotter than diesel normally but not always made of a HIGH SG material that would not be the same material used on a diesel one, and would most likely crack on a petrol, operating window would be totally different also.
tabetha

 

The turbine side of the turbo looks like standard T3, water and oil cooled/lubricated. It just looks like the compresor cover and perhaps the compressor its self are different. Very strange though and probally not suited to a small (by comparison) capacity engine.