Originally Posted by
fraser9764
why do you need an external wastegate? surely if you are on a standard manifold an internally gated turbo will be fine.
The turbocharger internal one is unable to cope above 5500 rpm, the boost just rises as the revs rise and with w/g fully open! I'm on a stroker kit also...
Originally Posted by
xr4x4rs
or just go 2wd manifold and get a a trouser part off reyland already done to accept a external wastegate
I might think about that but space is a bit restricted...
Originally Posted by
scruffythefirst
I'm just doing this at the moment. I don't have room for a 2wd manifold and need to do the wastegate piping myself. I'm going to mill a hole in the right place at the angle i need and then insert a mild steel tube. I'll tack it in place with a mig and mild steel wire and then take it to a welding shop who specialise in cast iron and get them to do it. From what I've read it needs pre heating and then cooling very slowly to stop it cracking. Mild steel should flex enough in use to stop it cracking, stainless would most likely crack. As the whole lot will be going to Zircotec it should be nice and rust proof when its ceramic coated.
That thing with the mild steel tube sounds good! The tube will flex and with good preheating and ideal cooling for anealing it should be fine...
The only problem is who on earth can do it here properly?
