Having had my zetec turbo on the road for around two years now the clutch all of a sudden has started slipping as soon as you hit anything over 5psi of boost. Its got a 4 paddle ap and an standard pressure plate (i think). The clutch was bought second hand but had be resurfaced. Got the karlos g hydro clutch conversion. Has always been juddery when driving around town but never been slipping in boost.

So what would people suggest as a replacement clutch?

 

Can't the gearbox or crankshaft seal be gone that there is oil on the plate making it slip?