Fw: Broke exhaust valves on 4000 turbos

[isham-research.freeserve.co.uk at pop.pol.net.uk]

> We finally got Seans car taken apart tonight and yet anouther
> broken exhaust valve.  This time #3.  This makes 3 confirmed valve
> breakages in 4ktq's that I know about.  All seem to happen the same
> way.  2 of the 3 had good intercoolers 1 even being a stock 5kt
> intercooler.

> They all apear to have broke near the base of the stem.  So does
> anybody know if the 10v turbo's in 5kt's have had problems with
> valve breakage?  If they do I have never heard of it.

What engine/head/cam?  Sodium-filled valve stems?  Was a proper
turbo engine head fitted, or is it the original non-turbo head?

I've never seen a stock engine break an exhaust valve.

-- 
 Phil