2 piece EM welding, skimming, and coating

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

> I agree that pre heating and proper cool down probably increase one's
> chances of sucess 95 %.
> As far as Phil's comments about a failing engine mount problem affecting =
> the
> manifold ; after analyzing exactly where my manifold was cracked (and
> Gerald's too),  I think we can safely say that it cracked in the hightest
> heated area which sees the most flow.  This is the bottom / outside radiu=
> s
> of the collector (which carries gases from several cyliders) and is direc=
> tly
> in front of the turbo.  I don't see this area as impacted by a twisting
> engine or exhaust system,  just the most concentrated area of exhaust flo=
> w
> and therefore heat...

Trust me.  Pull the engine mount and change the heatshield.

Also - you missed the crack just inboard of #4 port.  Invert the
manifold, with the head mating surface uppermost.  Flood the inside of
the ports with WD40 (this is one of the things it's good at) and note
the spreading wet stain on the outside between #3 and #4.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone +44 7785 302803   Fax: +44 7785 309674