RE: ceramic coating and 2-piece EM...

["Buchholz, Steven" <Steven.Buchholz@kla-tencor.com>]

> > > it yourself kits like Ceramakote are even cheaper and 
> work very well..
> >
> > Just hope no big chunks peel off, 'cos the next thing 
> downstream is a
> > turbo impellor at 20,000+ rpm.  It ain't gonna peel at idle, is it?
> 
> Rather along the lines that I was thinking except I'd 
> reckoned even little
> pieces might come off (might? with a DIY kit I'd reckon that 
> it's got to be
> certain to lift).
> 
> The coating might be inexpensive but if it wrecks a turbo....

... I really wonder how delicate the exhaust turbine really is.  I've gotta
believe that it normally has to put up with a flaming chunk of carbon every
so often.  I have seen first hand what a piece of hardware can do to to a
compressor wheel, but I've got to believe that a turbo can pass some light
weight, brittle ceramic material without slowing down ...

It is my understanding that the ceramic material actually ablates over time
with the heat.  When I consider the benefits in terms of extended life of
hoses and wiring insulation, not to mention less thermal stress (with
perhaps less likelihood for cracking) on the EM I know which way I will be
going on my cars!  I doubt I'll do the DIY route, but my EMs will have a
ceramic coating on the inner surface ...

Steve Buchholz
San Jose, CA (USA)