[DeTomaso] Exhaust coating questions?

[doug351c]

Steve,

Powder coating of headers is COMPLETELY out of the question.  Conventional
powder
coating at 400-450 deg F while normal exhaust temperatures range from
600 to 900 deg F.  When you really lean on high horsepower motor, the
exhaust
temps can easily reach 1200 deg F, hence the need for high quality valves in
a
performance engine.

http://wiki.answers.com/Q/What_temperature_are_exhaust_manifolds_on_a_runnin
g_car

Doug Braun
blue 73L #5505

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of
steven.liebenow at att.net
Sent: Tuesday, July 13, 2010 11:30 AM
To: mailing list detomaso
Subject: [DeTomaso] Exhaust coating questions?


Options.....

Jet Hot

Ceramic coating

Powder coating  (same as ceramic?)

Issues:  do the vendors blast and coat the inside and out of the headers?

Do the headers need to be virgin steel or can you give them your old nasty
headers.....?  OK, not that nasty.....slightly nasty....

I have one set that was treated back in the 70s-80's with that rough
aluminum
coating crap  (electrostatic spray??) that Hall used on his
headers......touch
them with a greasy finger and they stay dirty forever....    This stuff
would
need to be removed.....

Pluses and minuses anyone?????

What holds up, what doesn't?

Chipping/peeling?

Discoloration?

Yes I tried the search..... :)
Thanks!
Steve