Carpokes Porsche Forum

mwc951 wrote: Sun Dec 04, 2022 8:03 am I prefer Jet Hot coating.
Classic Polish is good to 1250 degrees and looks beautiful.
I did heat shields, coolant pipes, etc.
The turbo down pipe & WG pipes got Ultra good to 2500 degrees.

Tom wrote: Sun Dec 04, 2022 8:13 am That intake looks fantastic. I've done jet hot several times, and it does work, look great, and last a long time. My only reservation about them is that two times I've had the 2/3 header come back with the flanges warped enough to make getting them on a real challenge. One of the was so bad it now serves as a door stop for my backyard gate... If I were to do it again, I'd be tempted to make some kind of thick steel mounting flange to bolt them to, in an effort to reduce or eliminate warp. They don't warp under the heat of the exhaust, so figure that must happen as a result of baking the coating without the flanges bolted to anything....

mwc951 wrote: Sun Dec 04, 2022 12:59 pm

Tom wrote: Sun Dec 04, 2022 8:13 am That intake looks fantastic. I've done jet hot several times, and it does work, look great, and last a long time. My only reservation about them is that two times I've had the 2/3 header come back with the flanges warped enough to make getting them on a real challenge. One of the was so bad it now serves as a door stop for my backyard gate... If I were to do it again, I'd be tempted to make some kind of thick steel mounting flange to bolt them to, in an effort to reduce or eliminate warp. They don't warp under the heat of the exhaust, so figure that must happen as a result of baking the coating without the flanges bolted to anything....

I have a set of SFR Stage 1 headers waiting to replace cracked OE header.
Want to have them coated before installation.
Great idea Tom. I'll follow your advice and bolt them to a jig before sending them off.