Topic: Internal coating for exhaust headers?

[Kikemon]

I couldn't find much on this in the archives, so I hope it is not an old topic (seems it should be). I just bought an essentially new exhaust system for my '75 CB400F and wanted to do whatever I could to keep it from rusting for as long as possible. I use the bike as a commuter, it rains all the time here and do not have the option of only running it for >30 minutes to get it good and hot, so it will be parked before fully warmed.  I know a lot of the rusting problem is from condensation from water produced by combustion rusting from the inside. I read one post about zinc coating the inside (how?) and running 2 stroke oil through the gas. Would something like Kreem Blue Shield help? Is there something else like that out there that might help? Or should I just start an IRA account specifically for exhaust replacement as it is only a matter of time...  Thanks for any advice

[Geeto67]

jet hot can coat the inside, I forget for how much but it is not hard to find them to ask (I think it is $200 to do the outside).

I have heard of some guys drilling a very very small hole at the lowest point in the exhaust to allow condensation to run out, I've never done it and I don't recommend it.

[mkramer1121]

You can do the following as a cheap and effective way to coat the inside of your headers.  Buy some VHT High Heat Cearmic paint, their website says white, and spray a can down the tube (silencer removed).  Do a whole can a pipe, let it somewhat back on the bike and run it to bake the paint.

[BobbyR]

You can actually do the old school trick and coat the inside with heavy oil and let it burn down to a crust. 

[MRieck]

I've had HPC do inside/out. It does work.

[Bob Wessner]

Wondered who/what HPC was so I though so might others..

http://www.hpcoatings.com/

[ProTeal55]

Most shops that powdercoat can also ceramic coat (for high heat applications)..
I had the headers and exhaust on my last racecar ceramic coated inside and out..

[dagersh]

I had the Headers and Pipes on My '86 Moto Guzzi Lario Jet Hot Coated.  They are awesome, did an amazing job, and cool down really fast.  Highly recommended.  I wil be using them to coat a '76 Goldwing exhaust and headers.

Gersh