Smoking VHT header paint?

[007brendan]

I painted my exhaust with VHT flameproof header paint.  The instructions on the can say you cure the paint by running the engine at idle for 10 min, then let cool 20 min, then run for 20 min again.  I let it run for about a minute but there seems to be a lot of smoke coming off the exhaust.  At first I thought there was a leak, so I loosened the rear exhaut bolt near the muffler and retorqued down the exhaust header bolts.  Restart the engine, and after a minute or so, same thing, lots of smoke.  When I turn the engine off, it still smokes for a while and it looks like its coming directly off the exhaust headers.

Anyone used VHT?  Is it supposed to smoke this much?

[RossLH]

Let it smoke. It's normal for VHT to smoke when curing.

[The Buddha]

You got runs and several layers of paint sprayed on it ? yea smokes like a beeeeyaoootch.
Cool.
Buddha.

[Soloratov]

I used that kind of paint all over the bike and baked in an oven. (doesn't smoke in an oven)

But for the exhaust, I found the best method is to sand it really well, paint a nice thin coat, run the bike for 10 minutes. Then do another layer, once it's cooled. Repeat the paint/heat process 3 times. Then let it sit overnight. After a good ride the next time, it's hard as a rock.

[The Buddha]

I used that kind of paint all over the bike and baked in an oven. (doesn't smoke in an oven)

But for the exhaust, I found the best method is to sand it really well, paint a nice thin coat, run the bike for 10 minutes. Then do another layer, once it's cooled. Repeat the paint/heat process 3 times. Then let it sit overnight. After a good ride the next time, it's hard as a rock.

You may not have got the oven hot enough to cook the paint. Exhaust paint really needs that temp ~700 or so to cure. My local powdercoater used to cook it with the usual 450 degree oven, and still tell me to handle it with kid gloves till its cooked on the bike.
Cool.
Buddha.