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General Category >> Rubber Side Down! >> Header / Muffler Paint
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Message started by pgambr on 09/27/13 at 17:54:08

Title: Header / Muffler Paint
Post by pgambr on 09/27/13 at 17:54:08

Does anyone have a good thread and or advice on how to paint a header pipe / muffler? I have tried once in the past and it didn't stay on their very long. I don't think I let it cure long enough. Also, I used paint that had a max temperature range of 1300 - 2000. Any help would be appreciated. Best regards.

Title: Re: Header / Muffler Paint
Post by pgambr on 09/28/13 at 17:03:23

The auto shop told me to use high temp primer? Maybe let it sit for 72 hours? Does any have any thoughts? Thanks.

Title: Re: Header / Muffler Paint
Post by justin_o_guy2 on 09/28/13 at 17:09:20

Ya know,, you can get a ceramic aplied to the header, IDK about mufflers

Title: Re: Header / Muffler Paint
Post by Dave on 09/29/13 at 08:01:52

The key to making this paint work....is the prep and curing. The chrom must be taken off for best results....or at a minimum thoroughly roughed up so that no shine remains. I took mine and they sandblasted off the chrome. Then I use the 2,000 degree Rustoleum ceramic stuff. Then I set it in the sun for a few days to cure.......lettting it sit in your hot car during the day also is a good way to get it to have an initial cure. I did not have an oven big enough to cure it in....so I would start the bike and let it run for 15 seconds...then shut it off and let it cool. I did this for several hours....each time letting it run for just a few seconds more. You don't want to get it so hot the paint smokes. If you take your time curing the paint....it is pretty durable but does not last forever....especially if the bike sits outside or you ride a lot in wet weather. The most durable stuff is the ceramic stuff like Jet Hot that you send out to hvae applied.

Title: Re: Header / Muffler Paint
Post by oldNslow on 09/29/13 at 11:30:51

http://www.vhtpaint.com/products/flameproof/

I don't have any experience with this stuff, but I came across the site while searching for paint for my clutch and stator covers, which they also make.
Might be worth a try.

Title: Re: Header / Muffler Paint
Post by WD on 09/29/13 at 11:59:26

Read your PM yet? My way works, but you'll still be repainting at least once a year. High heat paints are a joke on exhaust parts... But cylinder paints once cured will last 12 or 13 years, so pick the right color the first time.

Title: Re: Header / Muffler Paint
Post by pgambr on 09/29/13 at 15:24:24

Thank you for the valuable insight. I have been refurbishing & fixing my s40 for a couple months now. I can see the light at the end of the tunnel. It is running great and starting to look pretty good as well. Thanks again.

Title: Re: Header / Muffler Paint
Post by ToesNose on 09/29/13 at 18:17:55

Yea prep is key, like Dave mentioned sand/scuff any smooth surfaces and use a paint prep solvent too. Any type of residue left will cause the paint to prematurely peel or flake, especially with high heat applications.

Title: Re: Header / Muffler Paint
Post by SimeonC on 09/29/13 at 20:21:05

One of the best and most durable paint types that you can put on a high-temp suface is a silicone content high-temp powder coat. Baked at abt 400F but able to handle 1000F EASY!! and is much more durable than brush or spray on painting types... you will have to get it shop done but ive hade mine painted for over a year now with powder coat and there isn't a chip in it and ive dropped it from waist height on solid concrete and it still didn't chip ( I don't recommend) but pay tha extra and get a silicone content high temp powder coat. Pay the lil extra for quality :)

Title: Re: Header / Muffler Paint
Post by pgambr on 09/30/13 at 04:59:05

Interesting, what is ballpark cost? And what kind of shop as well? Thanks.

Title: Re: Header / Muffler Paint
Post by Dave on 09/30/13 at 05:38:53

I haven't sent anything to them yet....but this company seems to be one of the most affordable.

http://boneheadperformance.com/

Title: Re: Header / Muffler Paint
Post by Gyrobob on 09/30/13 at 06:42:10

The posts above saying surface prep is important didn't state the case strongly enough.

If I were going to do the exhaust pipe and muffler, I'd sandblast the thing to get a rough matte surface finish, then,,,, "DON'T TOUCH IT!!" Maybe blow it off with compressed air right before you paint it, but don't touch a to-be-painted surface with anything.

I build gyrocopters that, when airborne, have the engine running at about 75% power,... enough power to keep the exhaust header a dull orange color. The only rattle can paint that holds up for more than a few minutes, believe it or not, is Dupli-Color hi-heat black,.. and even IT has to be redone every 50 or 60 hours. It's not pretty, but it does stick. I only fly the thing about 10 hrs monthly, so 60 hours takes about half a year.

I'll admit I haven't tried some of the newer hi-heat rattle cans for a few years,... once I find something that works, I am reluctant to fool around with it. So,.. there may be some newer products that work as well, but for now I'll keep using Dupli-Color hi-heat black.

To cure mine, I set up a small portable heater blowing into a wardrobe box,.. the stiff cardboard kind that is used when moving. I do that for a an hour a day for several days. It probably gets up to 120 degrees in there. Then when I install the exhaust system, I let it run a few times at low power for a few minutes each time before I run it at full power.

Title: Re: Header / Muffler Paint
Post by pgambr on 09/30/13 at 21:07:31

Thanks fir the great insight. :)