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View Full Version : how do you paint exhaust parts and get it to stay?


thelostartof
11-04-2004, 04:09 PM
just asking for whatever reasons ... say is someone wanted to paint a downpipe. or manifold what kind of paint and how do you do it so the paint stays there

BoxDriver2
11-04-2004, 04:10 PM
just asking for whatever reasons ... say is someone wanted to paint a downpipe. or manifold what kind of paint and how do you do it so the paint stays there

Ceramic baked on.

Best bet, give em the part, and let them handle it.

V8BRICK
11-04-2004, 04:12 PM
I've used a black ceramic rattle can paint that has to be baked on or driven within 30 minutes of application (for about 30-45min) to cure it. It actually held up pretty well, a couple years if I'm calculating right. Think they sell it at any local auto parts store, got mine from advance auto.

thelostartof
11-04-2004, 04:14 PM
Ceramic baked on.

Best bet, give em the part, and let them handle it.


and when i want to paint my parts for my car?


ok so bake as in drive /heat it w/in 30 mins of applying paint .. that makes it hard to install the part haha but will try it somehow

volvogeek
11-04-2004, 04:16 PM
ok so bake as in drive /heat it w/in 30 mins of applying paint .. that makes it hard to install the part haha but will try it somehowAlternatively you could buy an old oven and bake painted parts in there. Just don't use it for cookies afterwards. :???:

blu92in99
11-04-2004, 04:17 PM
VHT makes hi-temp exhaust paint, so does POR-15 IIRC, but I have to agree with BoxDriver2; best bet is to have it ceramic coated (i.e. Jet-Hot) by the pros. Costs more, but usually comes with good guarantees.

I assume you're asking because you want to paint the DP's you're selling? ;-)

socalsean
11-04-2004, 04:43 PM
BBQ also works

The Aspirator
11-04-2004, 05:08 PM
Ahh ha, my specialty :cool: .

VHT 1500* spraypaint. I've been using the Aluminum color, but they come in yellow/red/blue/white/black/etc. All the colors seem to have a "flat" finish, which is fine by me. Make sure parts are CLEAN before painting, I beadblast my parts. I usally leave the center section and wheels alone. Spray at least 3 coats, letting each one dry in between. Then I turn on my BBQ to full HIGH (I'm guessing 400*) and BBQ them for 1 hour. Suprisingly it doesn't stink at all, so you might be able to use your oven if your wife will let ya. Let parts cool, handle with clean hands.

I've noticed that after painting on the aluminum colored paint, it looks just like bright aluminum, but after BBQ'ing them they turn a bit yellowish. Doesn't bother me, just an observation. I am VERY satisfied with how this paint is working out. On my brothers 60/63 we're going to try a funky color like white or red.

I've been painting my turbos for about 6 months now and have had NO peeling or chipping of the paint whatsoever. They look soooooooooo much better painted than they do all rusty and crap. **tip for future reference** After driving the car and heating up the turbo, don't touch it with your dirty work gloves!! The grease burns into the paint and stays there! ICK. So I just let it cool down and use clean rubber gloves to handle it.

60 trim and pre-90 manifold during installation (compressor housing is just bead blasted and clearcoated):
http://www.vipinfoservices.com/john/images/60trim12.jpg

Notice the slight yellow tint to the aluminum paint, no biggie:
http://www.vipinfoservices.com/john/images/60trim06.jpg

'90+ manifold painted and baked. This one suprisingly turned out PERFECT color, no yellowing at all:
http://www.j2mediagroup.com/john/Holset03.jpg

'90+ next to my used for 5 months painted 60 trim and mani, notice the grease stains from dirty gloves:
http://www.j2mediagroup.com/john/holset04.jpg

Here you can see how the manifold compares to the turbine houisng, the Holset turbine yellowed a lot. The compressor housing and head are just painted with some 500* paint:
http://www.j2mediagroup.com/john/holset06.jpg

Hope that answers your questions :rockon: .

John

the poi
11-04-2004, 05:37 PM
i tried that exhaust paint on my exhaust....and it doesnt work if its too far form the header, it never gets hot enough. I'd say use an engine enamel anything beyond the downpipe... i painted my DP with duplicolor hi-temp paint, and it seems to be a lot better than plastikote hitemp, and its hinier too! Havent baked it on yet, so im not sure how durable it is... but i dont think anyhting will give you durable results short of jet-hot coating it, so they're may be some scratches and stuff but at least it doesnt rust. then again, ive never tried to BBQ any parts like john suggested.... thoguh i dont have a bead blaster so i pretty much knew i wasnt going to get the rust off of it to make the paint adhere well. eh, i like that utilitarian look anyway :-D
http://www.pbase.com/765ti/image/35766761.jpg

DMFWallace
11-04-2004, 06:07 PM
Ahh ha, my specialty :cool: .

VHT 1500* spraypaint. I've been using the Aluminum color, but they come in yellow/red/blue/white/black/etc. All the colors seem to have a "flat" finish, which is fine by me. Make sure parts are CLEAN before painting, I beadblast my parts. I usally leave the center section and wheels alone. Spray at least 3 coats, letting each one dry in between. Then I turn on my BBQ to full HIGH (I'm guessing 400*) and BBQ them for 1 hour. Suprisingly it doesn't stink at all, so you might be able to use your oven if your wife will let ya. Let parts cool, handle with clean hands.

I've noticed that after painting on the aluminum colored paint, it looks just like bright aluminum, but after BBQ'ing them they turn a bit yellowish. Doesn't bother me, just an observation. I am VERY satisfied with how this paint is working out. On my brothers 60/63 we're going to try a funky color like white or red.

I've been painting my turbos for about 6 months now and have had NO peeling or chipping of the paint whatsoever. They look soooooooooo much better painted than they do all rusty and crap. **tip for future reference** After driving the car and heating up the turbo, don't touch it with your dirty work gloves!! The grease burns into the paint and stays there! ICK. So I just let it cool down and use clean rubber gloves to handle it.

60 trim and pre-90 manifold during installation (compressor housing is just bead blasted and clearcoated):
http://www.vipinfoservices.com/john/images/60trim12.jpg

Notice the slight yellow tint to the aluminum paint, no biggie:
http://www.vipinfoservices.com/john/images/60trim06.jpg

'90+ manifold painted and baked. This one suprisingly turned out PERFECT color, no yellowing at all:
http://www.j2mediagroup.com/john/Holset03.jpg

'90+ next to my used for 5 months painted 60 trim and mani, notice the grease stains from dirty gloves:
http://www.j2mediagroup.com/john/holset04.jpg

Here you can see how the manifold compares to the turbine houisng, the Holset turbine yellowed a lot. The compressor housing and head are just painted with some 500* paint:
http://www.j2mediagroup.com/john/holset06.jpg

Hope that answers your questions :rockon: .

John




do you want to do my intake mani and my headers?
intake mani = silver
header = black

The Aspirator
11-04-2004, 06:23 PM
do you want to do my intake mani and my headers?
intake mani = silver
header = blackWhatcha mean, you want to send me the parts and have me beadblast/paint them??? Naw, don't bother. Any machine shop and most good car stores (NAPA) should have a beadblaster. I got a turbine housing/compressor housing/manifold blasted for $15 before I got access to my own beadblaster. Plenty worth it. Get the paint at NAPA, and find someone with a BBQ. Easy peasy! :-D

John

Boosted2003
11-04-2004, 06:40 PM
Jet Coat It

dl242gt
11-04-2004, 07:54 PM
That VHT seems like decent paint. I have a Jet Coated MVP downpipe on the 82 turbo and that is holding up very well. The only decay is where the bracket holds it to the trans. I've painted normally aspirated type exhaust manifolds with the POR20 paint. It's lasted over 15 years before it started to flake off on my brother's Austin Healey Sprite. Great paint. It's aluminum colored like the VHT used in the above posts. I've never tried it on a turbo manifold but I'm planning to try it soon.

Enjoy the road,

stylngle2003
11-04-2004, 08:34 PM
im planning on getting my own blaster this xmas, with hopes of blasting and maybe painting and polishing people's stuff on here and other forums. ill let you guys know

gtlover
11-04-2004, 08:48 PM
Hmm...You'd think, that since I sell marine exhaust parts, I'd have the super bomb answer.

Problem is, the fishermen don't care what it looks like as long as it works and doesn't cost a fortune. And the yacht guys wrap it up in insulation anyhow. So we just use plain 'ol spray paint (Seymour Cast-Blast or Krylon Khrome) to make it look pretty for shipping. We do have a couple of customers who ask for everything in unpainted stainless, and I think that's a pretty good way to go - provided your exhaust is stainless, of course.

From my experience, go with what's been said - either the 'oven-baked' hi-temp paint, or the professional ceramic coating. Or, you can go with exhaust wrap for the racy look. DEI now makes it in black as well as white.*

*one little caveat, I know somebody will mention this - exhaust wrap has a wonderful ability to trap moisture and speed up exhaust system corrosion.

towerymt
11-04-2004, 09:51 PM
POR-20, brushed on in 2 light coats...peeled off within months.

coldfusion21
11-05-2004, 03:54 PM
i just got a crappy cheap beadblaster and i love it, and plus i can get all the bead i want for free (not that you need tons) i going to be building my own cabninet soon, so that should be nice. im planning on re-doing what john has done as his original pictures just look so nice.

pwschuh
11-05-2004, 09:27 PM
*one little caveat, I know somebody will mention this - exhaust wrap has a wonderful ability to trap moisture and speed up exhaust system corrosion.

This seems counter-intuitive. I understand that the wrap could hold moisture but wouldn't it dry out thoroughly every time the engine was used (from exhaust heat).

Hank Scorpio
11-05-2004, 09:36 PM
for my header, turbo and anything exhaust related, POR15 cast iron grey manifold paint. It DOES NOT BURN OFF and always dries great (regardless of how crappy you slop it on).

http://www.pbase.com/dkauer744/image/24983066 old pic

Gene_GaTech
07-10-2008, 07:31 PM
Will using a metal brush and some simple green be good enough to do a b20 exhaust manifold?

The Aspirator
07-11-2008, 11:35 PM
To clean it? Ummm, maybe, simple green is my favorite degreaser. But beadblasting really gets in there. It'd be worth a try if you're in a pinch, but I'd find a machine shop that would beadblast it for you for like $10.

Forg
07-12-2008, 03:16 AM
This seems counter-intuitive. I understand that the wrap could hold moisture but wouldn't it dry out thoroughly every time the engine was used (from exhaust heat).
No; the moisture stays trapped (it's steam not water of course) under the wrap.

People saying "Jet Coat" or ceramic coating; that stuff doesn't chip off or crack (unless you chip it of course), but it will discolour with usage. Depends where it is, I imagine behind the dump it'd last forever, but applied to a turbo exhaust manifold it will. It stays effective in holding heat, however.

Woah ... headspins from timewarp!!