Ceramic coated heat exchangers FAQ

mightyart

Ok I've started really messing with the heating, after replacing the leaky exhaust I still have a hint of exhaust in the heat. I bought new
manafold gaskets for the heat exchangers, and was going to remount them, after a good cleaning and inspection I noticed a few pin holes and a dent with a slice, ect. So I've decided to replace with new, also get the correct flapperboxes, I've got two different ones. So here is the question
what brand of exchanges should I look for, What else should I buy If I'm doing the whole thing, Should I get the heat exchangers powder coated or
Paint with header paint, or just leave them alone. Colin if you read this I may save this project till you get to this neck of the woods, so I can get it right.
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DurocShark · Posted: Mon Jan 24, 2005 9:33 am Post subject:

Here's who you want to talk to about ceramic coating:

Stan Wilder
Engine Ceramics
214-352-4931
www.engineceramics.com
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mightyart · Posted: Mon Jan 24, 2005 9:44 am Post subject:

That's who I was going to take them to. Just haven't contacted him yet.
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ratwell

mightyart · Posted: Tue Jan 25, 2005 7:52 am Post subject:

That's what I wanted to know, I'm not making a show car or anything.
New is the best time to coat something like this, I thought the may get to hot for paint. I may try some header paint, would just burn off if it didn't work. I'd like to get rid of the "surface rust" look they have after a few months, but you're right, these I'm sure are 25 years old and are for the most part solid.
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pawesty · Posted: Tue Jan 25, 2005 8:52 am Post subject:

Image may have been reduced in size. Click image to view fullscreen.

thses were cleaned,degreased,scuffed, and sprayed with por 15 manifold grey. still look good at 7k miles. took less than 2 hours to get it all done less the drying time.

dave[/url]
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Duncwarw · Samba Member Joined: August 25, 2003 Posts: 3094

Art, funny you should bring this up.

I found this page a couple of days ago and found it interesting. Maybe you will too. http://www.centuryperformance.com/heatwraps.asp#

mightyart · Posted: Tue Jan 25, 2005 5:34 pm Post subject:

Thanks guys, I like the way Pawesty's looks, that was what I was after.
I just want them to age well. I used header wrap along time ago when it was the "thing" to do on headers. What I remember the most was how much it cost for the amount of header you had to cover, so I only used it once. Laughing

Thanks for the link, Ceramic coating looks nice, with the climate here, I don't need the insulation really. I wonder how easy it would be to chip the ceramic coating under there?
I think I'll try paint, so where would one purchase por 15?
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ratwell · Posted: Tue Jan 25, 2005 5:45 pm Post subject:

Duncwarw · Samba Member Joined: August 25, 2003 Posts: 3094

I guess there must be vendors out there selling it, but here's Restomotive Labs' site: http://www.por15.com

I'm sure Colin can tell you how hot they get, but the regular POR is good for 600 degrees. As Richard points out, go for the hi-temp option. I used a header paint that's supposed to go to 1200 continuous, but who knows. The POR stuff seems to be bulletproof!

Duncwarw · Samba Member Joined: August 25, 2003 Posts: 3094

Damn Richard, you only got me by seconds that time! Very Happy

I need a typing class...

Miguel Arroyo · Posted: Tue Jan 25, 2005 6:43 pm Post subject:

I just purchased from ISP West a german muffler and J Pipes. Both were ceramic coated and delivered for $160.00 including an installation kit.

obieoberstar · Posted: Tue Jan 25, 2005 7:45 pm Post subject:

the POR15 manifold grey is the way to go. the exhaust on my beetle looks great after 7 years. some discoloration in spots on the muffler.

the bus' exhaust got painted (after blasting and primer) with Duplicolor's Engine Enamel rattle can stuff. Color was New Ford Grey. it really makes the type3 and type4 fan housings look good after a little sanding.

Sylvester · Posted: Tue Jan 25, 2005 7:58 pm Post subject: POR 15

Does POR 15 for high temps have the ability to paint on an exchanger or muffler with rust already on it, or do they recommend getting it all off first? Sounds like if they recommend getting the rust off, then it shouldn't be called POR.
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visibleink · Posted: Tue Jan 25, 2005 9:31 pm Post subject:

I'm pondering the same thing for my new german exhaust sitting in my bedroom and my heater boxes I don't have yet.

Guy on the type 2 list did the high temp powder coating thing and it looks great even after 15k miles. The cermanic ones are so friggin expensive it will knock yo socks off.

I'm going to do the high temp POR15 paint. I think it goes up to 1400 degrees. I haven't found any other high temp paint close to that, the ones in a spay can go up to 400 and will just flake off in a few days.

For the guy(s) that have already done the POR15 high temp stuff, did you spray or brush on? (It says you can do either)
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2jmotorsports · Posted: Tue Jan 25, 2005 10:12 pm Post subject:

Well the normal POR paint flattens itself out very nicely if you brush it, I would think the high temp one should as well...id say test it out on a small piece of metal or a hidden section on your exhaust...

obieoberstar · Posted: Tue Jan 25, 2005 10:14 pm Post subject:

just brush it on. after it cures you will not be able to see the strokes. well, maybe if you don't look REALLY close. brushing is fine.

ratwell · Posted: Tue Jan 25, 2005 10:51 pm Post subject:

Greggyboy · Samba Member Joined: December 08, 2004 Posts: 30

Why ceramic coat them? JUST rust protection or do you want better heat up front? Did anyone notice better heat up front after doing this? I really want to know.

VWBusrepairman · Samba Member Joined: July 06, 2004 Posts: 4726

My heat exchangers look similar to those in the pic. Fortunately, the engine I took them from had massive oil leaks, so they were preserved from the oil contact. Sounds like some nice manifold paint might do the trick for longivity.

as for your "hint" of exhaust- did you use new brass rings where the manifold attaches to the head? Also new gaskets between each connection? It's bliss when the system is all sealed and the heat is actually nice.

Good luck!


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