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Old 11-03-2005, 07:54 PM   #1
2hip
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Default DIY Exhaust Ceramic Coating **Updated with pics**

I did a search and I see a few people mention this but didn't see a thread discussing it.

I'm getting a up/dp and was thinking about wrapping them, but then I heard bad things about wraps like they can retain moisture and can possibly catch on fire. So then I thought about some sort of coating but didn't like the cost associated with it. Then I found Tech Line Exhaust Coating **link** which is a do it yourself. Requires no baking (Engine heat bakes it) and with stands up to 2000f.

I'm wondering if I could get some feedback from people who have used it and whether the inside of the dp should be done as well.

Thnx - 2Hip

**Update 12/11/05**
Well I finally got around to coating my pipes and wanted to share a couple of pictures for anyone considering doing this.

Stromung Downpipe


Stromung 3rd Cat Delete


Helix Uppipe


Hope to get everything installed next weekend and flash to Stage 2!!

Process I used:
-Bought a used set of pipes from For Sale section.
-Bought Black Satin from Summit for $28 shipped.
-Rented a hand-held sand blaster for $15.
-Bag of play sand from Home Depot for $2 and blasted the pipes. (Couldn't find any media so I had to improvise.)
-Wiped everything down with acetone.
-Masked off the holes and studs.
-I couldn't find a paint gun to rent but did see a paint gun set at Home Depot for $25. My neighbor is a auto-painter so he took them to work, sprayed, and baked them for me.

I didn't do the insides as the pipes were used and didn't want to worry about bad paint adhesion in the uppipe. I realize that this may cause some stress on the parts but I don't think I'll see a failure any time soon. I did this more to keep heat soak down.

2Hip
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Last edited by 2hip; 12-11-2005 at 10:26 PM.
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Old 11-03-2005, 08:44 PM   #2
Rick Schu
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How do you apply it?
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Old 11-03-2005, 09:04 PM   #3
fat angel
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by brush. ive looked at this too. should get it and do a review on it.

summit has it for 19.95.

Last edited by fat angel; 11-03-2005 at 09:26 PM.
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Old 11-03-2005, 09:07 PM   #4
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theres another coating called por15? or por 50? something like that.

I've heard of ppl using that to coat turbos, etc.
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Old 11-03-2005, 09:09 PM   #5
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I have used it on my manifolds and turbine and its work great!Costs $25 for 4oz which is enough to do 2 sets of manifolds and 2 turbine housings.It can be applied by paint gun or hobby air brush.Its best to blast the parts with aluminium oxide and then clean/prep. with acetone.Bought it from here
http://www.caswellplating.com/aids/techline/index.html

Last edited by quazimoto; 11-03-2005 at 09:14 PM.
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Old 11-03-2005, 09:24 PM   #6
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Quote:
Originally Posted by garie
theres another coating called por15? or por 50? something like that.

I've heard of ppl using that to coat turbos, etc.
Por15
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Old 11-03-2005, 10:12 PM   #7
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im not sure but i think por 15 is more geared for chassis undercoating to prevent from corrosion. I do some offroading in my jeep and have seen this advertised as an undercoating. im not sure of its heat retention properties.
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Old 11-03-2005, 10:28 PM   #8
2hip
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I just looked at the Por15 site and it looks like the highest temp resistant coating is 1400f and doesn't say anything about containing ceramic. The Tech Line is rated at 2000f, which I believe you shouldn't see any temps that high unless something is seriously wrong.

dumdum - How has the coating held up for you and do you think its a good idea to do the inside of the dp? I wouldn't do the inside of the up, wouldn't want anything flaking off.

I was thinking about scuffing the pipes with scotch-brite, cleaning with acetone, and using a brush to apply it.
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Old 11-04-2005, 03:04 AM   #9
Richmond WRX
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I haved used por15 on the camaro my dad and I are working on on. Cool stuff but not something to be used on your turbo or anything else that gets that hot. Its great for undercoating as streetyj said and its also pretty cool cause it can be painted on with a brush and the brush strokes disapear as it cures.
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Old 11-04-2005, 10:08 AM   #10
ride5000
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i believe crazymikie on this board has used it on his manifolds. maybe he will chime in.
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Old 11-04-2005, 10:38 AM   #11
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Summit seems to be slightly cheaper for the Techline stuff. They also have a turbo-specific coating, but they don't give much info. on it:

http://www.techlinecoatings.com/Exhaust.htm
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Old 11-04-2005, 10:49 AM   #12
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Quote:
Originally Posted by TedMeyer
Summit seems to be slightly cheaper for the Techline stuff. They also have a turbo-specific coating, but they don't give much info. on it:

http://www.techlinecoatings.com/Exhaust.htm
Thanx for reposting the link in the very first post.
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Old 11-04-2005, 10:53 AM   #13
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Quote:
Originally Posted by 2hip
I just looked at the Por15 site and it looks like the highest temp resistant coating is 1400f and doesn't say anything about containing ceramic. The Tech Line is rated at 2000f, which I believe you shouldn't see any temps that high unless something is seriously wrong.

dumdum - How has the coating held up for you and do you think its a good idea to do the inside of the dp? I wouldn't do the inside of the up, wouldn't want anything flaking off.

I was thinking about scuffing the pipes with scotch-brite, cleaning with acetone, and using a brush to apply it.
I have had no problems with flaking!Is your downpipe stainless steel?I would contact Techline and ask them how to approach your application to make sure you get it right the first time.I wouldn't really bother with the inside.This stuff is 95% prep work and 5% application so prep is super critical.
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Old 11-04-2005, 11:04 AM   #14
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well i'm ordering the techline satin black for my header. that was the one thing i didnt like about going aftermarket. i'll let everyone know how it goes, since there isnt a review on it.
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Old 11-04-2005, 11:17 AM   #15
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Por 15's biggest point is that it can be painted directly over rust and will seal it in. Maybee thats why some people tried it on thier turbos. But its definately not for high head situations
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Old 11-04-2005, 12:47 PM   #16
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What do you guys think about painting the heatshield over the turbo with this stuff? Would this make a difference in IC heat soak? Seems if I get the smallest can it would be pretty cheap to do.
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Old 11-04-2005, 01:30 PM   #17
2hip
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I sent Tech Line an email asking them about using scotch-brite to texture the pipe and a brush to apply it. I'll post the update once I receive it.

dumdum - My downpipe is the Stromung Shorty DWG type (which hasn't been delivered yet) so I'm not sure it its stainless steel. Looked at Stromung's website and it doesn't say, as a matter of fact it might be the worst manufacturers website I've seen. I'll skip coating the inside of the dp.
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Old 11-04-2005, 02:40 PM   #18
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Got a response from Tech Line:
"You do need to sandblast clean and spray on. The method you suggest will not work."

Argh...was really hoping to not have to buy one. Guess I'll check the local tool rental place and see if they rent one.
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Old 11-04-2005, 02:43 PM   #19
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Isn't the whole point of ceramic coating that you coat the inside of the pipe, not the outside? Or both sides, but the inside is what makes the difference.
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Old 11-04-2005, 02:49 PM   #20
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I'm by no means an expert on this and I imagine coating the inside would be ideal but as long as the outside coating is trapping the heat in, there should be some benefit. I'm more worried about heat soak into the engine compartment because there are no heat shields then getting the gasses to exit faster.
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Old 11-04-2005, 03:08 PM   #21
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how much does jet-hot and that other big coating company charge for a suby manifold? I have heard only the best about thier coatings
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Old 11-04-2005, 03:11 PM   #22
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Quote:
Originally Posted by Rick Schu
What do you guys think about painting the heatshield over the turbo with this stuff? Would this make a difference in IC heat soak? Seems if I get the smallest can it would be pretty cheap to do.
Thats not a bad idea!Also too Tech line sells a thermal dispersent coating that is used on intercoolers and intake manifolds.
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Old 11-04-2005, 03:47 PM   #23
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I used pre-mixed, spray-on black satin on my headers and it worked quite well.
I sprayed on 1 coat, stuck them in my buddies huge grill at 450 degrees for about an hour then repeated the process. I was pretty impressed, they were cool to the touch shortly after pulling them out.

A friend used the VHT 1500 ceramic paint on his bosal downpipe and it worked really well. I don't think it would be suitable for headers or an up-pipe, but it made a big difference on that down-pipe. It didn't radiate heat like before and you could touch it shortly after shut-off.
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Old 11-04-2005, 06:34 PM   #24
fat angel
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Quote:
Originally Posted by 2hip
Got a response from Tech Line:
"You do need to sandblast clean and spray on. The method you suggest will not work."

Argh...was really hoping to not have to buy one. Guess I'll check the local tool rental place and see if they rent one.
i'm still gonna try the ghetto way and see what happens.
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Old 11-04-2005, 06:42 PM   #25
2hip
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Quote:
Originally Posted by drwrx
I used pre-mixed, spray-on black satin on my headers and it worked quite well.
drwrx - Is this the same Black Satin from Tech Line? Where did you find it in a spray? This would make the process much more simple.

fat angel - Let us know how the "gheto method" works. I was thinking about doing the same thing.
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