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Registered
Join Date: May 2004
Location: Tallmadge, Ohio
Posts: 217
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Painting Cast Iron 911 Cylinders
Can anyone recommend a paint for the cast iron cylinders on my 2.4?
I am aware that too much or the wrong kind of paint can interfere with heat transfer. Rust doesn't transfer heat very effectively either. Anyone try any of the PJ1 motorcycle engine case & barrel paints? Thanks, Bill
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Triplesn8s '72 911T Coupe - Resto Proceeding at a Snails Pace ‘80 TR8 Convert - SOLD '78 TR8 Coupe - Autocross Project '06 Ducati 1000SS/DS - ‘11 H-D XR1200x |
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11-19-2004, 12:14 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,435
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high heat black wrinkle finish. black dissipates heat too. heat them in the oven after painting to get the best wrinkle.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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11-19-2004, 12:47 PM
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Wo ist die Rennstrecke?
Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,210
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You might want to consider a high heat dispersant powder coating. There is real data out there that proves the coatings work in disapating heat and evening out any hot spots.
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11-19-2004, 02:22 PM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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Until there is data that shows how much an improvement in using a "heat dispersant" paint, I'd go with a light spray coat of flat black on top of clean base metal.
Sherwood |
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11-19-2004, 03:07 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,786
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I just had the oppurtunity to take apart a 2003 996 GT3 RS engine...The last people that turned a wrench on this engine was Porsche motorsports(or peter Dawe)..
the piston skirts seem to have been coated with "something" the piston tops seem to have been coated with "something" Thermal dispersants/barriers apparently do work. I dont see any reason why coating the cylinders with thermal dispersant would hurt
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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11-19-2004, 03:25 PM
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Wo ist die Rennstrecke?
Join Date: Mar 2004
Location: St Johns, FL
Posts: 1,210
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The data shows that the coating disapates heat 2x faster than bare aluminum - pretty impressive knowing aluminum's properties. On the other hand, if you think this is "snake oil", don't do it...
If you are interested, use Google and do a search on Thermal Dispersants. Or try this: http://www.techlinecoatings.com/introduction.html They supply most of the automotive coating people. |
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11-19-2004, 07:56 PM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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Thanks for the link. I know I will be shopping there. Dry film coatings on the piston skirts and ceramic coatings on pistions, valves and posstibly more. Oh and I can't forget the jet-hot like exhaust coatings.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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11-20-2004, 05:06 AM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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Other than Techline's claims or other companies that use Techline's product, I didn't see the data you were referring to on their website. In addition, I couldn't find any thermal dispersant studies during a Google search. Do you have any data you can share?
Thanks, Sherwood |
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11-20-2004, 02:56 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,786
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Just this afternoon, I held a 2003 996 GT3RS piston.. and compared it to an earlier cupcar piston.
The -03 GT3RS piston has some sort of coating on it! This engine was from a car that ran the 24 hours of Lemans last year.. thermal barriers look evident, anti friction coatings are evident.. Someone someplace is applying these coatings.. I love to open up an engine, where the last people that touched it works in Weisach
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Don't feed the trolls. Don't quote the trolls http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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11-20-2004, 03:47 PM
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Registered
Join Date: Oct 2001
Location: Momence, IL 60954
Posts: 1,911
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I have used the Techline Coatings thermal dispersant coating on every cast iron cylinder that I have had nikasil plated and have had great success with it. My only complaint with it, and other commercially/professionally applied coatings are that they are susceptible to flaking and chipping.
Charles Navarro LN Engineering http://www.LNengineering.com Aircooled Precision Performance |
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11-21-2004, 04:36 AM
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