Postby Triumph TR7V8 coupé » 08 Feb 2011 19:56
[quote]<i>Originally posted by FI Spyder</i>
[quote]<i>Originally posted by Cobber</i>
Enamel won't however be any use on the exhaust manifold as that bit does get to hot for it, there are so called exhaust manifold paint
The latest exhaust manifold paint I've seen is ceramic paint (good to 1500 degrees. Don't know how long it lasts. It's initially cured in an oven at 500 degrees then it must be put on and car run for the exhaust to complete the curing before a certain time frame or it will not cure properly and consequently not last. That last bit makes it suspect, can you put on the exhaust manifold fast enough. Not sure what Jethot Coatings would charge but for those DIY'ers you can buy stuff from your powder coating people. It's a ceramic in water slurry that you spray on with a cheap spray gun then initial curing in oven at 500 degrees then final curing is done at exhaust temperatures. It is true ceramic coating that gives you the heat retention of ceramic coating to keep your engine bay cooler as it passes the heat further back and out the tail pipe.
Hello guys and girls,
I've seen a lot of topics where people are complaining about the engine temperature, TR7/8's havent got the biggest fresh air induct. Painting your engine is like giving it a little fur coat, it keeps it nice and warm, perhaps even to warm. Exhaust paint has been developed for exhausts, enamel paint or hammerite for other purposes. If you realy want to paint your engine use the right type of paint so you dont risk any heating problems or cracking paint results. You can find on the market special paints for engine blocks, they are developed to even reduce the engine heat, naturaly they don't come cheap but is an engine overhaul caused by overheating cheaper?
Greetings, J.
