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post #21 of 25 (permalink) Old 01-09-2017, 10:28 PM
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Here's a discussion on speed talk about the types of TBCs and the possible plusses and minuses of each.
http://speedtalk.com/forum/viewtopic.php?t=34966&f=1



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Last edited by hatzie; 01-09-2017 at 10:33 PM.
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post #22 of 25 (permalink) Old 02-03-2017, 08:30 AM Thread Starter
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My exhaust system is back from Jet Hot, their 1300 on the muffler and 2500 on the header. Hope to have it running tomorrow and see how it performs.
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post #23 of 25 (permalink) Old 02-03-2017, 08:58 AM
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Looks great. Let me know what you think.
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post #24 of 25 (permalink) Old 02-03-2017, 12:26 PM Thread Starter
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Did a test run and the black piece still gets very hot near the bottom where its within 1/8 inch of the header. The new body panel has heat shielding but I'm a little pessimistic that it won't melt when pulling a trailer or mower this summer and disappointed given what I spent. The header and plastic are just so close there may be no good answer. I'll keep updating as time goes on and the temps in Missouri increase.

On the up side the tune did help out bottom end it seems stronger out of the hole.
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post #25 of 25 (permalink) Old 02-05-2017, 05:57 AM
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If I were coating the exhaust and expecting the coating alone to do the job... I'd lean toward the Swain Tech Coatings and DPR (Dan Paramour Racing) White Lightning Zirconium Dioxide based ceramic coatings on the header and intermediate pipes. I'd use the thinner Jet Hot coats on the muffler. The Ceramics are laid on at .015-.020".

The Organics like Jet Hot are laid on at .002" similar in appearance and function to a super high quality paint. These coatings will stay bonded to the parts and provide exceptional corrosion protection. The thinner layer, in theory, should not be as prone to thermal shock cracks. The downside is less thermal protection.

The Ceramic coatings are not as aesthetically pleasing but the thicker layer provides more thermal protection. In theory the heavier coating may be prone to thermal stress cracking but in practice it doesn't seem to be a problem... drag, road, and track racing is not done in wet and muddy conditions and mudding is wet from the get go avoiding the potential of going from dry and hot to large amounts of water being splashed on the headers.

The rules of the Universe say that eventually any Ceramic or Organic coating will heat up to the substrate temperature. They just slow the progress. That' just the way it is unless you have access to real magic.
A layer of insulating header tape should keep the heat in and the cold away from the parts to prevent thermal shock cracks and separation of the high priced coatings. It's probably cheaper to just wrap the pipes and buy a new set when they rot out.

Last edited by hatzie; 02-05-2017 at 05:59 AM.
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