RPMWFO
Parking Attendant
Posts: 8
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posted July 29, 2003 03:21 PM
Pipe Coatings Revisited- CF Can will it live?
I just got a Muzzy full SS system with a CF can. I like the sound and the looks of the pipe. Good performance and it comes with a cool idle...
Now onto my questions.
I know the subject of wrapping and coatings has been discussed in the past, but I didn't find answers to the some of my questions. First, let me say that I am a firm believer in the benefits of high temp coatings for exhaust components. I have used it in the past on car exhausts and had underhood temps reduced. I have also used it on Harley exhausts and had good reduction in outside pipe temps. This is the first time I have planned to coat a sportbike exhaust. I am concerned that the retained heat within the header and the mid pipe may destroy the carbon fiber can. Has anyone experienced this? I have read lately here about the the Muzzy CF cans potentially not handling increased heat output from the pipe well. I called Muzzy and spoke with someone from the tech department about coatings. The guy I spoke to said he wouldn't coat it because in their experience (more likely his opinion) coatings are a waste of time and only cost money and weigh more. He would not provide any further explanation and wouldn't comment on whether coating a SS system would increase the degradation of the CF can in operation.
I think coatings have benefit and would like to coat this system, but don't want to destroy the can. I think the coating may provided a minimal performance increase, but would reduce heat output and make the bike cooler to ride. Has anyone coated theirs? I can't believe that CF cans are so sensitive to heat. Can anybody with the Muzzy CF comment on the durability in normal use. I don't plan on top speed runs or continuous dyno use. I do plan to have it dyno tuned.
One other question. Can anyone recommend a shop in Colorado that can map my bike with the new pipe?
Thanks in advance.
  
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RPMWFO
Parking Attendant
Posts: 8
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posted July 31, 2003 08:15 AM
Anyone? No one has any experience with pipe coatings? How about a ruling by Mr. Doug Meyer?
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k bryant
Needs a job
Sponsor
Posts: 2911
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posted July 31, 2003 10:05 AM
Yes, lots. Just to keep this short. Though it reduces radiant heat externally, internal pipe temps increase. So it won't run "cooler" inside. The idea is similar to "header-wrap". Keep the temp up, so it continues expand and diffuse. That's not happy news to carbon fibre shells because it has less of a chance to cool before reaching the packing material/shell. HP increase is negligable on all but the most hotrodded motors. #1 selling feature is that the tubing does not discolor. That's why most people buy it. #2 is the outside temperture is reduced slightly (kinda like an invisiable heat shield). #3 is the "theory" of gaining power. Save your money. Buy a Ti or S.S. they look bitchin anyway when they discolor.
The car guys get reasonable gains (on the dyno) with it coated internally. But all are 400hp + race type motors. They don't have to worry about burning out mufflers, because many of the best mufflers are mechanical (Flowmaster, no glass). Also, the systems have much more volume and length and have more time to cool before reaching the muffler(s). A host of other reasons too, but I'll just stop there. We sell about 20% of our car headers with the "HPC/Embee" inner/outer coating process. We don't offer it on the motorcycle line. I just don't see the "performance" benefit.
There is nothing wrong with Carbon Fibre. But as has been posted before, it does require more attention/maintenance. Muzzy carbon is some of the best stuff.
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