I was talking with my dad before about various carbon fiber things, such as a hood, muffler, etc. I really want to get the HKS carbon TI exhaust, but my dad was telling me tat he doesnt think that heat and carbon fibeer go together. He admits that he really doesnt know, but he thinks that under really high heat, that it would like separate or something, so i was just woindering if anything happens to carbon fiber when it is constantly under high temperatures. thanks

 

It depends on the resin used. Epoxy can "sent off" at different temps and even some polyester resins can take a great deal of heat. I am sure the CF used to cover mufflers have to be the right ones although if they are not they will get a little green tint to them. Not sure about HKS muffler though.


ROAD/RACE

http://www.roadracemotorsports.com/

 

The resin is all that matters, the CF itself is virtually immune to any temperatures your car would likely generate. Ok, don't build a CF engine block or head...

 

alright thanks a lot guys for your help

 

My Yamaha R6 has a carbon fiber exhaust canister from Micron. It has done well with 4000 miles on it so far. The sport bike community has been using carbon fiber on exhaust canisters for a while now. The HKS system should be fine.

 

the temp for an exhaust should go up to 200 degrees or so.. but it shouldnt ruin the carbon fiber.. although i am concerned it would slightly discolor it

 

To echo what a lot of folks have said, the actual carbon fiber should be fairly heat resistant. Resins very quite a bit in how much heat they can take. Do these exhausts use carbon tape or a weaved fabric? From what I work on, we try to keep composites away from areas where they will be forced to endure high temps. Both McDonnel-Douglas and Boeing have found that some of the carbon composites in the pylon fairings aft of the engine exhausts can be prone to delamination due to excessive heat. I image the exhaust coming out of a Pratt CF6-80 is probably warmer than the Evo’s exhaust. What I would be worried about is impact damage. Composites do not like sharp, localized impacts; things like rocks and road debris. The part could either fracture outright or become delaminated.

Best wishes,
f86sabre

 

dont forget that F1 teams have been using carbon fiber brakes for the last 20 years. you should not have any trouble with HKS.

 

aye the resin is the worry. but carbon fiber itself is basically fire proof. i was playing with a unressined piece. sorry for my misspelling. and held a lighter under it for a while. no physical damage. kind of cool

 

I have always heard that carbon fiber is an excellent insulator, that is why I doubt I will ever ditch my nice aluminum heatsink of a hood for a c/f one.