Alfieg23

I recently had to repair my rear bumper due to the heat from my exhaust tips melting the top of the bumper exhaust opening. Someone told me they saw another 996 with some type of metal protection covering the bumper openings. I have been unable to find anything similar to this. If anyone knows where I can source these, I will greatly appreciate it. Thanks.

GH996

wildbilly32

If you have a C4S you should have them. On parts diagrams it doesn't appear that the C2 has them.

Auto Atlanta has them for the C4S

C4S rear bumper #6, #7, #8

GH996

dkraige

2nd this, I've tracked my car with both stock and aftermarket mufflers, both with stock tips, and no issues with heat against the bumper. I have new motor mounts, so the tips are as close to the bumper as they're ever going to be.

dan_189

Factory manual references a minimum of 20mm between the tips and the bumper.

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Always wanted 1

lowpue

If you keep them shiny they will not get bumper as hot. If you make them flat black they will heat up bumper due to blackbody emissivity increasing radiation from tip....Sounds crazy but its true. What color are your tips!

pmkazz

Happened to me with those real pretty Fabspeed tips, which are not doubled walled like OEM...

Debo18D

Me too.

How did you fix it? I have an idea in mind that doesn't involve replacement bumper cover and painting (although I have the capability for that in the shop). What did you do to sort it out?


D.

lowpue

I am going to geek out more....Double wall is effectively a heat shield that substantially drops the temperature due to the fact that its the difference of temperature to the 4th power. :-)

shmelvin

Sounds like a little lesson in Stefan–Boltzmann law to me? Thanks professor

pmkazz

Right on Lowpue. One reason I am not overly impressed with "their stuff". My fault for not listening to my intuition.

lowpue

LOL

Alfieg23

Thanks all for your comments and help. I installed an aftermarket exhaust and exhaust tips. I will look into the C4S parts. Thanks again.