Is thermal insulation recommended for aftermarket catback exhaust? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Kurtz · 06-30-2014, 09:10 PM

My BRZ is the first car to which I’ve considered adding an aftermarket exhaust system (just a cat-back for now). Based on the photos in a number of installation threads, I am a little concerned about the heat effects of reducing the air gap between the exhaust pipe and the walls of the transmission tunnel and components adjacent to the exhaust.

Would adding some thermal insulation, at least for the first few feet downstream from the catalytic converter be recommended?

Is there a particular type of insulation that would be recommended for this application? An example of what I was considering is something like this: http://www.heatshieldproducts.com/au...rs/lava-shield

boredom.is.me · 06-30-2014, 09:37 PM

Not a single bit necessary IMO.

car_roll · 06-30-2014, 11:33 PM

^ This. You shouldn't have a problem at all

industrial · 07-01-2014, 08:18 AM

Anywhere the factory exhaust has a heat shield, you should also make provisions to manage heat. On this car the header and overripe are probably the most important areas. I like themotec turbo heat wrap and dei titanium heat wrap for products.

grodenglaive · 07-01-2014, 04:19 PM

heat shields if you must, but don't wrap the pipes.
http://www.centuryperformance.com/ex...o-not-use.html

Kurtz · 07-01-2014, 07:10 PM

Thanks all for the feedback. For the time being I am leaving the factory heat shrouded components alone. If I ever swap things in the under hood exhaust I've seen a few threads discussing heat issues there that I can refer to.

kodyo · 07-01-2014, 07:33 PM

Anyone tried reusing the OEM heat shielding? I haven't replaced the header yet (Ft86SF header on order and you know the wait times on those), but thinking of trying to reuse if it's at all possible.

Reaper · 07-01-2014, 07:35 PM

overpipe and header is the only thing that needs heat management products.

06-30-2014, 09:10 PM	#1
Kurtz Junior Member Join Date: Jun 2014 Drives: Subaru BRZ Location: North Carolina, USA Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Is thermal insulation recommended for aftermarket catback exhaust? My BRZ is the first car to which I’ve considered adding an aftermarket exhaust system (just a cat-back for now). Based on the photos in a number of installation threads, I am a little concerned about the heat effects of reducing the air gap between the exhaust pipe and the walls of the transmission tunnel and components adjacent to the exhaust. Would adding some thermal insulation, at least for the first few feet downstream from the catalytic converter be recommended? Is there a particular type of insulation that would be recommended for this application? An example of what I was considering is something like this: http://www.heatshieldproducts.com/au...rs/lava-shield

06-30-2014, 11:33 PM	#3
car_roll Senior Member Join Date: Oct 2013 Drives: Nuisance BRZ Location: Cali Posts: 150 Thanks: 9 Thanked 28 Times in 20 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	^ This. You shouldn't have a problem at all __________________ #teamnuisance I do like, YouTube or something, IDK. Shameless Plug

07-01-2014, 07:35 PM	#8
Reaper in orbe terrum non visi Join Date: Jan 2014 Drives: violent Location: Mountains Posts: 1,747 Thanks: 279 Thanked 762 Times in 446 Posts Mentioned: 62 Post(s) Tagged: 1 Thread(s)	overpipe and header is the only thing that needs heat management products. __________________ I have E85 where there isn't E85, that's my secret. http://www.ft86club.com/forums/showt...t=reaper+build

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07-01-2014, 08:18 AM	#4
industrial Add lightness! Join Date: Apr 2012 Drives: 17' WRX Location: Boston Posts: 1,253 Thanks: 380 Thanked 888 Times in 411 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	Anywhere the factory exhaust has a heat shield, you should also make provisions to manage heat. On this car the header and overripe are probably the most important areas. I like themotec turbo heat wrap and dei titanium heat wrap for products.

07-01-2014, 07:10 PM	#6
Kurtz Junior Member Join Date: Jun 2014 Drives: Subaru BRZ Location: North Carolina, USA Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thanks all for the feedback. For the time being I am leaving the factory heat shrouded components alone. If I ever swap things in the under hood exhaust I've seen a few threads discussing heat issues there that I can refer to.

07-01-2014, 07:33 PM	#7
kodyo Senior Member Join Date: Jan 2013 Drives: Scion FR-S Location: Los Angeles Posts: 686 Thanks: 597 Thanked 257 Times in 174 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Anyone tried reusing the OEM heat shielding? I haven't replaced the header yet (Ft86SF header on order and you know the wait times on those), but thinking of trying to reuse if it's at all possible.

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