Best heat shield?
 

I have Thermo-tec adhesive heat barrier completely covering my firewall and transmission tunnel, and dynomat extreme covering the inside with dynomat thermal foam on top of the dynomat extreme sound deadening material, but the heat coming through is still pretty ridiculous. My exhaust is wrapped all the way to the rear muffler.

Does anyone have some good heat insulation material suggestions to rivet onto the transmission tunnel and firewall? or some heat blanket to lay inside on top of the dynomat stuff?

The transmission tunnel is still warm to the touch while cruising on freeway--makes my right leg little uncomfortable which isn't the biggest deal... but my electronics are all inside and they are also being cooked constantly--my haltech ECU temperature regularly read over 120*F after about 40-60min of lean cruising.

wasn't a big problem in the winter, but now the heat is coming, the car's becoming an oven. any tried and true options would be much appreciated.

bump

where can I find those thick foam things that's behind the stock carpet? prefer not to do fiberglass inside of cabin.

Hi mate. I dont know if you have this type of product on the US market, but it is known as ACL heatshield (ACL website down, had to search ACL style heat shield) Platinum Heatshield Material HS1S - 700 x 290mm - Supercheap Auto
Its basically an aluminised steel and fibreglass sandwich that is extremely workable and stays in whatever shape you bend it. Very effective on exhausts and trans tunnels. I imagine you could use existing captive nuts or just use nutserts.

LSX guys use Lizard Skin products - search norotors

I got pretty much the same thing happening. Full exhaust wrap from manifold to muffler, trans tunnel shielding and even used some on my intake manifold and still, gets warm around the shifter area. Although I do know the rubber gromments are all torn up though.

Those foam things are exactly what it is foam for carpet/cushion. Go to any auto upholstery place.

Fiberglass eventually gets cooked and crispy.
I use the same fiberglass sticky that you are talking about, and replace them whenever I get into the areas they were installed. (Passenger frame rail, OEM shield near downpipe, and I made a lower intake shield). All of them get crispy and will flake or come off eventually.

The only thing that holds up are some sort of metal shield.
Inconel is the best material for heat, but pricey. I'm doing this next time those things come out, to the exhaust manifold, turbine, downpipe, wastegate.
You need barriers of air between your heat source and what you want to protect. i.e. downpipe airgap, shield, airgap, firewall.
That's how the OEMs do it.

For reference, I have all my exhaust components ceramic coated, with fiber glass exhaust wrap on the downpipe, and even all the way to the my mid muffler. Exhaust manifold is also fiberglass wrapped.
Turbo blanket (gets replaced everytime there is a need for it to come off because if you've ever used one they get crispyity crunchy and fall apart, cheap and name brand).
UIM/LIM and Elbow ceramic-chromed. LIM shielded.
You can work around the exhaust area with all this, but I still don't touch direct metal unless i have to, but without all this you wouldn't even put your hand around that area with the car running.
I don't recall exact numbers, but the infrared gun I have showed a considerable difference.

Funnily enough I am going through the same thing here with my 20b now! Do these babies run extra hot or something? I am only taking it easy running in as well. To be fair I noticed free we had some unusually hot days here in the UK 30degsC plus! My bonnet was practically too hot to touch as was the suspension turret. I have similar fibre glass backed reflector on most of the turret and chassis leg, wrapped manifold, downpipe wrapped to the midpipe and turbo blanket. I was actually paranoid that if I left the bonnet down something would melt or catch fire so I went a bought a fire extinguisher this week! I borrowed an infrared gun from work to check the temps if I get to drive it over the weekend. Wonder what I will see. I also noticed after I stop and leave the car a few minutes massive heat comes out through the compressor housing it starts to discolour the outlet eblow slightly where the vband clamp clips it on the the turbo outlet. I guess the steel clamp is acting like a heat soak pulling the heat through from the turbine and core as it's all wrapped it has nowhere else to go. Is there a point where wrapping is therefore a problem?