Transmission tunnel heat shield (liner?)
#24
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Sorry to bump an old thread, but this is relevant!
Do folks apply that insulation under the carpet or under the car? I'm doing a clutch job soon and was wondering if there was something I could just stick between the transmission and the trans tunnel underneath the engine so I don't have to rip up carpets.
Do folks apply that insulation under the carpet or under the car? I'm doing a clutch job soon and was wondering if there was something I could just stick between the transmission and the trans tunnel underneath the engine so I don't have to rip up carpets.
#25
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Sorry to bump an old thread, but this is relevant!
Do folks apply that insulation under the carpet or under the car? I'm doing a clutch job soon and was wondering if there was something I could just stick between the transmission and the trans tunnel underneath the engine so I don't have to rip up carpets.
Do folks apply that insulation under the carpet or under the car? I'm doing a clutch job soon and was wondering if there was something I could just stick between the transmission and the trans tunnel underneath the engine so I don't have to rip up carpets.
#27
@Blackbird does some fancy stuff in the same location with a junkyard OEM heat shield from some other car mounted with an air gap.
#29
What you want is DEI heat shield. Super sticky and easy to work with, glue won't run. It helped me lower the temperature of the tranny tunnel. I've noticed it right after I bought a miata that the metal in that tunnel would heat up a lot and the whole car would start to get hot quickly. I'm in CA, so when added to high ambient temps - it was quite uncomfortable on long drives. 12x24 is just enough, but could use more for better effect. I've used 2' x 21" in the pic below.
#31
The Lowes/Frost King insulation really disappointed me with how non-stick it was. Even having cleaned the trans tunnel with brake clean, it had pretty poor adhesion. It also didnt make a night and day difference, but I didn't use it in the area under the dash. I wouldn't trust it outside the cabin, much less hanging upside down right next to the hot exhaust.
Focus more on keeping the heat off of the chassis in the first place by using a better insulation on the outside of the car.
Focus more on keeping the heat off of the chassis in the first place by using a better insulation on the outside of the car.
#32
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12 inches wide and 15 feet long for under $20, lasts for years and works really well. What else do you need?
I also recommend getting heat shielding around the pipe itself just like it comes from the factory. It is necessary to keep the heat out of the transmission at stock power levels. It is twice as important at twice the stock power levels because you are theoretically putting twice as much heat in the exhaust. Protect your fuel tank bottom and your rear diff from the exhaust heat as well. I boiled the fuel in the tank without a shield. Pickup trucks and big SUVs in the junkyard will often have metal shielding that will fit over a 3" exhaust pipe.
I also recommend getting heat shielding around the pipe itself just like it comes from the factory. It is necessary to keep the heat out of the transmission at stock power levels. It is twice as important at twice the stock power levels because you are theoretically putting twice as much heat in the exhaust. Protect your fuel tank bottom and your rear diff from the exhaust heat as well. I boiled the fuel in the tank without a shield. Pickup trucks and big SUVs in the junkyard will often have metal shielding that will fit over a 3" exhaust pipe.
#33
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I also use that stuff on my car. Along with cleaning with brake cleaner I also got some 3m spray glue and spray up before I put in the foam stuff. It has helped hold it all up. But yes that stuff made a huge difference in temps in the trans tunnel.
#35
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What you want is DEI heat shield. Super sticky and easy to work with, glue won't run. It helped me lower the temperature of the tranny tunnel. I've noticed it right after I bought a miata that the metal in that tunnel would heat up a lot and the whole car would start to get hot quickly. I'm in CA, so when added to high ambient temps - it was quite uncomfortable on long drives. 12x24 is just enough, but could use more for better effect. I've used 2' x 21" in the pic below.
#36
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Was going to get the stuff six recommended for when the clutch is installed in the next week or so. Couldn't find the frost king stuff in any of my searches. Turns out it's entered by a different name now.
Here's a link to it at home depot: E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 - The Home Depot
Here's a link to it at home depot: E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 - The Home Depot
#37
The ThermoTec 2000F Heat Barrier adhesive back sheets are really sticky and meant for this. But it still can lose it's grab if the tunnel is not rediculously clean and smooth. Good luck. I found adding some rivets with flat washers in critical areas stopped the poorly adhered areas to stay inplace and not unstick any further. Maybe something like that would be good for that home dipshit crap some of you guys are "playing with fire" with ;]
#38
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Was going to get the stuff six recommended for when the clutch is installed in the next week or so. Couldn't find the frost king stuff in any of my searches. Turns out it's entered by a different name now.
Here's a link to it at home depot: E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 - The Home Depot
Here's a link to it at home depot: E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation-FV516 - The Home Depot
The other option that Savington now swears by is this product. I have purchased it, but yet to get it installed in my car to see how well it works.
#39
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The ThermoTec 2000F Heat Barrier adhesive back sheets are really sticky and meant for this. But it still can lose it's grab if the tunnel is not rediculously clean and smooth. Good luck. I found adding some rivets with flat washers in critical areas stopped the poorly adhered areas to stay inplace and not unstick any further. Maybe something like that would be good for that home dipshit crap some of you guys are "playing with fire" with ;]
id you need? It's on amazon prime so I could have that here without changing out of my PJ's. Sounds like a win to me, esp if it's rated for a higher temp.
That is the correct stuff. Just make sure to buy some 3M adhesive spray when at home depot racing and use that in the trans tunnel before you put in the insulation.
The other option that Savington now swears by is this product. I have purchased it, but yet to get it installed in my car to see how well it works.
The other option that Savington now swears by is this product. I have purchased it, but yet to get it installed in my car to see how well it works.
Last edited by ridethecliche; 05-24-2017 at 10:49 AM.