Trunk insulation
Thread Starter
Drifting
Joined: Nov 2017
Posts: 1,321
Likes: 569
From: Conway South Carolina
Trunk insulation
I've seen where some owners have added insulation in the trunk to alleviate the heat problem. They remove the back wall of the trunk and install the insulation between the engine compartment and the trunk. Does it work?
Drifting
Joined: Sep 2022
Posts: 1,310
Likes: 977
We were talking to another guy who added the stick-on heat shielding to the wall of his, facing the engine and says it helps.
I would imagine anything you do would help some, but I doubt it would ever make it a place to carry anything perishable.
Race Director
Joined: Aug 2016
Posts: 12,706
Likes: 10,132
From: Garden Valley CA
I put some reflective material on mine while I was changing the air filter. It may have helped but I didn't measure it. The main problem is heat soak. Even if it keeps it cooler when driving the trunk still gets hot when parked for a while after driving. When I go on road trips I remove things from the trunk as soon as I get to the hotel.
Moderator
Joined: Feb 2006
Posts: 38,952
Likes: 17,826
From: DFW Area TX
Just don't put anything heat sensitive in the trunk and added heat shielding is not necessary. Luggage kept in the trunk for hours long rides will get warm, but not hot. IMO, it is not an issue.
Instructor
Joined: Jan 2024
Posts: 236
Likes: 133
From: Florida
I read as much as was available at the time.
As mentioned opinions vary, but what I found:
1. Coupes are vented differently from HTC’s. Coupe trunks get warmer.
2. Center exhaust mods will cause the trunk to get warmer
3. Insulating material matters. Don’t cheap out.
4. All the trunks do get warm.
Racer
Joined: Dec 2025
Posts: 424
Likes: 389
From: Central Texas
Yes, it works. Material quality and coverage area matters. Here's what I did:
https://www.corvetteforum.com/forums...post1609537343
https://www.corvetteforum.com/forums...post1609537343
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Le Mans Master
Joined: Oct 2000
Posts: 6,476
Likes: 710
From: Sausalito CA
Does it work?
Some evidence (see youtube) say it does reduce trunk temps.
But by how much reduction varies.
Maybe 10 degrees?
And don't forget heat sink once parked.
I installed in my HTC, with special attention to the floor over the exhaust mufflers.
Some evidence (see youtube) say it does reduce trunk temps.
But by how much reduction varies.
Maybe 10 degrees?
And don't forget heat sink once parked.
I installed in my HTC, with special attention to the floor over the exhaust mufflers.
Le Mans Master
Joined: Jan 2002
Posts: 5,889
Likes: 1,197
From: Ft. Myers FL
I bought Truck heat insulation and I live in SW Florida where it's always hot it did drop the temps down 10 to 15 degrees. I still wouldn't put ics cream in there but it's better than it was. Just saying. 
