Transmission Tunnel Insulation
Thread Starter
Intermediate
Joined: Nov 2005
Posts: 34
Likes: 0
Transmission Tunnel Insulation
How important is it to have the insulation in place? I took a look under my 73 and noticed that the old insulation it was lying on top of the trans in two rough pieces. Is this more to prevent heat from entering the cabin, or to protect the fiberglass body? Going to order a new one, but wanted to find out if its ok to drive till then. Thanks in advance.
Le Mans Master
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Originally Posted by Patrick73
They cost about $20.00 via vendors, but they are very effective.
Eddie
Melting Slicks
Joined: Feb 2003
Posts: 2,529
Likes: 27
From: Auburndale Florida
2025 C2 of the Year ('64-'66) Finalist - Unmodified
St. Jude Donor '03-'05-'06-'07-'09
There is also a semi circle looking foam collar that fits between the top of the bellhousing (of either a stick or auto car) and the transmissin tunnel. Acks like a gasket to keep the hot air out of the tunnel. Costs about $20 and it helps. Best of luck
Burning Brakes
Joined: Aug 2004
Posts: 856
Likes: 2
From: Tyler Texas
For the undercar transmission tunnel I used "zero clearance, cool and quiet". (www.coolandquiet.com) Geat product. It is much better than the OEM or vendor replacement item. I did not drop transmission to install. Measured, cut and then slipped/rotated into place. It has adhesive backing. I also used it on the two lower forward metal heat shields on firewall.
I also installed the OEM foam collar on the bellhousing as mentioned above. It is needed to keep heat out of cabin from engine compartment. All the vendors carry it.
I also installed the OEM foam collar on the bellhousing as mentioned above. It is needed to keep heat out of cabin from engine compartment. All the vendors carry it.
Last edited by Patrick73; Nov 3, 2006 at 08:56 AM.
Melting Slicks
Joined: Jul 2000
Posts: 2,848
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From: Beacon NY
I'm sure its all right, especially since engineers who know way more about cars than I do designed the Corvette to have this piece of insulation, but what about keeping the transmission cool? Wouldn't having this piece of insulation make it harder for the transmission to stay cool?
Granted it would obviously keep the interior of the car cooler, but from a purely performance standpoint wouldn't you be better off without the insulation?
By the way, I don't have it in my car.
Granted it would obviously keep the interior of the car cooler, but from a purely performance standpoint wouldn't you be better off without the insulation?
By the way, I don't have it in my car.
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Thread Starter
Intermediate
Joined: Nov 2005
Posts: 34
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I be ordering some isulation. Currently I actually welcome the heat since its getting cooler out ide and I have the heater core bypassed until I find time to replace it. (leaking) I just wanted to make sure there would be no damage to the fiberglass. Thanks guys.
Pro
Joined: Sep 2002
Posts: 541
Likes: 5
From: Epping NH
replace it
I installed both the collar and the tunnel insulation this year and the interior has never been more comfortable. Cheap fix, great results! BTW, I suspect mine was removed 30 years ago and all of the original clips for the trans tunnel were still in place.
Mark
Mark
