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Tips

I need a GOOD fitting trans tunnel

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rlich8

rlich8

Jedi Trainee
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The one in my car really fits like crap. It's a fiberglass one, but it doesn't fit well.

I just did some work setting up my overdrive and the thing is darn near impossible to get back on. I don't want to waste my time putting the seal back on. I want to buy a trans tunnel ready to go.

Any ideas?
 
What kind of Triumph do you have?

I've got a TR4 and recently installed one of the new polyurethane tunnels and I'm pretty happy with it.

You have to drill the bolt holes yourself and the sealing kit is a bit fiddly, but once it's on it "works" pretty well.

Good luck
 
Don't think he's talking the XKE and better not mention MG here ....so ,that leaves the 4. As Doug says , you should be fine unless you got it from somebody else.
 
Ah my bad! TR4A...tied with the Jag as my favorite. Did NOT have good luck with that MG...still gotta get around to putting a new head on and selling it.

I'll try one of the polyethelene ones from "the usuals"!
 
Just be aware that drilling the holes can be fiddly - make sure to fit / drill / secure and then drill and so forth... Maybe someone has a better set of instructions but the poly ones will change alignment when tightened, at least in my experience, so drilling all the holes without tightening didn't work very well.
 
Cover from TRF came drilled for the floor with marks around the arch a couple years ago.
 
Moss and related resellers typically aren't pre-drilled. If cost is closer the pre-drilled one would get my vote.
 
I don't know if TRF's is pre-drilled - that's where I ordered from. It was on sale for $65 plus $14 for the seal kit. I'm going to hand it to my carpenter and have him drill the holes and install the seals. I don't feel like fiddling with it.

Also, are you guys insulating yours? Should I use dynamat or some similar product?
 
I don't think I would use DynaMat. It's fine for acoustical damping but overpriced and probably not as efficient for thermal isolation. A lot of heat comes up through there and will grill your right leg like a mettwurst.

I used that foil-covered bubblewrap insulation you can buy at a home center. It's about 3/8" thick, easy to cut, and not too expensive. I glued it to the tunnel underside with 3M trim adhesive.
 
Perfect, I was hoping there was a Dyna Mat alternative. You're absolutely right - it is pricey, and I did know it was for sound but I think I remembered hearing someone using it for heat insulation.

At any rate, it didn't even occur to me to go to Home Depot - so thank you. I'm not trying to keep the interior like an icebox in 75 degree weather, just want to dampen the sound a bit and keep a bit of heat out.

I'm very excited to get my TR4A out... 8 weeks from purchase to ready-to-run is not bad!!
 
FWIW, I use the foil and felt type from Home Depot, but put it on top of the tunnel under the carpet. That way it doesn't get oil soaked (potential fire hazard), and I don't worry about it disrupting air flow under the car.
 
I found a good deal on the dynamat, but didn't think it actually worked that well for dampening the sound or the heat. So another downvote for dynamat.
 
Boy, somebody should inform Dynamat that their product sucks
 
DNK said:
Boy, somebody should inform Dynamat that their product sucks
Click to expand...

I wouldn't say it stinks Don, just that it is expensive and other products have moved on in capability and value. To be fair it is <span style="text-decoration: underline">not</span> designed to deal with heat.
 
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