Weld or Panel Adhesive?

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Snoots

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Instead of welding, has anyone used a flanging tool and panel adhesive for a patch panel?
 

Doppleganger

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Used 3M MANY times. Stuff is midevil and works awesome. IIRC it has a 35mph crash test rating.

FWIW....its what they use to build airplanes now. Found that a bead of this stuff and a row of rivets is 75x stronger than spot welds that create hot spots and microscopic tensile strength issues.

Its what I'm going to use to re-install my dash (adhesive/rivets).
 

Keith Seymore

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Me too. Cab corners and below the trim on one box side.

It's been 13 years and still looks brand new.

K

 

Randy and Easton

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Hey Y’all, just dropping in on this thread. Confirm for me what y’all are referring to is 3M panel adhesive #8115? Sounds like we need this for cab cowl to firewall. We think there might be a leak there.

Randy and E
 

Snoots

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Hey Y’all, just dropping in on this thread. Confirm for me what y’all are referring to is 3M panel adhesive #8115? Sounds like we need this for cab cowl to firewall. We think there might be a leak there.

Randy and E
Seam sealer is what you need there.
 

t44e6

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Also used the adhesive on the problem leak area on the cowl between the cab and firewall.
Were you getting a leak under the dash? I just ran into this problem.
 

AKguy

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Yes, after using the adhesive on my panels seemed like a good idea to apply it to the outside seams in liberal amounts and let it run downhill. Worked well.
 

Randy and Easton

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Well, we think we may have had a leak cowl to firewall in front of passengers seat behind glove box. That was before sandblasting and all the paint work we did. He used a very liberal amount of flex seal in cowl area. Fast forward 8 month later and he just washed it for the first time since paint and we found a small leak on passengers side side wall so we think that one is windshield but we did not have time to track I it down (its on the punch list. We plan on doing a leak test and check the cowl drains (never did that before) first, then move on to the windshield. Has brand new Precision self locking seal, so if it is still leaking on passengers side we will pull seal back and seal under the seal between window frame and seal.
Any ideas about what product to use there is appreciated. We used BASF NP 1 on the cab floor and bed seal lines and it worked great. All help appreciated

Randy and E
 

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Mjholly

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Any good automotive seam sealer will work u just have to find where it is comin in.i just went though this wth my 84 cleaned old caulk from firewall and cowl panel. Applied 3m seam sealer. Where the vent is on passenger side u have to stick your hand up and follow the seam down and seal it cause it will run down and sit under the heater core seam and and Eventually rot a hole in the seam. So I ran a bit of sealer inside the vent where the water comes down from the cowl. I would check the seam behind the heat box . Good luck
 

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