3M weatherstrip and engine pad

[newjerseydave]

a few weeks ago (after a recommendation here) I used the 3M weatherstrip product (black) to re-attach/re-seal the upper seam of the engine pad ('87 911). It bonded pretty well and was clean. Now that the temperatures in the East Coast are rising, I've noticed that after a 30+ ride (with proper engine temp), the 3M product gets tacky/sticky and the seal is lost.

Have others experienced the same? Any suggestions?

thanks, Dave

[TheSt|G]

Did you clean and prep the surface first? Are you saying that you just reglued the original pad?

[newjerseydave]

yes, cleaned and prepped. And yes, simply re-attaching the top as the pad is in good shape.

[timmy2]

I used the yellow stinky stuff from 3M and it has been fine for 3 years.


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[gptom]

What is the 3M part no. for the yellow?

Tom

[Bob Kontak]

I found a product at Summit Racing that works well. What I like about it is the spray nozzle makes the product come out like a spider's web. Really good for laminating stuff together as the coverage is uniform.

I have not tried it in high heat applications although it says high temperature. Might want to dig a little deeper if interested.

[javadog]

3M has good support, both on the web and over the phone. They make a zillion different adhesives. I'd call them and ask for the right product for the temperature range that you need.

JR

[Rodek]

My pad is in good shape although it's sagging a little at the rear of the engine bay. I too would like to learn which adhesive would work best at reattaching a pad that's in good shape.

[Buckeye]

Glue 3-4 small magnets to the pad and let the magnets do their work. I glued 20 magnets to the back of the pad four years ago and this is what it looks like today

It is much easer than glueing the pad on

[newjerseydave]

great idea and less mess. what about magnetic tape (with a sticky side)?

[javadog]

All that is fine, if the adhesive (the glue on the magnet, the glue on the tape, whatever) is rated for the temperatures you'll see.

That's why I suggested talking to 3M. They know the minimum and maximum temperatures on all their stuff...

JR

[timmy2]

I am not at home to check the 3M part number until 6 pacific time.

[Buckeye]

I have not tried the magnetic tape, I got the little round magnets and glue at Lowes. I live in Augusta ga, I have driven my car in numerous 100+ degree days. It has not failed in 4 years. I think part of the problem is that you are glueing the pad to a metal surface that is not 100% clean. I glued the magnets to the back of a new mat, which was new and clean

[timmy2]

It is 3M scotch grip rubber and gasket adhesive 847.
Holds like a Scot holds money...