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MG MGB Technical - Glue to stick soundproofing under hood/bonnet?

Dear all,

Thanks for your words about my overheating problem - I'm fitting a re-cored radiator at the weekend & hopefully it will get me to Silverstone... and back...

NEXT...

My '64 MGB retains the original under hood/bonnet soundproofing/insulation. The back part is not in good condition but I am going to repair it using using similar materials from under the battery compartment carpet/cover of an MGB and MGB GT. The horsehair type material seems the same and the black plastic material should look OK.

Modern replacements are MUCH thinner and don't look much like the original.

So what do think is the best glue to keep the soundproofing/insulation stuck to the hood/bonnet, because the factory stuff didn't last 45 years!

Thanks,
John.
John Prewer

3M makes several automotive spray adhesives, general and permanent. The general sticks things really well. But since the adhesive will be in tension, try the more permanent spray. Any auto supply store should carry something similar.

warmmly,
dave
Dave Braun

John

I have only ever used 3M HEAVY DUTY CARPET SPRAY GLUE. You should be able to pick up an aerosol can at any B&Q in the carpet department I would have thought.

Tips:
Spray both the hood/bonnet AND the back of the mat copiously - might want to not spray too close to the edges on the car, but the mat (if sprayed on a couple of layers of newspaper you can go right to the edges).
Allow both to become TACKY DRY before offering up the material to the hood.
If you are leaving the hood on the car while you do this (I always have) then before you start, get a couple of pieces of wood that you can use to prop the hood up with and some more that can go across the piece of mat top, middle and bottom, and you can hold these in place with some other longer bits that just go either side of the engine and onto the ground.
Do one piece at a time and start with the bit at the FRONT of the car - that way you can cut your vertical pieces of wood down when you move onto the back.

Good luck

Paul
when you have finished spraying the hood
Paul Barrow

I used the 3M spray adhesive to attach my hood liner back around summer '06. Not even a corner has come loose in 3 years. And I followed Barrow's steps above.
R.W Anderson

3M *heavy duty* trim adhesive :)
Samuel Sullivan

I've never found these so-called heavy duty adhesives work very well, they appear to initially stick OK but when the engine gets hot the soundproofing peels away.

After several attempts I finally managed to get mine to stick using a high-temperature oven sealant brought from a local iron mongers.
Mike

Mike,

You have just GOT to give more details!

Just what is this magic stuff? Make? Name?

If it works I want to use it, the soundproofing has fellen off my hood/bonnet at least half a dozen times & this time I want it to STICK!

Thanks,
John
(really Yorks, UK)
JW Prewer

I was afraid someone was going to ask that John! To be honest I threw the tude away some time ago, and I can't recall what it was called. It came in one of those tubes you use in a trigger sealant gun and that it was redish/orange colour.

Installing bonnet felt is a job I want to do on my present B so I'll make a note to get down to the same hardware store over the next couple of days. Hopefully they'll still sell the same stuff.

Mike
Mike

Here's the stuff John, it's a product called HT30 made by BondIt. If cost me £7.50 from a local ironmonger store.

http://www.bond-it.co.uk/productDetails.php?prodId=1307
Mike

http://www.dap.com/product_details.aspx?BrandID=50&SubcatID=9
RK Muenchausen

Bob, I don't think that brand is available overhere.

John, I used Evo Stick in the red packaging and plenty of it. It has lasted 10 years or more with no droop. Because of the large area and the absorbance of the pads you will need alot of it.
David Witham

I tired using Evo Stick and aside from being expensive it didn't seem to hold that well on my daily driver. My other concern was that this stuff is also highly flammable even when fully set, not something you want when it falls onto a hot manifold and carbs.

One tube of HT30 is enough to do the job well and is safe up to 285 Centigrade.
Mike

David,

I never had any luck with Evo Stick. My Father used to stick everything with it but I can't recall anything staying stuck!

Mike,

Thanks, the hunt is on!

John.
(Yes, Yorkshire, not Middx...)
JW Prewer

Argh, the difference in what products are available in different countries is annoying sometimes. I need to do this job soon since the bonnet is off the car at the moment being filled and sanded and I figure it will be a hell of a lot easier to glue the stuff on with the bonnet flat upside down on a panel stand! I'll have to find something available locally that will do the trick.

Simon
Simon Jansen

I just ordered a kit for my car. In case it helps anyone local I was told Ados F3 will work for gluing it in place.

Simon
Simon Jansen

Simon, the Ados F2 I tried on mine didn't work...perhaps the F3 will do better? Otherwise, you can always check the MDS for the above products and HOPEFULLY find a local equivalent to what the overseas guys are using. I'll let you be the guinea pig, since my F2 experiment :)

BTW, I used the thick rubbery backed felt from Paul Walbran. It's quite heavy, so needs a heavy duty glue, methinks.
Curtis Walker

Hi Curtis, the F3 is meant to be a lot stronger than F2 (which I have never had much luck with either to tell the truth).

My pads are coming up from Neville Lucas in Tauranga. Not exactly sure what type they are yet! But that's what he recommended I use as glue. Will let you know how I go. Am still filling and sanding the other side of the bonnet at the moment!

Simon
Simon Jansen

Ah, they arrived. They are the ones with jute (I guess?) on one side and a rubber pad on the other. They are quite light.
Simon Jansen

They sound like the ones I've got in my shed waiting to be glued on again....by jute I'm assuming you mean the coconut-fibre-looking stuff? I'll check out the F3 AFTER you've had success :)
Curtis Walker

This thread was discussed between 01/07/2009 and 15/07/2009

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