[6pack] brake booster sealer

Glenn Rattmann k6na at cts.com
Mon Oct 12 12:43:07 MDT 2015


List,
Al Salvatore suggested using 3M strip caulk.  Once armed with that 
moniker it was easy to find reference to it on the 'net.  It is 
3M-08578.  You body-repair guys on here know all about it.  You can 
find it for sale on eBay and elsewhere for less money, but I wondered 
about old stock shelf-life issue, plus I needed it 'right now' in 
order to finish assembling the car for Triumphest.  So I bought a 
carton of it in stock at my local NAPA store.  Note, it was not 
available at local stores O'Reilly or AutoZone.

My result with it was excellent.  Thanks Al !

Colin and James-- Thanks for the inputs.  In my car at least, the 
four mounting holes in the firewall for the 3/8 studs are 
elongated.  They are not hacked-- It appears to be 
factory-intent.  The elongations extend outside the block-spacer 
line, so I was concerned that engine area fumes could ingress the 
firewall in those spots.  So I decided to seal the spacer and add a 
little extra to close the partially exposed holes.

--Glenn
74.5 X2, San Diego

At 11:48 AM 10/7/2015, you wrote:
>I don't use anything.
>
>Colin
>74-1/2
>
>
>----------
>Date: Tue, 6 Oct 2015 20:19:38 -0400
>From: alan salvatore <alansalvy at gmail.com>
>Subject: Re: [6pack] brake booster sealer
>
>I use 3M strip caulk.
>
>Al
>
>On Tue, Oct 6, 2015 at 12:22 PM, Glenn Rattmann via 6pack <
>6pack at autox.team.net> wrote:
>
> > I removed my original brake booster from my 74.5 and had it rebuilt.  The
> > factory had used a mostly-non-hardening material as a sealing gasket
> > between the spacer/firewall/booster.  The service manual doesn't specify
> > anything.
> >
> > What putty-like, rather non-hardening dark material is recommended?
> >
> > Thanks,
> > --Glenn 74.5
> >
>Date: Wed, 7 Oct 2015 10:42:23 -0700
>From: James_ <jattr6 at hotmail.com>
>Subject: Re: [6pack] brake booster sealer
>
>I recently was looking into the same thing. I did find some material 
>I believe is the same at my local auto store but I would have to buy 
>a huge roll. I ended up making a cork gasket instead.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/6pack/attachments/20151012/f2e1f7b1/attachment.html>


More information about the 6pack mailing list