radiator end cap plastic repair

[Max Wellhouse]

If you wanna get hitech, I'd use some biaxial kevlar seam tape and 
whatever epoxy resin system will withstand 240 degrees F.  Lacking 
that, Devcon makes a product that Wal mart sells called "Plastic 
Welder and sells for about $250 a syringe.  Make sure you get the 
stuff that has has a methyl-methacrolate base to it.  I'm not sure of 
the high end of the temperature compatability of the plastic weld, 
but maybe working that stuff down the actual crack and then clamping 
it would do initally, and then follow up with the kevlar tape and 
epoxy.  I can send you some of the kevlar seam tape if you can find a 
suitable epoxy and have a basic knowledge of how to prepare the 
surface for bonding.  Maybe PC 7 would work.  Biaxial kevlar will 
conform to almost any curved surface.

P mail me if you need more info.

DM&FS

At 08:30 PM 1/18/2007, THOMAS TAUSKEY wrote:

>The "Snowqueen" - 1993 100CS - has developed a 1 inch long thin 
>crack in the front/middle of the radiator left end cap.   It's easy 
>to get at and the thought occurs to me that a small patch-job 
>(essentially doubling the area around the crack) might hold if it 
>was made out of the right plastic and adhesive.  Sure there's 
>pressure behind it - but there is a relatively large (although 
>curved) surface area to which the patch could adhere.
>
>Any ideas as to what material the patch should be made out of (a 
>scrap piece from another radiator should work, no?)- and what 
>adhesive should be used (urethane based)?
>
>Thanks.
>
>tom tauskey
>'93 100CS auto (pearl white "Snowqueen")
>'94 S4 (garage queen)
>'89 2KTQ (hydraulic queen)
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