heater core question

Bernie Benz b.benz at charter.net
Tue Sep 20 17:11:24 EDT 2005

Silicone caulk is the best and highest temp elastomeric sealent that you
could use.  It cures by absorbing moisture from the air and is so doing
gives off acetic acid, vinegar smell.  Should only last a few hours or maybe
longer is very thick.  Not to worry.

Did you check the blower brushes while you were in there?


> From: "Greg Watts" <kyle at sopris.net>
> Date: Tue, 20 Sep 2005 14:35:01 -0600
> To: <200q20v at audifans.com>
> Subject: heater core question
> Hello all. I replaced my heater core last weekend, used a 2x4 across the strut
> towers with coat hangers around each end of the box, per Chris Miller's site,
> the box was out in about 5 minutes. I did not need to drain the coolant,
> thankfully. Get a long Phillips screwdriver, wasn't too hard, took about 5
> hours. Anyway, I stupidly (I think) grabbed some rtv clear silicone sealant
> from my shelf and used it to seal the outlets thru the box. It has been three
> day's and I still smell silicone when the blower is on. I should have checked
> the temperature rating, because there was none on the tube. Any BTDT's on if
> the sealant will stop off gassing? I do not want to pull this thing just to
> reseal it with a high temp sealant. Ant help would be appreciated.
> Greg

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