Both of my heater cores have a single rib stamped into the caps. It looks like it would be hard to solder a "X" to the cap, the center of the "X" would be right over the rib in the cap. Is this an "improved" set of cores or am I taking Robert's reinforcement instructions too literally?
Then Jay mentions that it would be hard to weld strips over the existing "X". three different core configurations?
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From: Rex Funk[SMTP:rexfunk(at)wizzards.net]
Sent: Wednesday, September 23, 1998 9:08 PM
To: alpines(at)autox.team.net
Subject: Re: Heater core
Robert J.Jaarsma wrote:
>I had the same problem once, worse the side gave up and cracked. It is
>usually caused by running with a higher pressure radiator(coolant cap).
>I had mine reinforced on the outside on both sides by a radiator shop.
>A "X" from corner to corner on either side will do the trick. Doesn't
>cost much and no more worries.
The heater core ends are the weakest part of the cooling system...
...it's smart to reinforce the heater core ends.
Rex Funk
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From: Jay Laifman[SMTP:Jay_Laifman(at)countrywide.com]
Sent: Thursday, September 24, 1998 8:57 AM
To: tigers(at)autox.team.net; alpines(at)autox.team.net
Subject: Pressure caps and heater cores
... too much pressure in the system caused
the sides to bow out and that the sides had to be pushed back in to get it
out. One even reported a heater core that blew up during pressure testing.
One suggested that once the core was out, and the sides flattened back to
their normal position, have two strong metal strips welded on each side. I
am not sure what they did about welding around the factory's structural
"X"s already built in.
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