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Ken911 Ken911 is offline
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Join Date: May 2005
Location: Loxahatchee, florida
Posts: 2,691
Quote:
Originally Posted by JFairman View Post
Without seeing it I can't say if your's can be repaired or not.
My rear condensor had a crack in the copper tube right next to the o-ring fitting where the high pressure line from the compressor screwed on when I got the car.

Looked like it was just bent then cracked as if someone tightened the line on without putting an open end wrench on the the other side to support it.
I brazed the crack up with brass rod to seal it and make it stronger and it has been fine since.
You have to be real careful to not overheat the copper tube more than when it just turns red hot for the brazing rod to melt onto it because the copper will melt and if it does and then it's toast.
You could clean the copper tube real good and silver solder it but thats not as strong.

The best condensor you can get is probably the Griffiths serpentine replacement if you're switching to R134.
It's like $500 or more though.

I would look for a used one if I needed one especially if using R12.

Put a 10" fan on the bottom of the condensor wired in parallel with the compressor. That will help make cold AC more than anything.
If you are going to silver braze it it is a very stong joint. however it's important that you use flux and clean it well. For silver brazing though you use borax for flux. And yuo have to use map gas or acetylene , propane isnt hot enough. The correct way of getting the right temperature which is critical for a good joint is to heat it until the borax melts. that is the correct temp for the braze. any more is too hot and will burn it out of the joint. too little and you wont have correct penetration. Just wash it into the crack then build a little on top for extra strength.
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Old 07-16-2010, 12:38 PM
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