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George S. in the real NY
08-12-2003 21:55:34
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Re: Replacing Radiator Core, Not an easy Job, help in reply to Jon Z., 08-10-2003 09:17:16
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I did a radiator core replacement on my 720 awhile back and it goes pretty much as John T. explained. A word of warning which I learned when working on an unstyled A. DO NOT, DO NOT over tighten the two big bolts that come up from underneath the radiator. They are all that keep the radiator assy in place, so have the part that the lower tank and frame meet clean and smooth. Then put the bolts in GENTLY. This is because there is space between the bottom of the tank and the frame. If you keep on trying to tighten the bolts, you will pull the bottom radiator tank apart as it moves to meet the frame. Look before you take yours apart and you will see some exposed bolt, after the rust and dirt is removed. If the straps that go across the top and bottom to hold core to tank are shot, you can make new ones. I used slightly larger, not sure at the moment, which dimension, material. I think it was 1/4 in wider and maybe a 1/16 thicker. Anyway, remember to go easy on those big bolts. The rest is just work. The 720 ended up being a engine bore job, with new pistons, new valve seats and lots of clean and paint. Hopefully, I will have it ready to start Labor day weekend, after a year and 10 months out of service. Good luck, George S.
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