Hey Don . . . maybe when I get things put back together I will take you up on that formation flight on US 27 . . .

Thanks HiTork . . . you're thinking of the first design Edmunds manifolds. Those had a copper tube running through the casting that didn't hold up well. I think that the dis-similar metals copper/aluminum interacted causing the pipe to decay quickly (the perforations you mention under x-ray).

The manifold that I have is the 2nd design. It has a cast-in water jacket that fully encircles the carb throats and heats the core of the manifold. There are two 3/8 NPT threaded holes that function as inlet and outlet.

I know for a fact that mine doesn't leak - because I plugged one hole - filled the water jacket completely with acetone and then plugged the other. I left it sit for a few weeks to dissolve all the shelf crud that had built inside up from years of disuse. Didn't lose a drop.

regards,
stock49


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