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Old 01-07-2011, 06:45 PM   #15
dave in australia
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Join Date: May 2010
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Default Re: Thread size on the distributor shaft to tighten the cam screw?

Quote:
Originally Posted by Terry, NJ View Post
That sounds suspiciously like 8 mm X 1.25 25 mms per inch = .040 x 8= .320 (plus .005 for the oversize ground on all taps) = .325 X 1.25.
Who knows what mysteries lurked in the mind of Henry Ford? Anybody who would use #12 X 24s has to be a little nuts.
Terry
It's not 8x1.25, I have one of those taps and it didn't even go in half a turn. Plus I think you've gone the wrong way with your thread calculation. Thirty tpi or .0333" per thread pitch is .83mm, ie .0333" divide by .040"(1mm). So it's not metric.
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