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Mike V. Florida · 06-09-2014, 11:50 PM

Bushings not reamed in the center.

Received this PM

Hi Mike,
The bushing is fixed so if it were off center, it would not impact the varying gap as the center of the shaft stays at center of reamed bushing.

I have seen the cam machining on new distributor shafts be off (concentric)as much as .004" which translates into .008" when spun 360 degrees. Given some old cams were also off, it is possible the two are adding...but the amount he is observing seems over the top of possibility.

Good Day Mike!

Dave Gerold

06-09-2014, 11:50 PM	#2
Mike V. Florida Senior Member Join Date: May 2010 Location: Florida between Sarasota and TampaSouth Florida Posts: 14,054	Re: uneven point gap as dist is rotated Bushings not reamed in the center. Received this PM Hi Mike, The bushing is fixed so if it were off center, it would not impact the varying gap as the center of the shaft stays at center of reamed bushing. I have seen the cam machining on new distributor shafts be off (concentric)as much as .004" which translates into .008" when spun 360 degrees. Given some old cams were also off, it is possible the two are adding...but the amount he is observing seems over the top of possibility. Good Day Mike! Dave Gerold __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II Last edited by Mike V. Florida; 06-11-2014 at 04:00 AM.