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Brentwood Bob · 08-11-2020, 11:11 PM

You have a 2piece shaft. When I fit a different distributor and made sure the distributor was seated in the head I tightenened the retaining screw on the side of the head to secured the distributor. I created a rapid noise at speed.
I took out the new replacement lower distributor shaft, and filed it and fit it so there was clearance when I replaced the distributor and snugged the retaining set screw on the head.
So when I test drove the car, no more rapid knock at speed.
I think when I replaced the first distributor, and replaced the lower shaft the new shaft had to be fit to the engine I have. Worked for me. Just raising the distributor a scootch would probably not be that effective.
But it is hard to second guess your situation.

08-11-2020, 11:11 PM	#7
Brentwood Bob Senior Member Join Date: May 2010 Location: brentwood, ca Posts: 4,247	Re: Knock/rattle/tap at freewheel speed You have a 2piece shaft. When I fit a different distributor and made sure the distributor was seated in the head I tightenened the retaining screw on the side of the head to secured the distributor. I created a rapid noise at speed. I took out the new replacement lower distributor shaft, and filed it and fit it so there was clearance when I replaced the distributor and snugged the retaining set screw on the head. So when I test drove the car, no more rapid knock at speed. I think when I replaced the first distributor, and replaced the lower shaft the new shaft had to be fit to the engine I have. Worked for me. Just raising the distributor a scootch would probably not be that effective. But it is hard to second guess your situation. Last edited by Brentwood Bob; 08-12-2020 at 11:24 AM.