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RE: distributor shaft runout

To: "'Lumia, John'" <jlumia@ball.com>
Subject: RE: distributor shaft runout
From: "Jim Swarthout" <jswarth1@tampabay.rr.com>
Date: Mon, 30 Dec 2002 20:43:40 -0500
John,

Laterally, this is not an excessive amount of play! In operation the
distributor does not operate with a side load on the shaft, the shaft
floats. The best method is to "MIC" the shaft and then, using a
telescoping gauge, "MIC" the bushings. Using this method the variance
really should be no more than two thousandth's of an inch.

>From what you have described, I doubt it is.

For a test connect a dwell meter and rev the engine. If the meter
fluctuates when decelerating then the shaft is "walking". The dwell
should remain constant within a degree or so...

Jim Swarthout



-----Original Message-----

Jim, been out on vacation so havent read my emails lately.  I took the
entire distributor apart, so all I have is a housing with two dist shaft
bushings and a shaft with the cam block/advance mechanism in place. 
With the dist in a vise, I used a dial indicator to measure the
side-to-side play on one of the cam flats, which was 0.0035".  If I take
off the cam block and measure the shaft side-to-side play by itself I
get 0.0025".
John 

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