Hmm.. It sounds like I may have some worn distributor bearings. When
I set up the timing light, the line on the pully seems to jump around a
bit - fairly erraticly. Guess I'll get to it when I rebuild the
donor engine!
Dave Hall
72 MGB-GT
On Tue, 13 Aug 1996, Ed Taylor wrote:
> In trying to adjust the timing on my '79 B, the timing fluctuates somewhat.
> The timing advance springs are weak and are apparently the cause. I have
> checked the VB and Moss catalogs. VB doesn't even list the springs. Moss
> lists them, but doesn't show a price.
Timing drift (a.k.a. spark scatter) is not a result of weak distributor
springs. Weak springs manifest themselves as overly quick advance. Most
often, the cause of spark scatter is worn distributor bearings.
Unfortunately, the easy fix for this is to replace the distributor. It
may be possible to replace the bearings in the B dizzy; I don't know.
On the bright side, spark scatter will not strand you. It will cost you
power, mileage, and driveability, but it really can't get bad enough to
shut the car down cold.
Hope this helps-
Michael Chaffee
mchaffee@staff.uiuc.edu
I speak only for Diesel Fried Chicken Motorsports. CCSO frequently disagrees.
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