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Re: email sent to Bob Shaw

To: Max Heim <>, MG List <>
Subject: Re: email sent to Bob Shaw
From: Bob Shaw <>
Date: Fri, 11 Oct 2002 20:33:42 -0500
>>  Bob,
>>  I saw your post on the MG list.  You recommended a pertronix electronic
>>  ignition.  I have a 76 B with a Weber downdraft and a pertronix electronic
>>  ignition. I am having a problem with power.  I think it is timing related. I
>>  have static timed this car but I can not see the timing marks when I try to
>>  time it with a timinig light. My light has an adjustment so you can set the
>>  advance to as much as 60 degrees but I still don't see the timing marks. THe
>>  car seems to run good but no power.  It has a lucas 25D distributor and the
>>  vacuum advance is not working.  No vacuum from the weber anyway.
>>  I know with electronic ignition they say your timing worries are 
>>gone but does
>>  that mean I can't adjust it?
>>  What do you think?
>>  Mike Lewellen
>Max Heim
>'66 MGB GHN3L76149
>If you're near Mountain View, CA,
>it's the primer red one with chrome wires
There are a couple of things I would recommend to you. First, use 
white touch-up paint to highlight the notch in the harmonic balance 
(crank pulley) and and the timing marks on the front cover. Set the 
timing light to +34 and then time it at 3500 revs. It should read 0 
on the marks and if it doesnt adjust it to where it does. Kent 
Prather gave me this method and it has worked well for me. Hope you 
have as much success with it.

OBTW, don't worry about the vacuum advance. the weights in the 
distributor will give the necessary compensation for timing.
Bob Shaw
Check out Shaw's Garage at
My British Car is NOT leaky - it's merely marking its territory.

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