View single post by John Finch
 Posted: 07-07-2007 08:01 pm
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John Finch

 

Joined: 08-01-2005
Location: Minneapolis MN
Posts: 122
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I've completed the installation of a Pertronix and MSD on 18309. Plugs are gapped at .35. Dellorto 45's spec 5. Starts and idles fine. I am getting minor backfire during over run. This is new. Per previous posts I see a timing recommendation of 12^.  Is that at 1000rpm? The illustration in the manual shows the front oil seal timing mark at TDC is 0^  and moving to the left or CC from the front of the engine, in 5^ increments to 20^. I am at approx 10^ at 1000rpm using the svc manual info. I'll adjust to 12^ and see if that helps. Fuel pressure is at 2.5psi at the rear Dellorto at 3000 rpm. Am I on the right track with adjusting the timing to 12^.  Any info will be appreciated.