The Ford Barn - View Single Post - B Distributor in a Model A and How to set the timing perfect?

Bruce Adams · 05-04-2013, 10:03 PM

Have you experienced pinging at 5.5+ CR? The manual advance of the A allows for up to 40*...do guys running HC heads typically back off the spark lever?

I was advised by my HC head builder to NOT advance it all the way down and I CAN'T without what seems like pre-ignition but must be POST ignition, but I can do sixty with it halfway down so I just don't drop it to seven o'clock.

05-04-2013, 10:03 PM	#13
Bruce Adams Senior Member Join Date: May 2010 Location: Northport, NY Posts: 1,597	Re: B Distributor in a Model A and How to set the timing perfect? *Have you experienced pinging at 5.5+ CR? The manual advance of the A allows* for up to 40*...do guys running HC heads typically back off the spark lever? I was advised by my HC head builder to NOT advance it all the way down and I CAN'T without what seems like pre-ignition but must be POST ignition, but I can do sixty with it halfway down so I just don't drop it to seven o'clock.