1931 898 spark control knob operation help

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03 Jul 2016 22:21 #31339 by curtiss
curtiss replied the topic: Re: 1931 898 spark control knob operation help
Brad, did you ever figure this out? I am in the same place trying to figure out what position I should time in. Do you push it in and leave the pull out at a retard or do you adjust it whole out and use it as the manual advance. The book says there is a manual advance and the pull switch is the only way I can think of having that work.

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04 Jul 2016 04:07 #31343 by mikespeed35
mikespeed35 replied the topic: Re: 1931 898 spark control knob operation help
Here is the info. from the A.E.A. Tune-Up Chart. "Stationary breaker contacts to open at 12 1/2 degrees (3 1/4 flywheel teeth) before top dead center for No. 1 cyl. Manual spark lever fully advanced" Manual advance is 7 1/2 distributor degrees. Automatic advance is 13 1/4 at 1300 distributor degrees. Remember distributor degrees and distributor RPM's are 1/2 engine RPM and degrees! Before doing all this make sure the points are synchronized. They are synchronized at 45 distributor degrees. Breaker gap .018 to .024. Dist. machine is best choice but syn. tool also work relatively well if done carefully. Good luck.
Cordially Mike

Mike Huffman

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