confused
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Road Warrior
Joined: Mar 2014
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From: nowhere
confused
I recently purchased a 1976 shovelhead motor that had been rebuilt and sat for 25 years. Of course , I tore it apart. I found that it a new Andrews Letter A grind cam in it. The cam has a dot on it and the pinion gear has a line on it. They appear to one tooth off. Let me further explain, Dots align with lines, Teeth
align with valleys. I can time this as one tooth advanced or one tooth retarded. Early 76 motor and a later cam?
align with valleys. I can time this as one tooth advanced or one tooth retarded. Early 76 motor and a later cam?
Cruiser
Joined: Sep 2020
Posts: 222
Likes: 77
From: Gulf Breeze
What is your white arrow pointing at? Looks like there is a line about 1630 on the gear, seems like the arrow would point this out... just wondering.
Club Member
Joined: Mar 2009
Posts: 66,094
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From: Niles Canyon Ca.
He's pointing at the little machined groove on the gear face. There's a different gear tooth pitch and the groove denotes its later one, have to match things or the case case gets very noisy and tends to chew things up.
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Club Member
Joined: Mar 2009
Posts: 66,094
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From: Niles Canyon Ca.
Well bud you can't see it they ain't gonna be any explaining it then. And the hash marks you see on the gear teeth are the timing marks for the pinion and the breather gear. This ain't the f**king military use standard clock time like 2 o clock and 4 o clock.