timing setting 1980 omc 800 stringer 350 GM

jpainter

Recruit
Joined
Apr 10, 2005
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5
read all the posts and threads first. nothing definative

What do I set my timing on my boat below?

Seloc manual says 13 BTDC.

An OMC mechanic (good one) who worked on my boat a few years back said to set at 7 BTDC. I also read that the fuel today has alchohol in it and that is the reason you set at around 8 BTDC

Clymer manual also makes mention of this drastic difference in settings- this manual says set at 7 BTDC.
 
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