2001 3liter mercruiser timing

Holy doo daa

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Jul 12, 2020
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3
Hi new here. Working on a 2001 3 liter and wondering why theres 3 timing settings: 1btdc, 1atdc, and 2atdc in base time?
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Timing depends on the engine serial number.

Chris......

3ltiming.JPG
 

Holy doo daa

Recruit
Joined
Jul 12, 2020
Messages
3
The tag on the flame arrestor for serial num. was blank( not visible) the specs tag said 1deg.atdc. Is there another location for number incase arrestor was swapped out?
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Aluminium tag on the block near the starter motor...
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Got it 0M039478

:thumb: Now that you have it, record it somewhere safe, and post it whenever you start a new thread here. :)

Or do what a lot of us do, make it part of your post signature, so it's always there. It's about the most important piece of information about your engine that you can provide... And we're going to ask for it every time. :D

Chris....
 
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