Mercruiser 5.0 50 degrees at idle

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,953
The valve cover look gets close. Valves close and the mark on damper will be about 180* away. I say about because there is cam lobe variations. With all spark plugs out rotate crank by hand and have a wire or something in number 1 cylinder. Slowly crank it up till the wire is not pushed out any further, this should be close
Ayuh,..... And both valves are closed,....
 

Rap1404

Cadet
Joined
Jul 2, 2022
Messages
10
The valve cover look gets close. Valves close and the mark on damper will be about 180* away. I say about because there is cam lobe variations. With all spark plugs out rotate crank by hand and have a wire or something in number 1 cylinder. Slowly crank it up till the wire is not pushed out any further, this should be close
Im ordering a piston stopper and a new balancer, going to replace it, make sure i have tdc and check back in with you guys.

Thank you!
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,054
Not being flipped just making sure. Do you know how to use the stop bolt?
 

Rap1404

Cadet
Joined
Jul 2, 2022
Messages
10
Not being flipped just making sure. Do you know how to use the stop bolt?
Is this correct?
Bring #1 to the compression stroke, screw the stop in and move by hand until it stops, mark it. Turn it counter clockwise until it stops, mark it. TDC should be between those two marks?
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,054
Is this correct?
Bring #1 to the compression stroke, screw the stop in and move by hand until it stops, mark it. Turn it counter clockwise until it stops, mark it. TDC should be between those two marks?
Yes, correct
 
Top