Timing, right or wrong

D

Distress_signal

Cadet
Joined
Mar 1, 2004
Messages
19
Have a 1987 90 HP VRO Crossflow, just recently had to readjust timing. Timing calls for 4 deg BTDC before Pick UP. Is this before Throtle pick up or before timer base movement. Also, the 3 ajustment points on this engine, could someone please Identify each and their use. Especilly the roller that connects the 2 linkages together. Last question for curiousity. What is the difference between 1987 115 HP and the 1987 90 HP. How can I gain the extra 25 hp??????????
 
H

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: Timing, right or wrong

Usually if the link and sync is okay, you don't have to sweat the pickup timing, just the full advanced timing. If the timing hasn't been changed, about the only time it's necessary to retime is if major work has been done, like the crankshaft replaced.<br /><br />c/6<br />Hooty
 
D

Distress_signal

Cadet
Joined
Mar 1, 2004
Messages
19
Re: Timing, right or wrong

Thanx Hooty, But you just about nailed what caused me to have to mess with the timing. Had to replace bearings and throtle linkages. And I am just not real sure how to reset the sinc on the linkages. Not really sure exactly what it does.<br /><br />Distress
 
H

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: Timing, right or wrong

Do you have the OMC manual or an aftermarket?<br /><br />c/6<br />Hooty
 
D

Distress_signal

Cadet
Joined
Mar 1, 2004
Messages
19
Re: Timing, right or wrong

Unfortunatly Hooty, I have neither. Have ordered one, just waiting for it to arrive. Was trying to get a jump on this timing thing sooner. I have a tourny this weekend, and am not sure if manual will be here before then.<br /><br />Distress
 
You must log in or register to reply here.
Top