OMC 2.3 Timing Belt Change

[bezerk1]

I just spent 45 minutes writing a tutorial about my 2.3 timing belt change and this new forum lost it on the last paragraph. I'm so mad I could punch a kitten. Here are the highlights. I'm done typing.

OMC 2.3 parts are readily available contrary to what some people think.

I used a Dayco Kit which was in stock.

It was not a marine belt and my boat did not explode into a ball of flames.

This job is very easy.

Mark the rotor position in the distributor.

Mark the rotor position in the distributor.

Check the mark to make sure the auxiliary shaft is not a tooth off. Mine was. It started right up and idled just fine. The timing light confirmed I was 20 degrees off.

Tear it down and adjust auxiliary shaft one tooth.

Reassemble and check the timing. The book calls for 10. I set mine at 12. The distributor is very sensitive to adjustment. This job takes an hour at the most.

Go boating.

And most important......If you have a question about this project don't hesitate to ask me for help. It's almost as easy a changing an alternator belt.

Cheers my OMC brethren.

 

[vortec4.3]

I was change the timing belt on my boats ,the job done like easy, after I done I check the cam shaft pulley aligns with the grid plastic ,and crank sprocket triangle aligns with notch on the crank case wall but when I install every thing I check camshaft pulley aligns with the grid, crank shaft pulley wont align with zero TC,IT show about 3 degree at BTC,AND I rework again but it the same can you tell me it the way like that or not

 

[bezerk1]

Your question is hard to understand but, I think I know what you are getting at. It sounds like you have either the crank or the cam a tooth off. Release the tensioner and reset the marks. Spin the crank two rotations with a ratchet to make sure everything is still lined up when under tension.

 

[vortec4.3]

on my engine after I set the crank and cam pulley line up with the mark ,I installs cover I check again ,the cam pulley line up center of three mark and the big crank pulley wrong line up with ZERO MARK IT shown 3 degrees off at btc.