4.3 Engine coupler issue?

[Rick Stephens]

Looks golden. The splines show wear by getting 'pointy' teeth as the slots wear wider. Your's look good.

 

[Searay205]

Exceptional catch!!! I probably would have installed check alignment and called it good not doing the double check of rotating the engine!!!

 

[AMMO DAWG]

Thanks all, I'll be sure to update with a happy ending hopefully if this rain ever gives us a break!

 

[AMMO DAWG]

Looks golden. The splines show wear by getting 'pointy' teeth as the slots wear wider. Your's look good.

Thanks Rick, just needed that little nudge!

 

[tank1949]

Finally got my 2004 Mercruiser 4.3 back in the boat after getting a front timing cover leak resolved and as I was aligning the engine I noticed if I aligned it and rotated the engine it would be way out of alignment. After messing with it for hours I put a 1" pipe in the coupler and cranked it over (see attached). Seems the coupler might be bent or crooked, have you ever seen an issue with a coupler like this? The engine was just rebuilt, had put it in and it leaked at the timing cover so I pulled it again, bought an OEM cover and new oil pan gasket and put it back in. I'm hoping I can just lift the engine and move it forward to get to the bellhousing and coupler versus pulling the engine. Any suggestions on checking the coupler after I pull it, thanks in advance.

Try Michigan Morterz for coupler. Pretty reasonable at 190 bucks plus shipping.

 

[Scott06]

Is it possible one of the rubber insulators that goes between the coupler and flywheel got knocked off during assembly ? Might be worth popping off flywheel cover before buying a new one

 

[AMMO DAWG]

Try Michigan Morterz for coupler. Pretty reasonable at 190 bucks plus shipping.

This is the one I use, a bit pricey

 

[tank1949]

This is the one I use, a bit pricey

looks like they more than doubled in price. Good luck!