90HP Flywheel question, part # doesn't jive

[anesthes]

Hi,

I just picked up another boat, with a '91 Force 90hp. The model # on the engine plate is 906x9H.

The flywheel has two magnets that have detached, the glue failed. The number on the flywheel is CC2146.

When I search ebay, etc, for this part number it appears to be for a 50 or 70 HP force outboard.

When I went to boats.com and looked up the flywheel for this engine (H0906x9H), the part number is 817494A2.


So Now I'm confused. Could someone offer me any guidance? I'm not an expert with Force. I'm tempted to sand and re-glue
the magnets on this flywheel, but if they come apart at high RPM I don't want them destroying the stator.


Thanks!

-- Joe

 

[bentle]

Re: 90HP Flywheel question, part # doesn't jive

It is possible the flywheel came off a different motor. Happens alot, probably not a big deal though. I would however trust what your finding on boats.net though. The part they have should be the correct one for your motor, and if it were me that's the way I would go.

 

[anesthes]

Re: 90HP Flywheel question, part # doesn't jive

Thanks for the reply.

I'm just trying to find out if perhaps the # (CC2146) cast into my flywheel is original, and the 817494A2 is a newer number.

You guys ever see the magnets come off?

I'm still tempted to glue/epoxy them back on, but I'm curious if this is the correct flywheel.

Boat is a '91 Bayliner capri. Needs work, but for the money I couldn't pass it up.

-- Joe

 

[jerryjerry05]

Re: 90HP Flywheel question, part # doesn't jive

Pics of the flywheel and stator.J

 

[Frank Acampora]

Re: 90HP Flywheel question, part # doesn't jive

That's a Mercury flywheel and ignition. Merc DID use the same flywheel and stator mount assembly for the 2 cylinder 40-50 AND 3 cylinder 70. The stator mount was positioned differently for 2 and 3 cylinder engines. Forward direction is cast into the mount for each engine. Youirs should show this too.

Since the 90 is also a 3 cylinder engine, I suspect that the flywheel is correct for it also.

Yes, the magnets do occasionally come off. Gluing them back with epoxy should fix the flywheel. Just be aware that there is little clearance between the magnets and stator. Be certain that the glue layer is thin and you clamp the magnets firmly against the flywheel rim until it sets.

 

[anesthes]

Re: 90HP Flywheel question, part # doesn't jive

That's a Mercury flywheel and ignition. Merc DID use the same flywheel and stator mount assembly for the 2 cylinder 40-50 AND 3 cylinder 70. The stator mount was positioned differently for 2 and 3 cylinder engines. Forward direction is cast into the mount for each engine. Youirs should show this too.

Since the 90 is also a 3 cylinder engine, I suspect that the flywheel is correct for it also.

Yes, the magnets do occasionally come off. Gluing them back with epoxy should fix the flywheel. Just be aware that there is little clearance between the magnets and stator. Be certain that the glue layer is thin and you clamp the magnets firmly against the flywheel rim until it sets.

I figured it's probably a few thou clearance. I'll clean them up and reglue. I can make a shoe clamp to follow the curve of the magnets to ensure even pressure.

I'll also snap pictures for the thread to show you guys what I have. I bought the boat last night. Would like to get it fired up if possible so I know what I'm doing with it, check compression, etc.

What is average for these motors, around 125psi ?

-- Joe

 

[roscoe]

Re: 90HP Flywheel question, part # doesn't jive

115 - 140 psi

 

[anesthes]

Re: 90HP Flywheel question, part # doesn't jive

Here is pictures of the stator and the flywheel.

http://members.cisdi.com/~anesthes/top.JPG
http://members.cisdi.com/~anesthes/flywheel.JPG

-- Joe

 

[anesthes]

Re: 90HP Flywheel question, part # doesn't jive

One of the magnets is broke in half. Will this be a problem?

I had read somewhere that when they break, the polarity changes.

It doesn't repel at the break. Right now I have it sitting in the flywheel.

Any ideas?

-- Joe