Fast Fred's Secrets of the OMC MOD50's Thread #1

[Mark75H]

It only takes a little rust to mess up the tapers on the end of the crank and flywheel ... stopping you from properly seating them together. If they've been apart for any period of time it is good practice to lap them with a little compound to assure you have the flywheel properly seated on the crank to avoid shearing the Woodruff key.

[Fast Fred]

bullet proof as it gets is good for me, first factory race moda i ever had, broke it about hr 5, $ucked , no fun, fun over

[David_L6]

One has better balance than the other.

Which one? (I'd guess that it really doesn't matter in FE/SE as you can have the parts balanced. Just curious.)

I think Ralph sheared the key in his engine at Centrallia on Sunday. We could not get it started for SER. Looked and the timing was way off, and it bit the crap out of us while trying to crank it.

Yes, the key in Rotten Ralph's motor sheared Sunday at Centralia. I still have a sore paw to prove it! (It bit me before you and your Dad came over to help.)

[Fast Fred]

cryo ther key, all modas have a low speed and a high speed vibration. with balance you can move it and or smooth it.

then i fixed that racin Yamaha outboard, Fun on
many moons ago.

[David Mason]

Which one? (I'd guess that it really doesn't matter in FE/SE as you can have the parts balanced. Just curious.)

The newer style crank is better balanced from the factory, but it still has some crappy vibrations to it.

Yes, the key in Rotten Ralph's motor sheared Sunday at Centralia. I still have a sore paw to prove it! (It bit me before you and your Dad came over to help.)

That was you cranking the beast.... hehehehehe. Ya, I saw it snap a couple times.... figured something was up.

[Fast Fred]

Ok, seems the mod50's the 19s and the 31m each take a dif' starter.
anyone Know for sure what the difrances are? looks like if i move the front tab,
the one with the single bolt, forward and a bit lower, that would work.
any info would be cool, or if you got a #388338
thanks
FF

[Fast Fred]

ok, lookin at the 31m exhaust, and the 19s exhaust, the 19s aint got no Squese, seems I got to get one in thare, any pointers?

[NERSTROM]

Fred, they all got squese!

[Fast Fred]

thinkin she needs some more right ware it turns in to the adapter thinkin 100%to
about 55-65% then back to 100%, stock it looks like 100% to maybe 80% in the
turn into the adapter then back to 100%

[Fast Fred]

hear we got a Factory Mod50 head,