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[stinkwheel]

I know someone on here had an unexpected webbing in the casting that fouled the flywheel and had to burr it down before fitment. I'm nearly at the stage you're at and I went over the casings with a pneumatic whizzer to remove any casting marks from the inside because the new flywheels are a much closer fit.



If it's still sticking, might be worth putting some engineers blue on the flywheels to check for rubbing spots?

[Alan R]

Yes, good idea Stinkwheel........Just another plea for the use of photos.....The collective "We" might see something that the contributor had forgotten to mention....Thanks..

[Adrian]

Back to the days when machinery had to be assembled by skilled fitters...



It would be nice if it just worked out of the box, though, especially as you have not only had the cost of the 612 kit, but also shipping to the USA and customs fees.



A.

[Woodsman]

Today I put the old original Crank back in the Cases. Snugged them up and the Crank still spun easily. Took it apart, put the new Crank in, slowly snugged up the Cases while rotating the Crank which got harder to turn as the Cases became tighter. Which eventually would not turn at all when the Cases were tight together. I do not hear or feel any grinding or interference as I'm rotating and tightening. I do notice the thrust washer on the timing side is thicker than the one on the drive side. Might try a thinner one there. Will also get some engineers blue to see what that tells.

[Adrian]

It sounds like a careful measurement of the old and new crankshaft and flywheels is needed for comparison. The new assembly is obviously a little wider than the original - somewhere.



A.

[Chris Tindal]

Woodsman, did you use the old thrust washers or get new ones? I bought new ones for my 59 Bullet but one of them was marginally too thick. I had exactly the same symptoms as you, it would spin freely but as soon as I tightened the crankcase nuts fully it locked up. I swapped the offending washer for an original and all was well.

[Woodsman]

I'm currently using the old thrust washers, but have some new ones ordered. Just as a test, I'll remove the drive side 'thinner' washer and see if that loosens things up. If that works, I'll try a thinner washer on the timing side and see what happens then. I'll also take some measurements on the 2 Cranks to see what the differences are. Also, I'll be off this message board for the coming week. My wife & I are heading out west to play a little golf. Oh, and while we're out there I'm going to bring home a very nice 1967 Triumph Mountain Cub.
Thanks again to all who have responded. This is truly a great resource for those who have been there & done that... and those who haven't.