Crank & Conrod bearings

[79XS11F]

That's interesting .. I would have guessed that they would have set things up by strength of metals involved so that the bearings took the majority of the wear.
So what that thread says is that the numbers are only good for assembling a NEW engine on the factory floor?
Rob

[79XS11F]

I took some photos for those who have not seen some of this stuff other then in a manual or don't have a manual ..yet.

The main crank casings numbers are on the under side of the engine mounting lugs and look like this.

[79XS11F]

This IS NOT the Con Rod cap numbers ...



This IS the Con Rod cap numbers ...

[79XS11F]

This is what the crank shaft grouped numbers look like. They are on the left hand counter balancer ...

[79XS11F]

A fair amount of floor or bench space is needed for a job like this and as you can see I really don't have enough space. If you tackle a job like this for the first time BE NEATER and have MORE space ....
Rob

[79XS11F]

WOW !!!

WOW ... I'm glad I opted to do this job because the bearings do not look nice at all. That side play that I was concerned and asked about in a different thread is almost completely gone with the new bearings in place. The crank now only moves sideways enough to "just" be able to detect the movement.
Rob

[Shappers]

Which shells did you go with in the end? Did you go by the numbers or just fit the thickest ones in?

[79XS11F]

Originally posted by Shappers
Which shells did you go with in the end? Did you go by the numbers or just fit the thickest ones in?

I went with the factory recommendations. The bearings are much softer then the crank pins and should therefore take the bulk of the wear. I'm sure i will be in good shape with the factory selections and will not have to worry about being too tight. I'll just break her in again when she hits the road.
Rob

[trbig]

I like to do wheelies and fly by the police station at 100mph+ on the same night I do my bearings... lol. (It was all either Wildkat's or Hobbyman's fault)


Tod

[79XS11F]

LOL will there is something to be said for 'finding out what you got" right away LOL LOL
I'm sure they will be fine BUT .. and there's always a BUT ... with the dollars and time spent on the top end I will break her in as suggested by Yamaha.
Rob