250 monza won't shift

[flanker]

Yeah I'm just taking my time. I took the case back to the machine shop and they re doing the clutch side crankcase allow the drum to move but not too lose. I'm really psyched to get it back together but I'm just going to recheck everything with each step. I tested my crankshaft and it's not bent. The arm is within spec and the oil trap has been majorly cleaned, I'm surprised it's in good shape the oil looked like it had turned to coal.

[Jordan]

It's OK, but how come you're getting the crankcase machined? I thought you had a selection of shims of various thicknesses.
Did you measure how much more clearance it needs? The crankshaft and gearbox shafts should be removed to check drum clearance.
It's likely only an insignificant amount needs to be provided, so you'll likely fix your problem.

I was shown how to set up a Ducati single gearbox, and then spent ages doing it.
It started by confirming shift drum clearance. Later I found that, because I wanted to make adjustments elsewhere, I had to keep the shift drum clearance, but move it over to one side - that is, decrease it at one end and increase it at the other.
According to Ducati literature there is a standard setup for shimming the individual gears. But, there is the unofficial method to reduce the gears' end play sloppiness, thereby enabling the shift dogs to engage more fully. It involves adding more or different sized shims. The trick is to avoid shift fork wear as a result.

Jordan

[flanker]

Well jordon my case was cracked when I got it so I had it welded and then the extra weld was removed by the machine shop, however, they failed to remove a small amount on part of the clutch side drum, so the clutch drum was stuck and I was unable to move it when every thing was assembled. so it just needs to be smoothed out and the drum should turn with ease. I hope I explained this properly.

Today I did what you said and I checked all the gears and shafts for quality and straightness and they look great. The crankshaft is great too. But I think I have to take an emory cloth (or the equivalent) to allow the main bearing to pass though the shoulder easier. Right now its a little tight. I need to shim that as well!