Crank Binding

[Slackdabber]

199A Rebuild progressed smoothly....until, the slightest tightening of the engine bolts and the ignition side crank flywheel is binding on the LH Crankcase.   Main bearings are where they should be and the crank belongs to this motor.  Any thoughts/suggestions please?  

Also the crank pin isn't flush with the crank halves, on the LH side which is fouling, it is recessed, on the other half it is very slightly proud.   Should it not be flush on both sides?

Edited 21 hours ago by Slackdabber
Additional info

[konrad]

I think this relates to your prior post about huge side-clearance on connecting rod.  I have read about the washers on the piston pin, but have never seen a motor that used the technique.

What struck me as odd, is that the big-end bearing itself seems to have a lot of clearance to the crank wheels and could walk from one side to the other.   

So, even though that motor may use washers on the piston pin for rod centering, it may still be that the crank wheels are too far apart.  But this is all speculation on my part. I don't work on "antique" motors. 

[lineaway]

So I looked at your pictures. Show us how the pin sits in the crank from a side view. Most rods only needed 18 thousands clearance. Granted I have luckily not done a bul. 

Edited 12 hours ago by lineaway

[Slackdabber]

Crank pin position

[lineaway]

There you go, it is not pressed all the on the one side