Frozen ABA crank during rebuild pt II

[rapieper at yahoo.com (Ron Pieper)]

Any chance you have a bent rod?  Or something is installed backwards?  (thinking rod-piston).

Ron

--- Jeff_Toomasson <area53@validpath.com> wrote:
> First - thanks to those who responded the first time around.
> 
> Taking Anson's advice, I checked the axial play of the rods and isolated the 
> binding to piston/rod assembly #2. Sure enough, removal of piston/rod #2 
> allowed the crank to spin smoothly. Then I collapsed the rings of piston #2 
> and installed it upside-down from the top and was able to lift and lower it 
> pretty easily by hand. On top of that, I took both the rod cap and rod base 
> (w/ bearings) and "rotated" them around the underside of the #2 crank bearing 
> surface with no problem.
> 
> But I bolt it all back together and it binds...ggrrrrr....axial play is not 
> manually detectable (I don't have feeler gauges)
> 
> My theories:
> 
> 1) something on the side of the rod journal is binding on the crank or it's 
> just too wide
> 
> 2) some portion of the #2 crank surface is warped
> 
> Again, rod/main bearings are new and standard and have passed tolerances as 
> measured by plastigauge.
> 
> Can I have the rod machined on the sides to increase axial clearance? Is this 
> not recommended?
> 
> Input is always welcome.
> 
> Thanks, Jeff
> 
> 
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