Friday, March 23, 2018

Bottom End Build: Day Off Crankshaft Work

With a day off, decided to attack the crankshaft swap.  Needed to take the "good" one out of the display engine to use in the real bottom end.  I'd put the "bad" one into the display.

Here's why that crankshaft is a no-go:
  • It has holes drilled into the flywheels which means it would throw off a stock motor.
  • A standard piston pin doesn't fit through the connecting rod!!

The swap went relatively smoothly...
  • Added the new woodruff key to the bad crank so I could fit the rotor.
  • At first couldn't get the cases to close on the new case but just did it again (and a couple times more).  Just need to get the "feel".
  • Installed both thrust washers on the good bottom end.
  • Be conscious of the 2 thrust washers on the two sides of the kickstarter gear.
  • Ran into a weird problem where I couldn't get the tranny to fit.  Need to make sure to turn the shift drum to full counter-clockwise before installing to set the gears in an optimal position.

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