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F20 torque spec, NOT rod or main

I

IanC

Well-known Member
I've already gotten rod and main specs out of the archives here. Does anybody have the spec for the front crank nut,and the flywheel to crank bolts? I checked the archives back to 2001 with no luck. I can go with generic chart for the flywheel, but not crank.
 
there are no torque specs. Torque wrenches were not common or maybe not available yet when thes were made. Just gotta use common sense. Bigger the nut, the tighter you can make it. Pretty much everything was hand tightened back then, so keep that in mind.
 
Most Dealers probably didn't have torque wrenches when these were built.
Only one big nut on the flywheel of the 20, bigger than the one on the front of the crank. Tighten as tight as possible and then bend the locking washer to lock it. This sets the position of the rear crank bearing, then tighten the front nut on the crank and your set. The front bearing can move fore and aft in its holder the rear is held by a lip. Rod torque is kinda difficult with castle nuts that are secured with cotter pins. You will have to torque and then check if the cotter lines up, if not then tighten more to line up the next slot. There is no torque for the mains, they are ball bearings in cages held together in alignment by the big nuts on the crank and flywheel.
 
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