I have three torque wrenchs, an inch pound that goes to 250 in/lbs, a 10-75 ft/lbs, and an 80-250 ft/lbs 1/2 drive. It's best to use a torque wrench where your final value is in the middle of the wrenches range. Too close to the limit and accuracy suffers.
It does'nt matter what parts were where, new or used, you need to be sure of the clearances BEFORE you button it up! Anything else is gambling. How do you know your crank juournals are still round, or galled to the point of scuffing the new bearings? How do know if it's not worn to the point of having too much clearance with std bearings?
I can't believe this is controversial in any way. Measure it, double check it, be sure of your clearances, or pay the penalty!
Excessive clearance will cause at the minimum a loss of oil pressure, and at worst loss of oil film and a spun bearing!
Too little clearance will cause a spun bearing or siezure of the rotating assy! Either way measuring and adjusting is the only way to know that your not just lighting a fuse by starting it!
This applies to race motors, stock rebuilds and mild pref motors alike. The local lawnmower repair shop measures everything they build, and they only charge 50.00 to build 3 horse!
