Bent crank?

[jda1942]

Just for the heck of it I had the clutch off and put an indicator on the crank and when I roll it over I get .005 out of being true is it something that I should worry about? Haven't had any trouble keeping flywheel tight or anything no clutch warble. Should it be pulled out? Suggestions? 9.25" 3" journal A crank thanks

 

[Josh Blackburn]

.005 is Normal. .020+ is when you worry.

 

[jda1942]

Much apriciated thanks josh!

 

[Earl-IL]

I have been involved with a lot of stroker cranks. On the clutch side of a 2 cyl are you indicating up close to the main or out on the end ? Are you indicating on a surface that is machined concentric to the main ? I have seen a lot of 4 & 6 cyl cranks with too much run out on the flywheel flange face and on the front snout. All of this should be eliminated by the proper welding & journal build up. The straightening process is not a big press ,but grinding journal in several steps and peening the crankshaft radius to remove the stress from welding. These are steps every crank stroker fail to do.

 

[Earl-IL]

Sorry,I intended to say, These are steps NOT ALL crank strokers follow.

 

[jda1942]

Was measuring off of the machined area near the bearing where the clutch bushing rides