crankshaft set up

[gary ponce]

i have 1972 175 jackpiner and i need to check my crankshaft for proper width from web to web and also the clearence between the connecting rod and the inside of the crankshaft web before i do my shimingon my bearings, if anyone can share this information in penton land i would be a happy piner thanks

[john durrill]

gary,
are you replacing the rod? or is it the stock rod?


 

[gary ponce]

john ,first of all thank you for responding to my question, no i'm not replacing the rod asy. i need to know the overall width of the crank asy. before i start my inplay shimming on the crank bearings.the crank asy i have the rod has no  are very little side to side play is way i question the overall width.

gary ponce

[john durrill]

Gary ,
I'm not quite sure  what your asking me.
Usually the rod pin is flush with both sides of the crank.  But when the rod was installed , the person doing the installation sets the side play on the  rod up buy pressing the crank halve together. I have a 175 crank I can look at and let you know what the side clearance is on it. would that help?
John



Edited by - John Durrill on 02/12/2002  02:43:50 AM

[gary ponce]

hello john, yes that would be a help when ever you get time to check the width, thanks again,  buy the way i did notice that the crank pin was not flush, it was out one side about .o10.

gary ponce

[john durrill]

gary,
 sorry to be so long in getting back to you.
 side clearanc on the NOS crank for my 125 was .015. Talked to a shop that does a lot of crank rebuilding and they said thats about right for a rule of thumb on most  125 to 200 cranks. wear limit should be somewhere in the .025 to .028 range. thats in Inches. you can use a feeler gauge to check it.
John