Crank play...?

[Juggaloclownz187]

How do you tell what is "normal" and what is "excessive" when it comes to crank play?

I remember reading that side to side was ok but up and down play was bad?

Is that correct? And what would be considered too much side to side play?

Thanks guys!!

 

[yb200]

I remember reading that side to side was ok but up and down play was bad?

thats correct .

 

[Juggaloclownz187]

With that being said, is there such a thing as TOO MUCH "side to side" play?

 

[yb200]

its hard to tell without seeing a vid of your crank

 

[Juggaloclownz187]

Video coming right up LOL

 

[Little-J]

get a feeler gauge.. Stick it into the gap in between the crank and the side of the con rod..
Hot Rods recommends in between 0.5 and 0.7 mm of play.. In practice your engine can run fine with up to 1mm or more, but keep an eye on it.. anything more than 1mm is too much according to any manufacturer, but your engine will run fine, the clearance is meant to be small to keep the con rod from twisting at high speeds. twisting will cause the bearings to wear out faster, but is unlikely to cause the rod to fatigue and crack. hope that helps.

 

[yb200]

get a feeler gauge.. Stick it into the gap in between the crank and the side of the con rod..
Hot Rods recommends in between 0.5 and 0.7 mm of play.. In practice your engine can run fine with up to 1mm or more, but keep an eye on it.. anything more than 1mm is too much according to any manufacturer, but your engine will run fine, the clearance is meant to be small to keep the con rod from twisting at high speeds. twisting will cause the bearings to wear out faster, but is unlikely to cause the rod to fatigue and crack. hope that helps.

very well explained man have some repI:I

 

[Juggaloclownz187]

WOW great response!! Well its def. under those specs! And the camera died before i got the jug off, but managed to get a video of the wiseco moving up and down....

Oh yeah, heres a pic of my children's Doberman puppy standing by the front of the bike LOL ;-) My daughter wanted me to put that picture on here LOL

+Rep for sure thanks guys!!

The piston look like it moves good?