I accidently dropped a wrench against my crank today. I was planning on selling it and wanted your opinions about the effects of it before a buyer picks it up. Is it safe to run this crank?

Here's a picture of the nick:

 

Machine shop time.

 

It doesn't look like it hit the journal...you might be okay. The most I would say is get it rebalanced if your really concerned.

 

bah, I'd say it's fine. Doesn't look like it took too much material off. When you think about all the oil that gets on the crank too, it must weigh the same, if not more, than the material taken off there so I'd say it's fine.

 

Dude i honestly think that really isn't a problem, unless there is journal damage. At most just get a balance. Also what the hell kind of wrench did that to FORGED STEEL.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rjay8604 &raquo;</TD></TR><TR><TD CLASS="quote"> Also what the hell kind of wrench did that to FORGED STEEL. </TD></TR></TABLE>

a forged steel wrench

 

Damn Rod, that must have been one heavy wrench
Crank looks fine, just make sure that no material is hanging off that might catch the rod as it rotates.

 

If the the burr from the ding can't touch the rod, I think it's fine. If it could possibly score the rod, the rod would have a reduced fatigue strengh, and you should carefully file or grind the burr down. Good luck.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">Damn Rod, that must have been one heavy wrench </TD></TR></TABLE>

Todd is spot on. Cranks are pretty tuff, won't even attempt knife edging at home no more.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MadtownSi &raquo;</TD></TR><TR><TD CLASS="quote">

a forged steel wrench </TD></TR></TABLE>
Touche

 

Will nicks like that actually affect balance?

Doesn't seem like any material removed at all...and yeah...damn thats a heavy wrench to actually do damage like that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rocket &raquo;</TD></TR><TR><TD CLASS="quote">

Todd is spot on. Cranks are pretty tuff, won't even attempt knife edging at home no more. </TD></TR></TABLE>Just curious, how did you go about attempting knife edging at home?

 

Used a grinder. Was like working on Kryptonite. Took 2 weeks of blood sweat and tears to even do mild profiling. I'll just say look to the cyl. for hp and not the crank.