Picture of nick in Tomei CrankShaft, any educated ideas.

[Dragon Humper]

Give me a break you guys, any machinest will look at that and laugh. That's nothing, as long as the nick was made before it was woked on you're fine. Even if it happened after all it needs is a little touch up with soft polishing stone on a Dremel. That little nick will not start a stress riser, it's nice and smooth. The sharp ones cause risers.


Jon.

[bobbo]

Give me a break you guys, any machinest will look at that and laugh. That's nothing, as long as the nick was made before it was woked on you're fine. Even if it happened after all it needs is a little touch up with soft polishing stone on a Dremel. That little nick will not start a stress riser, it's nice and smooth. The sharp ones cause risers.


Jon.

Not trying to be harsh or anything but wouldn't you rather the people you're going to advise for error to the side of safety?
Everyone could say (if the situation was worse) "oh yea go ahead and run it!" and have you run into serious problems.
Considering the size this is what I would do for piece of mind...
When your assembling that journal get some machinist bluing and apply it to that area then assemble the rod. Take a look at the pattern that is left on the bearing when you take it apart again.
If the bluing is everywhere but where the scratch is (on the bearing) then it's smooth and "shouldn't" cause any bearing damage.
If it "outlines" the scratch in the bearing then you'll end up wiping the bearing.
From what you've said you shouldn't have any problems.
If you do this operation make sure you get rid of ALL OF THE BLUING.

As far as the stress concentration goes from what has been done to the crank and the surface is treated that well and edges are smooth I'm pretty sure you'll be fine...

GIVE 'ER!

[R32GT-R]

thinking i may assemble as a spare shortblock, as i am already building the one in my sig.

[mitch32]

That nick I wouldn't consider a stress concentration. It is but I wouldn't worry about that, its not sharp enough to be a stress riser and even it was it wouldn't matter cause the crank to snap. The only thing that would worry me is the fact that it can mess up the bearings. If the nick was made after the polish then it'll hurt the bearings. I would say use a microfiber towel and rub the nick if you feel it catching or a weird sensation, or if some of the material gets stuck on the nick, then I'd be worried.

With that said you should try to get your money back from XS, its a shame theres a nick on an amazing crank. You could also bring it to a machinist and get him/her grind the nick off, then just run an oversized bearing on that section. I'm almost 100% sure you can get custom made bearings from ACL if that don't have the size you need. Also that nick is no more then a few thou deep from how it looks in the picture, so you might not need to weird bearing size (you may be within tolerence).