Nick in crank journal - would you run it?

[Supershafts]

Yes Cranky that is the one thing i don't like about the RMVB issue, had a similar issue once, rocker broke, push rod came thru valve cover, almost thru the hood, lifter came apart, retainer clip came out and it immediately found it's way to the pump, broke the shaft and 0.0 oil, ain't no one seen a drag car stop so quick in there life, i still think it went from somewhere around 122 at that point to 0 faster than any cobra ever

 

[RustyRatRod]

There's a lot to be said for that kinda motivation. lol

 

[snakeoil24]

just polish it and run it

 

[rev.ronnie]

I would worry a lot more about all the strees risers from the oil feed holes drilled in the whole crank....meaning, I wouldn't worry about it at all.

I've seen cranks with much worse "scarring" after being damaged and ground. That is nothing. Heck, I've seen cranks with casting flaws much worse than that.

 

[sleepar]

:head_smack::head_smack::head_smack::head_smack::head_smack:I know I'm late and hijacking the thread because I can't post another way..... I just had my67 318 forged crank and rods done. Balanced and I noticed 2 rods were nicked and my crank now has a dimple.... not worried about the dimple but the guy at the shop let me know he has a bunch of motors if I ever would need one.... wonder how he knew ....the nicks are about 1/16" on the edge of the I beam neer the wrist pin... they didn't polish my crank and I got that sinking feeling when I left there.... and don't trust the ballance job to risk sending a piston into a new set of edelbrock heads.... hmmm if the guy there has all the molars he could have spared a couple of rods and I wouldn't know the difference..... why not polish a crank?

 

[Budnicks]

Unfortunately I've run worse & had no issues, no excessive wear or oil pressure changes etc... Run it, now if it was a high dollar build, that subject to 8500rpm or for a customer, I'd do thing differently, but for a run of the mill, street/strip build... run it, don't worry, even if rusty did it...

 

[sleepar]

I found my rods reconditioned for $125 a pair from AAA something redone by Trw. I feel a weight off my shoulders..... now I just have to build a potato gun that will launch 2rods through a plate glass window cruising by at 40 mph...... and find a scale that will weigh the rods and a few prayers that they are with in -5% of each other and the nicked up ones with arp wave bolts.

- - - Updated - - -

Could the dent in my crank be a factory flaw???? I know no-one has worked on the motor but me and I could have missed it the dent doesn't protrude like an oil hole that was started and oops.... I don't think they dropped my crank to hit there it would have hit a counter weight.... this is the best thread I won't work about that... I remember Kawasaki had a sprocket on the early 70's trail bikes with dual range that was dimpled like a golf ball for the chain oiling system I went around the journals with 600 grit sand paper and some kerosene.... 55,000 mile motor all baby miles ain't getting nicked rods....

 

[Donny]

First off, I would NOT run it, period, no way, not like that! Why would you? Is it a steel crank, I didn't see anything about the material its made of, if it's steel, I would think it could be welded up, then dressed up at a machine shop. If it's a Cast crank, well, your call!

 

[happyjackdaddy54]

I have ground crankshafts for years. So, that nick will do nothing but hold oil! save your money and worries! Run it!

 

[miller]

Wow. All over the board. Another 2 cents...

With all the cross-porting, filleting the oil ports, etc., that can be done on cranks, just like said, main goal is get the sharp edges off. They would shave the bearing. At least rounding those sharp edges, blend them in, and polish it. Past another place for oil, it will go, as long as the bearing slips by it.

Hearing the machine shop horror stories, is making me think.
I've got a 440 steel crank, never been touched, down .004-.005 (I think). Think I'll measure that thing again. Thinking about just looking at under-size bearings and inserts, if they will go. Too damn much to think about. Ha!