My old crank, why did this happen?

[slidebabyslide]

Ok, so i guess this is the main reason i need a crank:naughty:.




My motor never made any noises and the bolt was not even loose. I guess previous owner of my car? What do you guys think happen. CSI the crank ...lol :momaru:

Should i reuse my keys or not?>

 

[IJ.]

Loose bolt

 

[GrimJack]

Loose bolt x 2

 

[Frank Rizzo]

From using an impact gun instead of a torque wrench to tighten it.

 

[Nick M]

From using an impact gun instead of a torque wrench to tighten it.

:nuts:

 

[mkIIIman089]

Loose bolt

x3

 

[johnathan1]

If the bolt wasn't loose when you pulled it off...maybe it was run loose at some time in the past...

 

[JustAnotherVictim]

I had one of those.
The crank was scrapped.

 

[Poodles]

it CAN be repaired...

 

[jdub]

Yes it can using a faux carbon key and welding...it will need to be turned. If it's a 7M crank (vs 6M) I'd look in to doing it if the rest of the crank is in good shape...7M cranks are getting hard to find.

Should i reuse my keys or not?

I'd get new keys

 

[slidebabyslide]

It's a 6m crank, I don't really want to spend more money to fix it i will just get trow it away, thanks for your input...guys.

 

[sogi99]

x4 did that on my 87t i just went with new keys and made sure its aligned properly at to dead center before tightening it back in

 

[Dan_Gyoba]

Yeah... There actually IS a reason why the torque spec on those is 195 ft-lbs.

 

[90T04]

Just had my 7M crank repaired locally for $90.00. Its at the machinist right now being checked for straightness.

 

[upgradedsupra]

Loose bolt x4! Even if it's a spark plug, I like to use a torque wrench on it. They have specific torque settings for a reason.

Duane

 

[Kai]

Dont bin the crank. Give it away to someone that might want to use it and have it repaired themselves.

 

[slidebabyslide]

It's funny because i talk to the only owner of this car and he told me that he replace the crank pully( i was dip) ...lol

 

[buldozr]

the southerners here call that 'rolling the keyway'. I did that on my sbc 327 in the v8 z, you dont want to try to weld that. Usually caused by a cracked crank pulley or like said previously, the crank bolt backing out. It will throw off the balance and it will just come apart again(cast or forged crank, doesnt matter) from my experiences. I lost a block cause of my 'patching' wouldnt hold 6500rpm shifts. Sorry bout your bad luck and hope you get your baby back on the road soon.

 

[slidebabyslide]

Thanks for your words.

 

[GrimJack]

the southerners here call that 'rolling the keyway'. I did that on my sbc 327 in the v8 z, you dont want to try to weld that. Usually caused by a cracked crank pulley or like said previously, the crank bolt backing out. It will throw off the balance and it will just come apart again(cast or forged crank, doesnt matter) from my experiences. I lost a block cause of my 'patching' wouldnt hold 6500rpm shifts. Sorry bout your bad luck and hope you get your baby back on the road soon.

Did you weld and cut in the same place, or 180 out?