Balancer cracked at keyway.

[turbows6]

Ok, posting from phone so I'll be brief. My alternator wasn't charging and I noticed the balancer was wobbly. I took it off and noticed it was cracked. The crack was through the keyway area. Has anyone else had this issue?

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[earlbrown]

when they crack that's where it usually propagates. The shape of that keyslot causes a stress riser in that area.

 

[bison]

This is common if the balancer wasn't properly torqued. It can eat away at the crank being loose also


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[turbows6]

This may sound dumb, but that balancer never had a pressed fit. You could slide it on. Maybe it was always cracked. It was this way on two different cranks. I just didn't know any better at the time to worry about it.

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[bison]

It shouldn't be a press fit if it's a stock one


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[qws2000]

Brian... Is this the same thing that you sent pictures of on my motor???

 

[turbows6]

Wow, ok, well let me ask you this... did any other cars use the same balancer that are common in the junkyard? (LeSabre with waste spark 3.0 or 3.8 etc)

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[bison]

Wow, ok, well let me ask you this... did any other cars use the same balancer that are common in the junkyard? (LeSabre with waste spark 3.0 or 3.8 etc)

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Only 84-89 turbo engines with the distributorless ignition system have the same balancer.


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[bison]

Brian... Is this the same thing that you sent pictures of on my motor???

No. The pics I sent you were of a crank gear that was hammered on with a punch and had ding marks all over it.


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[qws2000]

I know the motor will be awesome when finished, I also know that cam you designed is to work with the heads... I forgot what you said about that.. did you have to change anything. You should take some pics and post them up.....

 

[bison]

Yup. I'll send you the pics when i have it at that point


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