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crank pulley wobble #741364
October 07th 2018 2:37 pm
October 07th 2018 2:37 pm
Joined: Apr 2004
Posts: 1,726
Ireland
shaggy Offline OP
veteran
shaggy  Offline OP
veteran
Joined: Apr 2004
Posts: 1,726
Ireland
I've been cleaning up the front end of my motor and making it easier to access. I've replaced the stock fan and cowl with electric fans and have upgraded the brackets and pulleys to try and sort out belt squeal issues. It's looking pretty good now but there is still a wobble in the crank pulley.
Could this be due to the harmonic balancer I'm wondering?
Maybe the rubber in it starts to deteriorate after nearly 40 years? But then it appears that the pulley mounts to the inner part of the balancer so could it be it just needs removing and re-seating or maybe the keyway gets worn.

[Linked Image]20181005_185311 by shagedemus, on Flickr

Last edited by shaggy; October 07th 2018 2:38 pm.

79 chevy G30 cobra camper conversion.
[Linked Image]
Re: crank pulley wobble [Re: shaggy] #741366
October 07th 2018 3:56 pm
October 07th 2018 3:56 pm
Joined: Apr 2004
Posts: 1,726
Ireland
shaggy Offline OP
veteran
shaggy  Offline OP
veteran
Joined: Apr 2004
Posts: 1,726
Ireland
Yep just did a bit of searching and coffee youtube video watching and it confirmed my suspicions.
I should have watched these before I pulled the ballancer off my last motor and stuck it on this one!!! rolleyes worms eek shocked cry frown

New puller tool, harmonic ballancer and install tool ordered.


79 chevy G30 cobra camper conversion.
[Linked Image]
Re: crank pulley wobble [Re: shaggy] #741367
October 07th 2018 4:26 pm
October 07th 2018 4:26 pm
Joined: Sep 2005
Posts: 8,590
Georgia, USA
CatFish Offline
carpal tunnel
CatFish  Offline
carpal tunnel
Joined: Sep 2005
Posts: 8,590
Georgia, USA
Don't forget the seal. They might not have one down at your local parts store. shocked


"Have you ever noticed that insisting that something is wrong is not nearly as powerful as suggesting that something is wrong?”
Re: crank pulley wobble [Re: shaggy] #741379
October 08th 2018 6:54 am
October 08th 2018 6:54 am
Joined: Apr 2004
Posts: 1,726
Ireland
shaggy Offline OP
veteran
shaggy  Offline OP
veteran
Joined: Apr 2004
Posts: 1,726
Ireland
Good point, cheers Catfish smile


79 chevy G30 cobra camper conversion.
[Linked Image]

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