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#1
08-13-2021, 11:43 AM
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2 piece balancer
I need to remove my timing cover due to a small crack. I'm hoping that is my only issue.
I took off the crank piece of the balancer, which came off with little effort without using a puller. Here are pictures of what I found. I also could turn it left to right slightly while still in the key. Is that normal or should the key hold it tight? On the shaft there is a definite line you can catch your fingernail on. On the flat side you can an off center scratch going around it like something dug into it. Does that hurt anything? Thanks ,Dave |
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#2
08-13-2021, 12:22 PM
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Pioneer Makes a really nice factory type balancer.
For many years they had excellent quality. Not sure about the last couple of years as I use only the ATI stuff. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#3
08-13-2021, 12:51 PM
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That all seems normal for an older original balancer. You can buy a repair kit to fix the grooves on the OD of the shaft. However if it wasn't leaking I'd probably leave it.
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#4
08-15-2021, 02:38 AM
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If you can rock it side to side check for a crack it the key way.
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#5
08-15-2021, 06:10 AM
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Grooves in o.d. is nomal from t.c. seal ' wiggle r&l is not try a new crank key & see if it stops .
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#6
08-15-2021, 06:31 AM
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For a street motor and if you know how to set the timing properly it’s ok if there’s a degree or so of slop in the key way as it’s the 160 psi of torque that ultimately holds the balanced from rocking.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#7
08-15-2021, 06:58 AM
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x2 on checking for a crack at the balancer keyway
 od for the seal looks average....don't forget to put grease in the lip of the seal upon installation of the balancer... |
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#8
08-15-2021, 04:09 PM
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The hub will crack if the crank bolt isn't tightened properly. Insufficient tightening will allow the hub to rotate putting wear on both the woodruff key and the key slot in the hub, and finally cause the hub to crack.
Interesting that you have three witness grooves on the hub when we normally see only one highly defined groove where the edge of the seal makes contact. The multi contact points look suspicious and you should take a closer look at the seal. I would swap out the hub because of the crack. Once a replacement hub is in place just make sure you torque the crank bolt to 160 pounds.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
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