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Old 09-03-2006, 07:22 PM
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One hell of a time with Balancer

This balancer on my 427 BBC is giving me hell. It acts like it don't fit, pulled it off and see a grove that I can feel on the inside of my balancer where it was trying to go on. Whats the deal? surely there is not a larger size to buy???!!! Can anyone tell me what I'm doing wrong?

Thanks, John

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Old 09-03-2006, 07:44 PM
russlaferrera
 
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balancer

How is the key way? Is the key to tall making the balancer too tight? Does it fit W/O the key? Try to narrow it down to the Key way or the outside dimensions of the crank or the inside dimensions of the balancer. I hope you checked for burrs.

Hope this helps Russ
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Old 09-03-2006, 08:43 PM
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if its aftermarket it may need some sanding inside it
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Old 09-03-2006, 10:31 PM
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RUNN141 is correct. Virtually ALL of the aftermkt balancers are too small!! It is common to remove .001 + to get a proper fit.
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Old 09-03-2006, 11:14 PM
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How are you trying to install it? Are you using an installation tool to press it on or just trying to slip it on by hand? The balancer should be a pressed on and will have an interference fit. Do not hone the hub to allow it to slide on by hand. Some cars do have slip on balancers but they are often held in place by much larger bolts and are torqued to as much as 130 ft lbs. The Chevy balancer is only retained by the press fit and a 7/16-20 bolt. You should obtain an installation tool if you don't already have one. Summit sells them under part number SUM-G1023 for $35.95, very reasonable. They work great. If there are no burrs, nicks or other damage to the crank snout or the inside of the balancer then lubricate the crank snout with a little bit of oil and press it on using the tool.

Apparently you can soak them in boiling water and install them as well...http://static.summitracing.com/globa...sum-161350.pdf

Good luck...
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Old 09-03-2006, 11:27 PM
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Thanks for the replys!

I'm going to get the tool. I've talked to a couple of folks and after reading these replys - seems I need the tool to press it on. There are all of the hill-billy ways of getting one on, but I understand now that you are supposed to press it on. Thanks again
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Old 09-04-2006, 12:04 AM
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Quote:
Originally Posted by dpjmw
I'm going to get the tool. I've talked to a couple of folks and after reading these replys - seems I need the tool to press it on. There are all of the hill-billy ways of getting one on, but I understand now that you are supposed to press it on. Thanks again
Before I took a chance and tried pressing on something that may have too much interference, I'd at least mic the old/new parts and compare.

I do know that if Bob offers an answer, it's real world (hands on) advice, not BS. I'm sure if you find any difference in size Bob (as well as many others on here) could give you a max interference measurement.

You might get that balancer on with that tool, but you may play he*l ever getting it off again with too tight a fit.

Only takes a minute to mic things and be sure........
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