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Crank Damper HELP!!!

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Old Apr 10, 2007 | 06:42 PM
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Default Crank Damper HELP!!!

After a week of waiting for someone to key my damper I am still at a loss.... I went to 3 different machine shops to have a keyway cut into my stock damper. The last place I went was a shop that had an EDM machine. This EDM machine works off electricity and the machinist could not get the damper to conduct electricity. He bead-blasted the inside of the damper where it meets the crank and still no luck. I asked him if he could broach it out and he said he could but if it was cast it would not work. Does anyone know what the inside of the damper is, where it meets the crank? Any help would be great!
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Old Apr 10, 2007 | 07:01 PM
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its aluminum..

do you not want to pin the crank?
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Old Apr 10, 2007 | 07:05 PM
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From: http://www.mphparts.com 800-364-1975
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I had an OEM balancer keyed using a broach.
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Old Apr 10, 2007 | 07:39 PM
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Originally Posted by diynoob
I had an OEM balancer keyed using a broach.
Best news I have had all day! I will call in the morning and tell them to broach it. You dont by chance know the size do you?
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Old Apr 10, 2007 | 07:45 PM
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Originally Posted by 95BlueBomber
Best news I have had all day! I will call in the morning and tell them to broach it. You dont by chance know the size do you?
Sorry, I don't know the size -- I just took the old balancer and the new balancer to the machine shop for them to reproduce the keyway.

Since it only spins in one direction a very close estimate will probably work OK.
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Old Apr 10, 2007 | 08:26 PM
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The guy at the machine shop bead blasted the inside of the damper to see if there was a coating on it. Do you all think this hurt anything?
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Old Apr 10, 2007 | 08:39 PM
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Probably not, since it will be keyed. Otherwise the interference fit might be upset a hair, but unless he bead blasted it with diamonds I doubt it took off much material
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Old Apr 10, 2007 | 08:42 PM
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Originally Posted by diynoob
Probably not, since it will be keyed. Otherwise the interference fit might be upset a hair, but unless he bead blasted it with diamonds I doubt it took off much material
I hope he didn't, my bill would be very high!
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