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New Vibration Dampener after Overhaul?

Posted By Ol' Kenny Tuesday, December 18, 2018 2:17 AM
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Ol' Kenny
 Posted Tuesday, December 18, 2018 2:17 AM
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Last Active: Tuesday, March 19, 2019 2:34 PM
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I wanted to consult the experts on this forum about the need to install a new vibration dampener after an overhaul on my 855 small cam. I am finishing an out of frame overhaul and have heard that it is a good idea to install a new vibration dampener. The old one looks OK from the outside but I'm not sure how old it is. What do you guys think? Any advice would be appreciated. Thanks.
Newto
 Posted Tuesday, December 18, 2018 9:26 AM
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for the minimal cost of a damper after overhaul it's a good idea.

You can visually check yours for leaks around the outer edge of the front face and the text book method for checking is to use sandpaper/emery paper to clean off the paint at 4 points
3,6,9 & 12 o'clock & then measure the thickness of the damper at those 4 points.

A variation of 0.010" in thickness is all thats allowed...any more than ten thou and the fluid inside the damper has gone off and the damper is u/s.

If you're going to buy a new one get the 400hp damper....p/n 217323....slightly larger than the standard 211915 damper but does a better job.

cheers,

Newto
junkmandan
 Posted Wednesday, December 19, 2018 2:12 PM
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If you've ever seen the articles in Movin' Out newspaper , normally found in truckstops, you'll believe what Bruce Mallinson from Pittsburg Power always advocates ! It can prevent a broken crank !
kblackav8or
 Posted Saturday, December 29, 2018 2:26 PM
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Always a good idea. They do wear out.


Ol' Kenny
 Posted Thursday, January 03, 2019 8:48 AM
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Good advice guys, I ordered a new dampener today. Better safe than sorry with a fresh overhaul.

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