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Knocking S&S evo

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Old Dec 7, 2014 | 08:09 PM
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Default Knocking S&S evo

This is driving me nuts,anybody know why this motors knocking?
 
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Old Dec 7, 2014 | 08:15 PM
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Make sure everything is tight?
 
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Old Dec 7, 2014 | 08:20 PM
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Collapsed lifter, bent pushrod, could be any number of things.
Have you opened anything up yet?
 
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Old Dec 7, 2014 | 08:44 PM
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Yes I pulled the lifters and rollers were smooth ,noplay also pushed down on them and couldn't make them collapse ,pushrods are straight.
 
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Old Dec 7, 2014 | 08:51 PM
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Originally Posted by clark-kentski
Yes I pulled the lifters and rollers were smooth ,noplay also pushed down on them and couldn't make them collapse ,pushrods are straight.
Solid or adjustable pushrods?
 
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Old Dec 7, 2014 | 09:18 PM
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Adjustable pushrods,i also checked motor mounts,compensator nut.
 
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Old Dec 7, 2014 | 10:03 PM
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Hiem adjuster on motor mount if it is rubber mounted or air cleaner backing plate. Next guess is the ?
 
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Old Dec 7, 2014 | 10:14 PM
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Really hard to tell from the video. Have you done the screwstick stethoscope thing to find out if it's a mechanical nock, and where it might be coming from? Could it be an exhause leak? Just thinkin' out loud..........
 

Last edited by NO PCKL; Dec 7, 2014 at 10:16 PM.
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Old Dec 7, 2014 | 10:17 PM
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does it go away when you load the motor going up a hill ????????
 
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Old Dec 7, 2014 | 10:20 PM
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My check of motor mount was to loosen the bolt going thru the bottom mount to make sure it was not bound,it was nice and free. The heim adjusters seem tight,dont know how to check.Air cleaner backplate I have had off and reinstalled.My first idea was in the rocker covers and I did have to relieve a few areas that had made contact.
 
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