Noisy Valve Train on NEW 103"
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Novice
Joined: May 2010
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From: Indiana
Noisy Valve Train on NEW 103"
My less that 3500 mile 2011 Ultra Limited started sounding noticeably louder, after the 1000 mile service, in the upper engine/rocker box area when riding at 2500 rpm and above. I was not too alarmed until I noticed a few seconds of loud hammering when the engine was restarted after shutting the bike off for a 1/2 hour or so. This hammering does not happen when the engine is started cold, like after sitting overnight. The service manager heard the hammering, said it was not normal and that the tappets may be be bleeding down. That is exactly what it sounds like to me too. Except not when it is first started cold. He stated that these tappets are the same ones used in Sportsters and have been replaced by a different part#. If true, and the dealer knows about this issue, So does the Motor company!!! Why no Recall before the thing wears out or comes apart on some God Forsaken stretch of Highway?? The bike is in the shop today. Waiting to hear what they find. 
Last edited by Old Bugger; Jun 27, 2011 at 09:36 AM. Reason: spelling
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Joined: Feb 2010
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From: Jayhawk Country
Keep us informed. I have the same bike with 600 miles. Have not noticed anything abnormal yet. Not unlike the Mo CO to not issue a recall. Seems that they would rather have the issue resolved on a one on one basis than admit they did something wrong.
Road Warrior
Joined: Jun 2009
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From: NYC
we call this the crank bang issue. some folks report the problem resolved after going to high CCA batteries. Others report the problem solved by replace the compensator. I have noticed that the crank bang issue happens more when using 20W50 as opposed to 10W40 on my bike.
Road Captain
Joined: Nov 2010
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we call this the crank bang issue. some folks report the problem resolved after going to high CCA batteries. Others report the problem solved by replace the compensator. I have noticed that the crank bang issue happens more when using 20W50 as opposed to 10W40 on my bike.
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Joined: Apr 2008
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we call this the crank bang issue. some folks report the problem resolved after going to high CCA batteries. Others report the problem solved by replace the compensator. I have noticed that the crank bang issue happens more when using 20W50 as opposed to 10W40 on my bike.
Mark
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Joined: May 2010
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From: Indiana
Sorry Speakerfritz. this issue has nothing to do with the Compensator or Battery. Both noises emanate way after the engine is running. some friends I know have the Crank Bang problem. Mine ain't it, but thanks anyway for your input.
Road Warrior
Joined: Jun 2007
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From: Here
we call this the crank bang issue. some folks report the problem resolved after going to high CCA batteries. Others report the problem solved by replace the compensator. I have noticed that the crank bang issue happens more when using 20W50 as opposed to 10W40 on my bike.
Not to de-rail this thread, but you won't use "automotive" 20W50, but you will or have used "motorcycle" 10W40 (saw that in the very long sig statement you had earlier but thought I mis-read it)? I'm not sure if it's possible, but try to help me understand that one.
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From: Western Illinois, land of bad roads, and corrupt politicians
My less that 3500 mile 2011 Ultra Limited started sounding noticeably louder, after the 1000 mile service, in the upper engine/rocker box area when riding at 2500 rpm and above. I was not too alarmed until I noticed a few seconds of loud hammering when the engine was restarted after shutting the bike off for a 1/2 hour or so. This hammering does not happen when the engine is started cold, like after sitting overnight. The service manager heard the hammering, said it was not normal and that the tappets may be be bleeding down. That is exactly what it sounds like to me too. Except not when it is first started cold. He stated that these tappets are the same ones used in Sportsters and have been replaced by a different part#. If true, and the dealer knows about this issue, So does the Motor company!!! Why no Recall before the thing wears out or comes apart on some God Forsaken stretch of Highway?? The bike is in the shop today. Waiting to hear what they find.
You say it got louder after the 1000 mile service........ SYN-3 by any chance? Syn-3 is like water compared to what came in your bike from the factory, and is therefore noisier. In my experience Mobile-1 runs a little quieter, and a little cooler.
Sportster tappets are not a bad thing. Sportsters run at higher RPMs.... so those tappets will handle touring RPMs with ease.
Last edited by shooter5074; Jun 27, 2011 at 02:45 PM.
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