Evo engine tapping

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Apr 4, 2018 | 08:32 PM

muaymendez1

Thread Starter

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Joined: Nov 2010

Posts: 24

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From: Rahway Nj

Evo engine tapping

I'm sure this has been discussed here before. I've done searches on YouTube and can't find the exact issue I have. There is a tapping sound which is noticeable when the engine is hot. At first I thought it was a vibration from the windshield or other plastic. Not metal to metal but definitely gets faster as I Rev the engine More. Pronounced under load at high rpm.
I've checked and replaced exhaust gaskets, installed rocker lockers, checked torque on nearly everything.
No leaks, no loss of power. Just annoying I guess as I tend to think something is wrong with the engine. I our chased this bike with 85k miles on it and was told the motor was redone. From the looks of the internals and fresh gaskets there's no reason for me not to believe it.
The sound is not coming up on video.
Anyone have this same noise.
My best description of it is like a peice of plastic vibrating against another peice.

Apr 5, 2018 | 03:05 PM

Mattbastard

Grand HDF Member

Joined: Nov 2009

Posts: 4,315

Likes: 1,663

From: Tampa

In the typical Harley fashion, I'm going to recommend a louder exhaust.

Seriously though, are you sure its even an issue? Harley's are a bit more "mechanical" sounding than other motors.

Apr 5, 2018 | 03:55 PM

Lunchboxx

Road Master

Joined: Feb 2015

Posts: 1,040

Likes: 203

From: Susanville CA

I had an extremely annoying tap/knock/ noise. Turned out its my clutch basket The fingers on the clutch basket have grooves worn into them from the ears on the clutch plates. I have not installed my new clutch set up yet. But Hopefully that takes care of the problem. I went thru and adjusted my push rood and changed lifters and put in rocker lockers and everything and none of it made the noise go away till finally I started the bike with the primary cover off and it was louder, so I jsut guess it had to be that so I removed the whole clutch set up. Put it on the bench and tore into it.

Apr 5, 2018 | 08:42 PM

muaymendez1

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Joined: Nov 2010

Posts: 24

Likes: 2

From: Rahway Nj

Just gonna live with it

Sheet watching countless videos today I think I noticed that it is just regular valve train noise. Every video I watched with problems sounded way worse than what I have. No biggie.

Apr 6, 2018 | 05:58 AM

Hillsidecycle.com

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Service bulletin from HD advised to "check and/or replace" lifters at 25,000 miles.
Not saying that is your cure, just a suggestion.
Scott

Apr 6, 2018 | 10:55 AM

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

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From: Bedford UK

We can't easily hear or diagnose noises in here! Better to find a local indy who can see and **** an ear at your bike and offer suggestions. He should be able, for example, to diagnose if Scott's suggestion of lifters is right.

Apr 6, 2018 | 08:10 PM

98hotrodfatboy

Seasoned HDF Member

Joined: Mar 2010

Posts: 21,019

Likes: 7,547

From: Poolville

The Evo valve trains are known to be a bit pronounced especially around 2800 rpm on a lite tip in on the throttle... Rocker Lockers will not make any change in an evo... However adjustable pushrods will. Setting them to .140".... Evo's tick to a certain degree..... Not an issue...