upper valve train tapping
3rd Gear
Joined: Feb 2012
Posts: 7
Likes: 0
From: Alabama
My 92 fxr has a bad tap even to a point of knocing hard on the top end front cylinder when it gets warm. my guess is lifter gone bad i put new seals on the original valves it has short open exhaust no baffle so i do get back fire when slowing down im actually scared to ride it cause it sounds like its going to sling the push rod i recently replaced the rings and top end gaskets thats about it i would hate to buy new lifters and that not be the problem as ive read in so many cases if anyone has found any more out i would highly appreciate the info cause im to the point of getting rid of it
Road Warrior
Joined: Oct 2006
Posts: 1,916
Likes: 0
From: San Antonio, Texas
I installed the Baisley spring and shimmed the rockers. Even with my high lift cams my motor is as quiet as any HD I have ridden. My worst tapping was from one of the front rockers which had .020 end play. I shimmed all of them to .003 to.005 when I installed the TP rocker boxes. This combo really fixed my ride. I can still hear some ticking with my 3/4 helmet but is hardly noticable. I give the TP boxes and shims most of the credit.
I have the standard valve train noise in my 07 Heritage. I can understand that. But what I have that is unique is a loud tapping upon deceleration after the engine is warmed up. It only happens when I'm ridding at a high speed and then suddenly release the throttle, like during shifting. I get a few very loud taps. If I pull in the clutch and rev up a couple of times it gets quieter until it is gone. It comes back after some more constant speed ridding.
I'm going to try and get a recording on my cell phone and post it. Maybe even take it to my dealer. On second thought, I'll just post it. My dealer thought is was worn cam chain tension shoes and charged me 800 bones to replace them. Noise is even worse now.
'luck.
I'm going to try and get a recording on my cell phone and post it. Maybe even take it to my dealer. On second thought, I'll just post it. My dealer thought is was worn cam chain tension shoes and charged me 800 bones to replace them. Noise is even worse now.
'luck.
Road Master
Joined: Nov 2006
Posts: 902
Likes: 0
From: pennsylvania
tap tap
my 07 tapped and my 2010 103 taps. i had a 1340 that actually tapped a tune when you throttled it right. Each bike ran great even into the 60,000 mi range and there after. Unless it startes to effect the performance or you start humming tunes to it, ride it long and hard. If it's gonna break it will.Until then ride
Tourer
Joined: Oct 2006
Posts: 295
Likes: 12
From:
my 07 tapped and my 2010 103 taps. i had a 1340 that actually tapped a tune when you throttled it right. Each bike ran great even into the 60,000 mi range and there after. Unless it startes to effect the performance or you start humming tunes to it, ride it long and hard. If it's gonna break it will.Until then ride
Extreme HDF Member
Joined: Jun 2007
Posts: 12,653
Likes: 18
From: Broken Arrow, Oklahoma
Anyone put a thin layer of high temp sound deadening mat on the inside of the rocker cover to see if that will quieten it? Just an idea for the brave and adventurous. 
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Tourer
Joined: Jul 2011
Posts: 464
Likes: 0
From: Weymouth MA
I just changed the other day to Mobil 1 syn and that tick got a lot quieter. I thought it maybe a lifter. But I guess these motors have self adjusting lifters.
Cruiser
Joined: Feb 2012
Posts: 155
Likes: 4
From: Kissimmee
Wow, didn't expect to find this many ticking hogs when I did the search. My bike has always had a slight tick here and there, mostly around 2000 rpm.
Now that I did a Andrews 48H cam swap with the S&S adjustables it seems to be noticably louder, but the motor runs like a scalded dog without any miss or complaining. Everything was adjusted to the letter and double checked, loctite, etc.
It's almost as if the higher lift and duration work the crap factory lifters too hard and they can't handle the load at steady engine speeds during a cruise.
Jump on it and the revs come up and it goes away, release the throttle and it is quiet, until it gets close to 2000, tick tick tick tick tick....gone again by 1800.
I'm either going to try some hot dog lifters, or...Once it blows up I guess i'll know what it was?
Now that I did a Andrews 48H cam swap with the S&S adjustables it seems to be noticably louder, but the motor runs like a scalded dog without any miss or complaining. Everything was adjusted to the letter and double checked, loctite, etc.
It's almost as if the higher lift and duration work the crap factory lifters too hard and they can't handle the load at steady engine speeds during a cruise.
Jump on it and the revs come up and it goes away, release the throttle and it is quiet, until it gets close to 2000, tick tick tick tick tick....gone again by 1800.
I'm either going to try some hot dog lifters, or...Once it blows up I guess i'll know what it was?