How I made my top end noise disappear.

Discussion in 'General Harley Davidson Topic' started by SoonerSoftail, Feb 15, 2011.

  1. SoonerSoftail

    SoonerSoftail Active Member

    Many of us have had the stock gas cap rattle issue. There's all kinds of threads on all the forums about how to fix that. Well, here's a twist. I installed the cam plate upgrade from Herko a few months ago. Ran great but seemed to have more valve train noise coming from the rocker boxes. Lengthened the pushrods a 1/2 turn and that seemed to help some. Still sounded more like my old Sporty than a Twin Cam though. Especially at cruising speed. Very quiet at idle. Sunday it occurred to me that at the same time I did the cams I installed chrome lower air deflectors. The ones that look like fangs. I tapped on them and they rattled a bit. So I took the whole windshield/deflector set up off and did away with the quick release and bolted everything to the trees solidly. Rode to work Monday morning and didn't hear a sound. The engine is every bit as quiet on the top end as it ever was. It was the deflector/windshield mounts that were making noise.
  2. HDDon

    HDDon Experienced Member Contributor Retired Moderators

    Thanks Sooner. I don't know how old you are but it seems the older I get the harder it is to determine where the noise is coming from.
  3. backinthesaddle

    backinthesaddle Member

    I use ear plugs. they work great with wives and girlfriends. They are a very inexpensive fix.
  4. SoonerSoftail

    SoonerSoftail Active Member

    I'm 52 and ain't it the truth. Lots of other things are harder to do too!
  5. ultra...good

    ultra...good Banned

    :hii Ear plugs...Here I was gonna say that I put louder pipes on my bike, solved all of the noise issues. I could have killed 2 birds with one stone, and saved about $300.00. Will ear plugs work for the mother-inlaw too.......She doesn't have to be within ear shot to annoy me it seems.
  6. drbillk

    drbillk Banned

    I had a similar experience. Heard this rattle from time to time. Couldn't figure out where it was coming from. When I'd lean left it sounded like it came from the left. Lean right, sounded like it was over there. No matter where I listened, I could hear the rattle while riding. At idle, smooth and quiet. Eventually found the rattle... it was the sun visor on my helmet. Yeah, it's gone now. :newsmile040:
  7. Iceman24

    Iceman24 Well-Known Member

    Gotta hate those annoying rattles - way to be persistent & discover/fix the problem. Sometimes I just blame my age & tinnitus...;)
  8. so cal hoss

    so cal hoss Member

    I had a similar vibration on my Fat Boy. Drove me and the dealer nuts trying to duplicate the noise in the shop. One day while riding down the road I stood on the floorboards and started searching for the culprit. It turned out to be the headlight ring. I replaced it with one off of e-bay and finally after 2 years the noise is gone.

    NEWHD74FAN Experienced Member Retired Moderators

    Those annoying rattles and squeaks...glad you got it sorted. All of us remember that "last one"...mine was a loose baffle...had to gently tap around the exhaust system, and found it to be the rear most one...changed the fasteners to stainless, added a lock washer...GONE...YAY! The best sound is the clear *Potato*Potato*Potato* exhaust note, uninterupted by stray intermittant sounds...! AND the satisfaction of finding them if they appear! :)
  10. gator508

    gator508 Senior Member

    The best sound is the clear *Potato*Potato*Potato* exhaust note, uninterupted by stray intermittant sounds...! AND the satisfaction of finding them if they appear!

    Is that potato or pototo, LOL!