vibrations
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Joined: Apr 2009
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From: forest city n.c.
last thing I did to bike? I took the oil cooler off and rerouted the lines back to the pump, change oil and filter, replace primary drive cover gasket and had the floorboard off on that side. shortly after that I had the vibration. I look at everything and everything looks fine. motor has 53000 miles, and i think the p.o. had the top end redone. here lately oil has been comming out of my breather and flowing down the block to where my mount is. not a lot of oil, but enough over a few days to soak the rubber on the mount. I wipe it off a few times. with oil cooler on bike I didn't have this problem. I guess oil temp. are higher now which may have induce this problem. the more I type here the more I think front mount. what'll you think. I hope it's not a cam bearing or anything else internal
Road Captain
Joined: Apr 2005
Posts: 535
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From: Highspire Pa
brwdarr,
Some things that helped with our 80" was using the evo 63805-80A , and not filling the oil tank much more than 1/2 between the fill and full line. This reduced the amount of oil that came out the breather.Be careful of the oil filter you use, many of the older evos did not do as well with the newer, more restrictive oil filters - even though the parts guy at the Harley dealer may tell you differently.
You may be able route a hose/tube from the breather to the ground. On our '90 flhtcu I ran it all the way back to the rear fender so it would drip behind the rear tire, you had to get down low to see it, most people never saw it. I used a combination of hose and flexible 1/4" tubing around the inside of the rear fender, under the right saddle bag mount etc. They sell valves similar to pcv valves that help, I had one called something like crank vent plus, it keeps gases from going back into the engine. So far with the Ultima engine I do not have any problems with the breather, it's a top breather and goes directly into the carb.
ON EDIT: A few years ago I was changing mufflers and installing new flange clamps and in the process one of the small bolts for the clamps I took off fell down between the primary and frame. The head of the bolt was just big enough to keep it from going through so it was stuck there and almost impossible to see. When I hit a certain rpm the bike would vibrate a lot. It took days to find that problem, ended up changing the exhaust system several times, but nothing I did would change it, then I was under the bike looking up at the rear of the primary and saw the little bolt barely hanging in there, it should have fell on the floor.. Now that I know where to look I check to make sure no bolts got caught there.
joe
.
Some things that helped with our 80" was using the evo 63805-80A , and not filling the oil tank much more than 1/2 between the fill and full line. This reduced the amount of oil that came out the breather.Be careful of the oil filter you use, many of the older evos did not do as well with the newer, more restrictive oil filters - even though the parts guy at the Harley dealer may tell you differently.
You may be able route a hose/tube from the breather to the ground. On our '90 flhtcu I ran it all the way back to the rear fender so it would drip behind the rear tire, you had to get down low to see it, most people never saw it. I used a combination of hose and flexible 1/4" tubing around the inside of the rear fender, under the right saddle bag mount etc. They sell valves similar to pcv valves that help, I had one called something like crank vent plus, it keeps gases from going back into the engine. So far with the Ultima engine I do not have any problems with the breather, it's a top breather and goes directly into the carb.
ON EDIT: A few years ago I was changing mufflers and installing new flange clamps and in the process one of the small bolts for the clamps I took off fell down between the primary and frame. The head of the bolt was just big enough to keep it from going through so it was stuck there and almost impossible to see. When I hit a certain rpm the bike would vibrate a lot. It took days to find that problem, ended up changing the exhaust system several times, but nothing I did would change it, then I was under the bike looking up at the rear of the primary and saw the little bolt barely hanging in there, it should have fell on the floor.. Now that I know where to look I check to make sure no bolts got caught there.
joe
.
Last edited by pajoe; Sep 13, 2009 at 05:38 PM.
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From: forest city n.c.
update: I change out the front mount with a new "drag specialities" mount. it was smoother at 3000 rpm and higher but still rattle my front faring something terrible at 2500-3000 rpm. I started putting my hand on everything with in reach to see what was vibrating and what wasn't, excluding the engine ha ha. I found to my amasement only the front faring, and crash bars was vibrating. sence the faring is attached to my crash bar I decided to check the bolts attaching the bars to see if they were loose. the bottom bolt on each side was tight but the top center bolt was missing. could this have been my problem all alone I was thinking. found a bolt to fit it and took out for a test. no more rattles. there is still vibration there, but it doesn't seam near as bad without the rattling faring. my floorboards have calm down also. I wish I have found this before I change the mount. oh well, maybe this new mount will soften in time and remove some more of the vibes. now to tackle all of my oil leaks. wish me luck.
Road Captain
Joined: Apr 2005
Posts: 535
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From: Highspire Pa
It took me several tries to find a front mount setup I liked after I switch motors. I have read some fellows will back off on how tight the bolt & nut going through the mount is secured, torquing it a little less allows a little more movement at idle which smooths it out while cruising. It doesn't take much change to affect it all, and you don't want it too loose, but a few ft pounds of torque may be just enough to tuned out little vibration.
Road Captain
Joined: Apr 2005
Posts: 535
Likes: 14
From: Highspire Pa
Let us know, I did read some posts where individuals claimed it helped - but when it comes to sensing vibrations,
it's easy to think something got better even if it did not.
joe
.
it's easy to think something got better even if it did not.
joe
.
Last edited by pajoe; Sep 18, 2009 at 10:11 AM.
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I think your both nuts. buy a Dyna and have some fun. Later BRO's
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