Extreme Vibration
Thread Starter
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2nd Gear
Joined: Oct 2018
Posts: 6
Likes: 0
From: Maryland
Extreme Vibration
I have a 2001 Night Train with a Stage 2 big bore kit (all done at dealer). The bike only has about 27k miles. At the end of spring, I was getting my bike ready for the season. Started it up and let it run for a bit with some revving of the engine. I noticed a hard vibration in the handlebars (visible to the eye). I have a dakota digital speedo and noticed when revving above 3k, the LED display vibrated. I took the bike for a test ride and it had a hard vibration everywhere (to a point where my hands hurt from the vibration and I couldn't get it over 40mph without feeling like the bike was going to blow apart (headlight even came loose).
I did a little searching online which led me to a potential issue with the counter balanced engine. Out of my skillset, so I rode the bike to the dealer and explained the situation. They couldn't find any smoking gun for the problem and said the only way to check for a counter balance issue was to tear down the engine. The only thing they said they found was a chain tensioner guide assembly was broke. Other than that and a loose primary chain, the engine was in perfect order. The only other potential fix was to send out the flywheel? to re-weld and balance, but they didn't recommend it due to the cost.
$2500 later, the bike still feels like it is going to shake apart. Looking for some leads on what the issue could be. Timing? I don't feel like riding the bike is safe and find it hard to believe anything it could be wouldn't have been discovered during the tear down/rebuild.
I did a little searching online which led me to a potential issue with the counter balanced engine. Out of my skillset, so I rode the bike to the dealer and explained the situation. They couldn't find any smoking gun for the problem and said the only way to check for a counter balance issue was to tear down the engine. The only thing they said they found was a chain tensioner guide assembly was broke. Other than that and a loose primary chain, the engine was in perfect order. The only other potential fix was to send out the flywheel? to re-weld and balance, but they didn't recommend it due to the cost.
$2500 later, the bike still feels like it is going to shake apart. Looking for some leads on what the issue could be. Timing? I don't feel like riding the bike is safe and find it hard to believe anything it could be wouldn't have been discovered during the tear down/rebuild.
Thread Starter
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2nd Gear
Joined: Oct 2018
Posts: 6
Likes: 0
From: Maryland
For the revving, I just rolled the throttle, taking it up to about 2500-3000 rpm after it warmed up a bit.
The work they did was:
Clamp, hose $1.33
Clamp, hose, .500 ID $0.91
Oil Seal $3.05
Chain Tensioner Guide Assembly $15.93
Gasket Kit, Exhaust $8.95
Gasket Kit, Engine Complete $109.84
Retaining Ring $1.08
Kit-Cam Bearing Asy, TC88 $19.95
Kit-Cam Plate, Hybrid, w/HI $499.95
Gasket Kit, Inner Primary $67.90
Gastet, Primary Cover $31.50
Roller Bearing $30.74
Ball Bearing $13.41
High-Performance Sealant $13.95
Labor $1380.00
They also did a service.
The work they did was:
Clamp, hose $1.33
Clamp, hose, .500 ID $0.91
Oil Seal $3.05
Chain Tensioner Guide Assembly $15.93
Gasket Kit, Exhaust $8.95
Gasket Kit, Engine Complete $109.84
Retaining Ring $1.08
Kit-Cam Bearing Asy, TC88 $19.95
Kit-Cam Plate, Hybrid, w/HI $499.95
Gasket Kit, Inner Primary $67.90
Gastet, Primary Cover $31.50
Roller Bearing $30.74
Ball Bearing $13.41
High-Performance Sealant $13.95
Labor $1380.00
They also did a service.
Road Warrior
Joined: Mar 2014
Posts: 1,623
Likes: 698
From: nowhere
Why did they replace the cam plate? Excessive clearance on the output shaft? Wallowed out bearing?
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Banned
Joined: Sep 2009
Posts: 3,569
Likes: 624
From: deland,florida
most likely the sprocket on the pinion shaft for the balancers moved.seen it happen more than once (or twice).we pin there here when doing a build
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Sounds like the balancer chain sprocket has slipped on the pinion.
Once you dig down to it, simply time it, and tack weld.
That era B engine had noted issues with those, and have witnessed that on multiple occasions here.
Scott
Once you dig down to it, simply time it, and tack weld.
That era B engine had noted issues with those, and have witnessed that on multiple occasions here.
Scott
Grand HDF Member
Joined: Nov 2009
Posts: 4,315
Likes: 1,663
From: Tampa
For the revving, I just rolled the throttle, taking it up to about 2500-3000 rpm after it warmed up a bit.
The work they did was:
Clamp, hose $1.33
Clamp, hose, .500 ID $0.91
Oil Seal $3.05
Chain Tensioner Guide Assembly $15.93
Gasket Kit, Exhaust $8.95
Gasket Kit, Engine Complete $109.84
Retaining Ring $1.08
Kit-Cam Bearing Asy, TC88 $19.95
Kit-Cam Plate, Hybrid, w/HI $499.95
Gasket Kit, Inner Primary $67.90
Gastet, Primary Cover $31.50
Roller Bearing $30.74
Ball Bearing $13.41
High-Performance Sealant $13.95
Labor $1380.00
They also did a service.
The work they did was:
Clamp, hose $1.33
Clamp, hose, .500 ID $0.91
Oil Seal $3.05
Chain Tensioner Guide Assembly $15.93
Gasket Kit, Exhaust $8.95
Gasket Kit, Engine Complete $109.84
Retaining Ring $1.08
Kit-Cam Bearing Asy, TC88 $19.95
Kit-Cam Plate, Hybrid, w/HI $499.95
Gasket Kit, Inner Primary $67.90
Gastet, Primary Cover $31.50
Roller Bearing $30.74
Ball Bearing $13.41
High-Performance Sealant $13.95
Labor $1380.00
They also did a service.