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Re:Source of Engine noise (1 viewing) (1) Guest
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TOPIC: Re:Source of Engine noise
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Rayjay (User)
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Gender: Male Location: New Jersey Birthdate: 2010-12-01
Re:Source of Engine noise 2 Years, 7 Months ago  
A wrist pin or connecting rod would make a loud clunking sound all the time, especially under loading.

In the Army I drove a 5 ton tactical semi that had a bad wrist pin and it clunked all the time until it let go and came through the block wall. (The mechanic wouldn't believe me that something was wrong inside.)

The cylinders sometimes make a "harmonic noise" that makes a clunking sound too. Go figure.

I'm running Amsoil too with 42,500 miles and get noise like that when she really warms up or if I run her in a higher gear at lower RPMs (borderline lugging).

Try keeping her in a lower gear with RPMs up more.

IMHO these bikes would very rarely have a bad wrist pin or rod bearing.
 
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Source of Engine noise
sailrider 2009/07/03 13:27
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ironman 2009/07/03 13:37
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WUWU20 2009/07/03 13:42
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WUWU20 2009/07/03 13:41
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DocShadow 2009/07/03 13:45
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huskerbob 2009/07/03 14:07
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sailrider 2009/07/03 16:54
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Rayjay 2009/07/04 09:36
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Duff 2010/07/09 09:30
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cartersta 2010/07/09 10:13
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cartersta 2010/07/09 10:18
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Boatmark 2010/07/09 10:29
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