metal chunks - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 05-13-2016, 03:52 PM Thread Starter
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Oil contaminents

I'm gonna have to tear down one of my VN's I have metal chunks in the oil. Looks like pot metal such as the case. Dark colored. IDK where it could be coming from. Little bb size chunks in the last 3 flushes at 100 miles per interval. I have bright shavings, but the dark chunks are the mystery.

There's a faint knock occasionally from the front of the engine. I guess I'll know when i get in there. What could be making little chunks? I'm trying to figure out whats tearing itself up in there that's not bright and shiny. There have been no real markings to identify the metal. I saw a stamped grid pattern on one chunk out of 10.


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Last edited by One1; 05-20-2016 at 06:46 PM.
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post #2 of 5 (permalink) Old 05-13-2016, 04:31 PM
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Originally Posted by One1 View Post
I'm gonna have to tear down one of my VN's I have metal chunks in the oil. Looks like pot metal such as the case. Dark colored. IDK where it could be coming from. Little bb size chunks in the last 3 flushes at 100 miles per interval. I have bright shavings, but the dark chunks are the mystery.

There's a faint knock occasionally from the front of the engine. I guess I'll know when i get in there. What could be making little chunks? I'm trying to figure out whats tearing itself up in there that's not bright and shiny. There have been no real markings to identify the metal. I saw a stamped grid pattern on one chunk out of 10.
My thoughts.....
Engine casing aluminum.
My advice....
.....If you intend to rebuild this engine....DO NOT run it anymore !
Used engine's are available for $400. -/+ ......
Note; I do have a Engine available for parts....Engine casings.
....Just sayin'............

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Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #3 of 5 (permalink) Old 05-14-2016, 01:45 AM
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Originally Posted by WilliamTech View Post
My thoughts.....
Engine casing aluminum.
My advice....
.....If you intend to rebuild this engine....DO NOT run it anymore !
Used engine's are available for $400. -/+ ......
Note; I do have a Engine available for parts....Engine casings.
....Just sayin'............
Yup. Are the little BB sized chunks rubber. My best guess is that the rubber and plastic balancers are hard and disintegrating and the shaft is chewing a hole in the front of the engine case.

Gordon

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post #4 of 5 (permalink) Old 05-14-2016, 04:00 PM
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Quote:
Originally Posted by OlHossCanada View Post
Yup. Are the little BB sized chunks rubber. My best guess is that the rubber and plastic balancers are hard and disintegrating and the shaft is chewing a hole in the front of the engine case.
X2 on that

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post #5 of 5 (permalink) Old 05-18-2016, 11:11 PM Thread Starter
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Quote:
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Metal chunks
Quote:
Originally Posted by OlHossCanada View Post
Yup. Are the little BB sized chunks rubber.
no...... metal


1981 KZ750
1988 Vulcan VN750 (red)
2005 Vulcan VN750 (silver)
(2) 1994 Vulcan VN750 (red)

Engineering solutions for the VN750 Community.
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