copper shavings in oil ?


7 replies to this topic
  • steashy27

Posted August 31, 2004 - 12:57 PM

#1

Hi all ,
have bought 00' 426. The last 3 oil changes have
found copper coloured shavings along with the usual metal shavings as per previous postings .Has any one got any ideas .

Have taken off head and cylinder to check crank .NO PLAY and within tolerances .

cheers Steashy27

  • DrThumper

Posted August 31, 2004 - 01:24 PM

#2

Oil drain bolt washer may be made of copper (or brass), as well as the frame tank drain bolt washer....other than that I can't think of anything else made of copper/brass? Valve guide/seals? :devil:
Thats a good one....? :thumbsup:

  • yzf450jack

Posted August 31, 2004 - 03:31 PM

#3

The only thing that I can think of in the motor is the brass bushing in the clutch basket I would look in the clutch Most stuff you find in your oil is from the clutch

  • sirthumpalot

Posted August 31, 2004 - 06:37 PM

#4

The only thing that I can think of in the motor is the brass bushing in the clutch basket I would look in the clutch Most stuff you find in your oil is from the clutch


The clutch would be my first guess too. There is usually a brass bushing attached to the basket. Take it apart and check before something lets go.

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  • RoosterJ

Posted August 31, 2004 - 06:43 PM

#5

Stators have alot of copper in them, it might be a good idea to pull the left cover and take a peek.

  • Davidyz450

Posted September 01, 2004 - 06:55 AM

#6

I'm not sure about yamaha engines, but in car engines when the crank or rod bearings start to go out, there can be copper looking shavings in the oil!

  • stainlessTT

Posted September 01, 2004 - 04:42 PM

#7

I'm not sure about yamaha engines, but in car engines when the crank or rod bearings start to go out, there can be copper looking shavings in the oil!


Thats what I was going to say also. I recently bought a remaned 5.0 V8 from S&S Engine. About 2 week after driving it the motor started knocking like crazy at higher rpms. when I took it out of my jeep to send it back there was gold glitter like shaving every where.

As far as dirt bike motors go :thumbsup:

let us know if you find the problem :devil:

  • MXof21

Posted September 02, 2004 - 03:21 AM

#8

I have heard that some bearings are plated brass, when the plating wears down you will start seeing brass in your oil filter.





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