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Old 04-26-2014, 08:55 PM   #1
rebennett04
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Unhappy 91 yamaha g8 crank journal worn

any idea how long it might last making that tapping noise
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Old 04-26-2014, 08:59 PM   #2
1989Marathon
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Default Re: 91 yamaha g8 crank journal worn

How do you know the crank journal is worn? If it is, it could last a long time. It will just be a nuisance to listen to.
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Old 04-26-2014, 09:04 PM   #3
rebennett04
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Default Re: 91 yamaha g8 crank journal worn

checked with a mic .10 undersized
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Old 04-26-2014, 09:08 PM   #4
1989Marathon
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Default Re: 91 yamaha g8 crank journal worn

I forgot to welcome you to BGW. WELCOME!

This is the right place to find parts for your cart. Check out the for-sale section, or start a post there asking for the part. These guys are awesome. I think you need a few more posts before you can access that section though. Post away.
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Old 04-26-2014, 09:09 PM   #5
rebennett04
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Default Re: 91 yamaha g8 crank journal worn

this old yamaha has been one thing after another and all in runs great
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Old 04-26-2014, 09:11 PM   #6
rebennett04
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Default Re: 91 yamaha g8 crank journal worn

got a new undersize bearing on order just not sure it will take care of all the slap noise
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Old 04-26-2014, 09:12 PM   #7
1989Marathon
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Default Re: 91 yamaha g8 crank journal worn

How do the piston skirts look?
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Old 04-26-2014, 09:15 PM   #8
rebennett04
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Default Re: 91 yamaha g8 crank journal worn

this thing was road hard when i bought it balancer journals are long gone egg shaped we thought it was clutch noise read some forums and see a lot of guys remove the cranshaft balancer as i did and then found this problem
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Old 04-26-2014, 09:16 PM   #9
1989Marathon
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Default Re: 91 yamaha g8 crank journal worn

Have you checked piston and bore dimensions?
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Old 04-26-2014, 09:16 PM   #10
rebennett04
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Default Re: 91 yamaha g8 crank journal worn

piston skirts are fine honed the cylinder put new rings in all bearings are fine 155 is compression
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