Author Topic: Is this piston good?  (Read 2106 times)

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Offline JustinSB

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Is this piston good?
« on: September 16, 2009, 06:28:26 PM »
It looked to me like it started to seize, but I thought it might just be carbon because it is in the areas which line up with the exhaust ports. It is a cast piston, which bothers me. Any comments are appreciated. Thanks!







Offline cyclepsych0

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Re: Is this piston good?
« Reply #1 on: September 16, 2009, 06:49:21 PM »
From the photos, the scarring seems excessive... If it were my bike I'd definitely replace the piston and check the nikasil coating for any flaking. 8-)

Offline KX500freak

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Re: Is this piston good?
« Reply #2 on: September 16, 2009, 10:43:08 PM »
yes same here ,and replace piston earlier next time ,this one seems almost polished :P
Dutch Team Green 91-94-01 KX500

Offline JustinSB

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Re: Is this piston good?
« Reply #3 on: September 17, 2009, 04:24:37 AM »
A new one is going in. I just got the bike. I'm glad I caught it before it was worse and did cylinder damage or disintegrated.

Offline flyin9

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Re: Is this piston good?
« Reply #4 on: September 17, 2009, 05:31:54 AM »
were your rings welded in the gap or do they move freely? looks like you KIPS are very gummed up or not operating correctly, or both. JMO
Jared

Offline kaw rider

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Re: Is this piston good?
« Reply #5 on: September 17, 2009, 03:56:42 PM »
you may what to look at that one stud, looks alittle rusty. Notice how the burnt oil on exhaust side of piston only. That tells you something.

Offline JustinSB

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Re: Is this piston good?
« Reply #6 on: September 17, 2009, 05:11:34 PM »
What does the oil on the exhaust side only tell me?