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Wagman2000 |
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Wagman2000 Derestricted Danger
Joined: 10 Jan 2019 Karma :
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Posted: 13:44 - 10 Jan 2019 Post subject: Kawasaki ZXR400 Piston Pop Problem... |
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Hey!
My Kawasaki ZXR 400L snapped one of the heads off an inlet valve due to, what I think was the inlet camshaft been in constant contact with the followers as they are heavily worn. All because I had neglected to check the clearances...
The stem has clattered the top of the piston two or three times before the engine inevitably stalled, it was at tick over at the time so it wasn’t totally destructive.
I’ve had it to bits and I think I have been lucky in a way as the damage isn’t too bad, the Con rods are straight and true as are the other valves. The camshaft hasn’t worn either as the hardened surface won over the follower’s surface.
I have replaced the followers and the broken valve.
The problem I have is the piston. I thought at first I could dress the light damage out and reuse it. I had second thoughts as I didn’t know if the top of the piston is hardened and dressing the damage may compromise the integrity of the piston? A NoS piston is not cheap. Any thoughts?
Pictures on Pinterest here...
https://pin.it/2cam62aqmea4u3 ____________________ 2001 Kawasaki ZXR 400L9
1979 Yamaha XS Special |
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redeem ouzzer |
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redeem ouzzer World Chat Champion
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Fisty |
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Fisty Super Spammer
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Wagman2000 |
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Wagman2000 Derestricted Danger
Joined: 10 Jan 2019 Karma :
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Posted: 14:40 - 10 Jan 2019 Post subject: |
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I thought they would be harder than aluminium but now I think about it it does make sense.
The engine has only done 11,000 miles, I’m loath to replace it for something that has higher miles and an unknown history that I would have to strip and check anyway. Plus I already have new parts to sort this motor except the piston.
I’m cleaning it all up next week and I’ll post pics of it all after it’s degreased.
I’ll start checking for the availability of a new piston now though ____________________ 2001 Kawasaki ZXR 400L9
1979 Yamaha XS Special |
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Wagman2000 |
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Wagman2000 Derestricted Danger
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Fisty |
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Fisty Super Spammer
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Fisty |
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Fisty Super Spammer
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Sister Sledge |
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Sister Sledge World Chat Champion
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MarJay |
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MarJay But it's British!
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Fisty |
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redeem ouzzer |
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redeem ouzzer World Chat Champion
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Posted: 16:37 - 10 Jan 2019 Post subject: |
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____________________ Be a REAL MAN! |
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Fisty |
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Fisty Super Spammer
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Posted: 16:43 - 10 Jan 2019 Post subject: |
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So, mileage adds up to what I am saying.
https://i.imgur.com/uavROkK.png?2
I think that engine has a lot more miles on than you think, I still could be wrong but that plate rings a bell. I am sure somewhere I have a picture of it.
I sold it to a guy in Sheffield, are you aroud that way? Do you know the history of it at all? ____________________ Quietly and consistently taking the piss.
TL1000R | Hayabusa | ZXR400 | TL1000S | Bandit 400 V
Fatter and faster than Fret |
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Sister Sledge |
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Sister Sledge World Chat Champion
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Fisty |
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Riejufixing |
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Riejufixing World Chat Champion
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Wagman2000 |
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Wagman2000 Derestricted Danger
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Wagman2000 |
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Wagman2000 Derestricted Danger
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Wagman2000 |
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Wagman2000 Derestricted Danger
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Fisty |
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Wagman2000 |
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Wagman2000 Derestricted Danger
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Posted: 23:07 - 10 Jan 2019 Post subject: |
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After today’s chat it’ll be getting a good coat of looking at
It’s going to NI in May if it kills me! Which by the sound of it, it might... ____________________ 2001 Kawasaki ZXR 400L9
1979 Yamaha XS Special |
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Sister Sledge |
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Sister Sledge World Chat Champion
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Wagman2000 |
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Wagman2000 |
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Wagman2000 Derestricted Danger
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Old Thread Alert!
The last post was made 5 years, 147 days ago. Instead of replying here, would creating a new thread be more useful? |
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