Kawasaki Sportsbike Riders Club - Australia - Online Forum

I spent 800 on pistons rings valves rebore gaskets- a rebuild above the crank only, a few months ago.
Found a zzr motor at mwb wreckers for 700 yesterday. I'm not buying it now. There's a motor for auction on ebay too.

If you decide to put it back together yourself, I too would recommend checking ...

Thanks for posting guys.
I agree it is not a normal problem. The seats are not damaged, but the valve face is worn away.
We got onto some stainless valve blanks within spec, so we'll try that.

I accidentally posted this in zzr forum, and not getting far.

My 17yr old son bought a '96(?) blue black GPZ250. Within three week it slowly became impossible to start.
Inlet clearances had closed to the point where no adjustment was left.
Disassembled it. The intake valves had worn their contact ...

Have just been Googling for a head. No luck. Found a zzr motor, but that's an expensive fix.
Anyone got a '96 or close, gpz250 spare head on a wreck or something?

I doubt "upper cylinder lubricant" would make that much difference. With or without, 2000k is a very short life.
As far as I know valve seats are refaced originals.
I would not expect an honest answer about its history from the guy we bought it off as we feel he knew this was happening.
Saw him at ...

I've put this in the wrong forum. great start. Can a Mod shift it to GPZ please?

My 17yr old son bought a '96(?) blue black GPZ250. Within three week it slowly became impossible to start.
Inlet clearances had closed to the point where no adjustment was left.
Disassembled it. The intake valves had ...