going oversize

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Stock OEM oversize pistons will retain the original compression ratio.

Are they "pocketed" or slightly shorter to achieve this?

The dome will be fractionally smaller.

Well they aren't responding so I don't think they have the pistons.

Is there any chance a 650 piston would work as an oversize on my 305? That's a 62 mm also, but I imagine I would run into problems elsewhere with those...

Edit: Bah. Look like those take 15mm pins and the 305 is 14. I don't think there's any way to fix that.

Edit 2: Nah, never mind, there's too much else to consider that is way above my pay grade. I must admit defeat and stop wasting time trying to get this anchor afloat again.

Check out this complete 4,700 mile e-bay engine. With that compression you would be taking some risk. But could be valves stuck partly open.
"1986 Kawasaki KZ305B KM265-1. engine motor low compression"

Yeah I've looked at that one and others several times and been tempted but they all seem too risky! I sank so much into this last year that I'm wary of throwing away more. However if I can't find a project bike before winter then I might as well gamble on something...

Electric conversion?

https://www.[ebay].com/itm/224913718561

I saw a Yamaha DT175 that was converted using this kit.

EDIT: I've also been kicking around the idea of putting a Predator engine and centrifugal clutch in a frame to make a pit bike type thing. Of course, these options might not make sense if you want your KZ to be street-legal.

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Electric conversion?

https://www.[ebay].com/itm/224913718561

I saw a Yamaha DT175 that was converted using this kit.

EDIT: I've also been kicking around the idea of putting a Predator engine and centrifugal clutch in a frame to make a pit bike type thing. Of course, these options might not make sense if you want your KZ to be street-legal.
 

I loved the electric idea! Until I saw the price haha. No if I had that much money I'd buy a running KZ, but I'm scouring the area for one that I can get cheap and make run.

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I loved the electric idea! Until I saw the price haha. No if I had that much money I'd buy a running KZ, but I'm scouring the area for one that I can get cheap and make run.
 

Good luck in your search. I contacted a seller on CL about a running, clean titled KZ440, but I couldn't get there during the week and someone else bought it.

$800

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wrote:

I loved the electric idea! Until I saw the price haha. No if I had that much money I'd buy a running KZ, but I'm scouring the area for one that I can get cheap and make run.

 

Good luck in your search. I contacted a seller on CL about a running, clean titled KZ440, but I couldn't get there during the week and someone else bought it.

$800

And I've been going back and forth with a guy who had a non-running 440 he's been trying to sell since June, and as soon as I said I'm interested and want to come get it he stopped replying.

D'oh