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z2 750 crank 31 Jan 2015 10:47 #660230

  • Mcdroid
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Unless you already have managed to find a Z2 crank, they are difficult to source in North America. :)
Michael
Alvin, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A

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z2 750 crank 31 Jan 2015 10:57 #660231

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THE QUESTION WAS WHY WOULD YOU PUT A Z2 CRANK IN A Z1 AND MY SPECS WAS FOR YOUR BORE NOT A Z2 750 .SHAVING OFF DOES NOT INCREASE STROKE SO IF YOU ARE RUNNING 70 MM PISTONS THAT COMES TO 892.9 CC,S
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.

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z2 750 crank 31 Jan 2015 10:59 #660232

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I had a complete Z2 engine in the 80's. I had to have the sleeves bored out to 70mm. Clupper racing complained about how much metal they had to take out. Still rust stains in the walls from sitting in the weather. My 903's were shot. I din't know at that time the stroke was different, I just weighed them and put in the lighter one.
Steve
:whistle:

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z2 750 crank 31 Jan 2015 10:59 #660233

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where did you get this z2 crank from, being the bike was only for the jap market?
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.

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z2 750 crank 31 Jan 2015 11:00 #660234

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the z2 750 had longer rods as well
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.

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z2 750 crank 31 Jan 2015 11:01 #660235

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kawi810 wrote: THE QUESTION WAS WHY WOULD YOU PUT A Z2 CRANK IN A Z1 AND MY SPECS WAS FOR YOUR BORE NOT A Z2 750 .SHAVING OFF DOES NOT INCREASE STROKE SO IF YOU ARE RUNNING 70 MM PISTONS THAT COMES TO 892.9 CC,S


I don't agree. You are right about one thing, shaving will increase compression, not the stroke. The rest is just semantics.
Steve

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Last edit: by SWest.

z2 750 crank 31 Jan 2015 11:27 #660239

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stroke is stroke that defines an engine size always was and always will be i don,t know where you learned basic math from.you are are running 892.9 cc engine CORRECT if not.chances are you do not have a Z2 crank :(
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.

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Last edit: by kawi810.

z2 750 crank 31 Jan 2015 11:34 #660240

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This isn't the first time for this.
Some people don't argue for a reason, they simply argue.
Have a nice day. :woohoo:

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z2 750 crank 31 Jan 2015 11:52 #660243

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no just separating FACT from URBAN LEGENDS :evil:
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.

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z2 750 crank 31 Jan 2015 12:03 #660245

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You have been trying to pick a fight and lost, called me a liar and call it uncovering urban legends and showed yourself. You are a legend in your own mind. Enjoy it. B)
Steve

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z2 750 crank 31 Jan 2015 15:34 #660257

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When I worked in the local Kawasaki shop there were 2 yes 2 legit 750 Z-2s in the area I see no reason to use the Z-2 crank unless you were in a racing class that req a smaller displacement.
1984 750 Turbo

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z2 750 crank 31 Jan 2015 15:46 #660259

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If you have a Z2 block, I'd be interested in that, Need one for a Zephyr build

Les Holt

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Last edit: by les holt.
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