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1976 Kz 900 A4 10 Aug 2021 18:58 #853542

  • MauiZ1
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I’m not very familiar with the Z1 engine. I know it’s rare a CB750 crankshaft goes bad unless it’s really abused. Do the Z1 cranks fail often? With all rollers except for wrist pins I would think if it had oil it’s all good. The two strokes didn’t need much oil to keep the crank happy.

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1976 Kz 900 A4 22 Aug 2021 11:13 #854189

  • Mikaw
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Perusing Facebook marketplace just really paid off KINDA. A 4 hour round trip and $130.00 YES $130.00, just scored me a Z1B 900 engine. Plan was to buy it regardless of condition hoping I’d get at least a good crankshaft out of it. I have to say if this possible I’m disappointed. Turns out the engine is a fresh (unknown years ago) build never fired. Can you be disappointed finding such a deal. Maybe I’m pleasantly disappointed. The goal was to get a crankshaft for this project. So now I wait till the generous member returns home and I can get my crank.

Engine is higher compression pistons. In the photos you can see sharpie numbers 2&3 on the pistons, the fresh cross hatch, ported heads, band new B8eS plugs, and Yoshimura “poppy” cams. I faintly see a B stamped on the cam ends. No clearance ground into either the lifter bucket nor cam cover areas. 
















1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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1976 Kz 900 A4 22 Aug 2021 14:52 #854193

  • 750 R1
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Wow, that's a great score...!!!  Looking for another frame yet ?   

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1976 Kz 900 A4 22 Aug 2021 15:00 #854196

  • hardrockminer
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Wow!
I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.
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1976 Kz 900 A4 22 Aug 2021 15:11 #854198

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Wow, that's a great score...!!!  Looking for another frame yet ?   

I have a ‘77 Kz1000 LTD bare frame already powder coated. 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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1976 Kz 900 A4 22 Aug 2021 15:13 #854199

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Wow!

I know but I still need a crankshaft. I love what I tripped over, but I really want this project completed. 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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1976 Kz 900 A4 23 Aug 2021 08:24 #854218

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Great find!!
Get a frame and go for it

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1976 Kz 900 A4 23 Aug 2021 08:37 #854219

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It'd probably be a couple hundred in gaskets to put it back together if you take out the crank, but at the same time, it's good to finish a project instead of starting another. I pretty easily get four or five things on my hands if I don't stay on top of things.

Another option might be selling the engine - maybe someone would trade you for a good crank?
1982 KZ750 Spectre - 6 speed swap, BS34s, 18" rear wheel

2001 ZX-6R

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1976 Kz 900 A4 23 Aug 2021 09:04 #854221

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I'd be interested in seeing what that crank mic's out to. I suspect it's about the same. If it's better I'd use it, put it back together, sell it or start another project. My bike is still going strong 3 1/2 years later and will be installing my 1075 kit when I get it back from APE. I'll even use new emblems on the side covers. 
Steve
 
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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1976 Kz 900 A4 23 Aug 2021 13:56 #854231

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Couldn't get 1075 emblems Steve?

Rick H.
Rick H.

1977 Kawasaki KZ-1000A1

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1976 Kz 900 A4 23 Aug 2021 14:24 #854234

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How many cc's are the 1100's? 1089cc. 1075 is close enough. The KZ1000J models 998cc. 
Steve
en.wikipedia.org/wiki/Kawasaki_Kz1000
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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1976 Kz 900 A4 23 Aug 2021 15:10 #854240

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Speaking of CC’s is there any way to find out the bore on this new to me engine. I don’t plan to pull it apart. I’m am going to pull the pan to visually inspect the lower half. Can you access the bottom of the block with the pan off?
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.

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