KZR's Bikes of the Month for 2024

1973 Z1 rebuild

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21 Jun 2022 15:20 #869190 by 750 R1
Replied by 750 R1 on topic 1973 Z1 rebuild
Are you going to change the frame from"80's red" to black ?  

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21 Jun 2022 17:35 #869197 by blackozvet
Replied by blackozvet on topic 1973 Z1 rebuild

Are you going to change the frame from"80's red" to black ?  


 
yes, a lot of stuff like the frame, swingarm, battery box, brake caliper etc will be going back to black.
I have ordered the Jaffa paint set from Japan (got an email yesterday thats it been shipped) 
The plan will be a 'modified' Jaffa bike.
 

1973 Z1 900 Kawasaki

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  • Wookie58
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21 Jun 2022 22:47 #869200 by Wookie58

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22 Jun 2022 04:15 #869202 by 750 R1
Replied by 750 R1 on topic 1973 Z1 rebuild
Excellent !

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22 Jun 2022 05:51 #869206 by blipco
Replied by blipco on topic 1973 Z1 rebuild
Yes. Fantastic. 
Has the frame been stiffened anywhere? I can’t tell.

"Swim against the current, even a dead fish can go with the flow"-somebody (I forget Who)

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22 Jun 2022 06:15 #869207 by blackozvet
Replied by blackozvet on topic 1973 Z1 rebuild

Yes. Fantastic. 
Has the frame been stiffened anywhere? I can’t tell.

 
Yes, above the headers and behind the rear engine mount

1973 Z1 900 Kawasaki
The following user(s) said Thank You: blipco

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23 Jun 2022 21:20 #869275 by blackozvet
Replied by blackozvet on topic 1973 Z1 rebuild
I have had a couple of days off from the bike due to laser eye surgery, but back to it by making a temporary engine stand out of wood.
Its actually surprising how heavy a partially stripped engine can be, so I had to completely box it at the base.
It now spins around so I can get to the sump etc.  The main reason is to paint the engine black again - after I went to the trouble years ago of stripping it all !

 

1973 Z1 900 Kawasaki

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  • Wookie58
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24 Jun 2022 00:27 #869277 by Wookie58
Replied by Wookie58 on topic 1973 Z1 rebuild
Good work, I am all for getting the job done without spending a fortune as long as it works and it's safe 
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  • hardrockminer
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24 Jun 2022 04:32 #869284 by hardrockminer
Replied by hardrockminer on topic 1973 Z1 rebuild
When I do a Z1/KZ engine I strip it down to the cases.  At that point I'm able to wrestle it in and out of the frame by hand.  I've never painted one, but I have only Z1B's and KZ1000's that weren't painted originally.  

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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26 Jun 2022 00:33 #869364 by blackozvet
Replied by blackozvet on topic 1973 Z1 rebuild
Its time to get some more engine stuff done - after pulling off random parts including getting the transmission cover off to get the dynamo wiring loom out and snapping the neutral switch in half, the barrel and pistons are out.

For those that are interested in engine stuff, the overview of the motor is,
Welded crank, APE cam chain.
MTC sleeves,  MTC forged alloy hi comp pistons. 
Head is ported, fitted with oversize Ferrea stainless steel valves 37mm/31 mm.  
APE valve springs, APE titanium retainers.
.430 cams on slotted sprockets.  Also have another set of .410 cams
38mm flat slide Mikuni carbs
Dyna ignition, Dyna coils, Dyna adjustable rev limiter.
4 into 1 Formula1 exhaust.

 

1973 Z1 900 Kawasaki

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  • Wookie58
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26 Jun 2022 01:00 #869365 by Wookie58
Replied by Wookie58 on topic 1973 Z1 rebuild

Its time to get some more engine stuff done - after pulling off random parts including getting the transmission cover off to get the dynamo wiring loom out and snapping the neutral switch in half, the barrel and pistons are out.

For those that are interested in engine stuff, the overview of the motor is,
Welded crank, APE cam chain.
MTC sleeves,  MTC forged alloy hi comp pistons. 
Head is ported, fitted with oversize Ferrea stainless steel valves 37mm/31 mm.  
APE valve springs, APE titanium retainers.
.430 cams on slotted sprockets.  Also have another set of .410 cams
38mm flat slide Mikuni carbs
Dyna ignition, Dyna coils, Dyna adjustable rev limiter.
4 into 1 Formula1 exhaust.

 
Sounds like that will dish out a few surprises to younger machines 
The following user(s) said Thank You: blackozvet

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27 Jun 2022 01:10 #869412 by blackozvet
Replied by blackozvet on topic 1973 Z1 rebuild
the Jaffa paint set from Webike in Japan has arrived ahead of schedule. 
Its the M-TEC "Fireball" set that includes the tank, sidecovers and tail in original Jaffa / Candy brown paint scheme.
I gotta say I'm actually impressed, the paint and clear coat is very nice, the candy brown metallic really pops in the sun !
The frame is still waiting to go to the powdercoater but I couldnt resist a quick photo opp.

 

1973 Z1 900 Kawasaki

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