Author Topic: Z1 information 1973 Z1 photos  (Read 9887 times)

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Online Kelly E

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Re: Z1 information 1973 Z1 photos
« Reply #100 on: June 22, 2021, 04:48:57 PM »
Our 19k mile motor is stuck so a top end job is likely in its future.
Never Give Up - Never Surrender

The Rust Bros. Garage Collection
1974 Honda CB 550 K0                                            1971 MGB/GT
1975 Honda CB 400F Super Sport                          1972 MGB/GT
1977 Kawasaki KZ 1000 LTD                                   1985 GMC S15
1978 Kawasaki KL 250
1980 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
1983 Honda CB 1100F
1984 Honda VF 700S Sabre
1984 Honda VF 1000F Interceptor
1990 Moto Guzzi 1000 Le Mans
1994 Kawasaki Concours ZG 1000A9
2005 Harley Davidson Fat Boy

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #101 on: June 26, 2021, 08:03:41 AM »
Best of luck, looks like the forum may get two "Other Bikes" threads to follow.
I just came to an agreement to buy the 73 Z1, I have to get my little trailer set up to go get it and bring it home for its resurrection.
I'm going to start a new thread when I begin the journey; I'm a little nervous because it will be a learning experience; I don't know much about the details of a Z1 and the forums don't seem to be as full of information as this one is for the sohc bikes.
Let the fun begin.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Stev-o

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Re: Z1 information 1973 Z1 photos
« Reply #102 on: June 26, 2021, 02:08:41 PM »
I'm a little nervous because it will be a learning experience; I don't know much about the details of a Z1 and the forums don't seem to be as full of information as this one is for the sohc bikes.
Let the fun begin.

Hey Maui....dont be intimidated, you're going to find the Kawasaki to be very similar to the Hondas that you've worked on.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #103 on: June 26, 2021, 02:42:34 PM »
Thank you, sometimes I obsess about things but they usually work out. One thing I’ve been worrying about (this is how bad it is) is the engine paint. 73 Z1 engines are black with the edges of the fins silver. So I’m thinking, I paint the engine with an appropriate black engine paint (how glossy or not glossy?) and after a good paint job I just carefully abrade paint off the edge of the fins? My mind says that’s bad, it leaves that edge open to corrosion which will go under the paint and ruin it. So do I seal the edge with clear to slow that down?
See what I mean?
It’s a disease.
Anyway, I’m switching the back of the garage over from mostly woodwork back to bike work. I hope to go pick it up this week. The garage is two cars wide by two deep about 1100 sq ft., the back half is where my tools and stuff are, I’m usually doing woodwork but I set it up a little differently for bike work. I may try zinc plating again to see if I can get better.
Down the rabbit hole I go. Go figure I found a 73 Z1 frame number 01886 engine 01784, pretty low numbers, here on Maui of all places.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Stev-o

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Re: Z1 information 1973 Z1 photos
« Reply #104 on: June 26, 2021, 02:44:44 PM »
Go figure I found a 73 Z1 frame number 01886 engine 01784, pretty low numbers, here on Maui of all places.


Its a sign from above?!!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline ekpent

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Re: Z1 information 1973 Z1 photos
« Reply #105 on: June 26, 2021, 05:15:30 PM »
 I would try and get it running first before I started tearing it down or doing any resto,s. Get to know it a little bit first. 

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #106 on: June 26, 2021, 07:21:34 PM »
I’m going to try, at least to diagnose what if anything is really wrong with it.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline ekpent

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Re: Z1 information 1973 Z1 photos
« Reply #107 on: June 27, 2021, 06:18:19 AM »
 Has the owner claimed "ran when parked" ?

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #108 on: June 27, 2021, 08:34:05 AM »
Funny you should ask.
He seems to be a pretty straight guy, he's the brother of a former neighbor on my street who switched to Harleys around 2012 which is when it was parked. I saw it go up and down the street around that time, I heard it coming and recognized the sound of an older 4 cylinder bike. He hasn't really said the words " ran when parked" but implied it and the good thing is I witnessed it running about the time it was parked. He also said it was hard to start but ran well. I'm going to put my temporary tank on it fiddle with it to see if I can get it running, I don't know if I'll ride it a little until I look the brakes and other stuff over to see if it's safe.
So in a way, yes, "ran when parked" might be true, I'll find out soon.
I am paying too much but it's a nice low number 73 so I really want to "save" it from oblivion.
It's a disease
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Stev-o

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Re: Z1 information 1973 Z1 photos
« Reply #109 on: June 27, 2021, 12:52:05 PM »
I would try and get it running first...

I agree with Eric. Of course the carbs will need to come off and apart.  I think you'll find the Mikunis easy to work on.  Curious to see what size they are, many were changed on the early bikes as they could be hard to tune.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline 754

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Re: Z1 information 1973 Z1 photos
« Reply #110 on: June 27, 2021, 01:37:05 PM »
You said bike came out if Canada ! I think...wonder which dealer it came from..
 The engine paint was matt black , I think. Prep is everything, bake after paint helps. Many chopper and custom engines painted that way,  if prep is good it should stay on near fin edge.... dont park by the ocean every day.l
Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #111 on: June 27, 2021, 02:42:49 PM »
I’ll try to find out where the dealer is/was.
I’ll send a photo of the carbs. I pick it up Wednesday morning. I made some changes to my trailer to safely strap it down.
Anyone want to recommend a paint?
I’m going to look at POR15 products but I’m sure there are other worthy brands.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #112 on: June 30, 2021, 02:19:05 PM »
Had another delay, headed up this afternoon, I’ll get some photos of the “recovery”.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #113 on: June 30, 2021, 06:58:23 PM »
It’s home.
Turns out it was purchased in British Columbia near the border with the US originally.
It has the correct head, just the wrong carb boots. The head has the cast in vacuum ports.
There are a lot of things I’ll need to address, the list is pretty long.
I’ll be getting started by servicing the carbs and trying to get it to start just to assess,
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Terry in Australia

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Re: Z1 information 1973 Z1 photos
« Reply #114 on: June 30, 2021, 09:08:31 PM »
Woohoo! New project! Well done mate, get it going and take it for a ride, you'll love it! ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

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Offline 754

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Re: Z1 information 1973 Z1 photos
« Reply #115 on: June 30, 2021, 10:03:44 PM »
Cool, i am in Kelowna BC ...90 miles from border.. now i really wonder what town.
 Vics Motorsports was our local dealer, and an old buddy had the Kawi dealership in Chilliwack when Z1 came out..
 Quite a few did not survive the first year. If it has original dealer decal even not readable, post a photo please.
« Last Edit: June 30, 2021, 10:06:54 PM by 754 »
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Terry in Australia

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Re: Z1 information 1973 Z1 photos
« Reply #116 on: June 30, 2021, 10:32:15 PM »
I forgot to ask Steve, what's the build date? I'm hoping it's a 1972 build, they're very rare, and valuable. Think sandcast prices, but rarer than a sandcast. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Stev-o

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Re: Z1 information 1973 Z1 photos
« Reply #117 on: July 01, 2021, 07:15:32 AM »
Congrats....welcome to the Z1 club!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #118 on: July 01, 2021, 08:16:27 AM »
Label on neck says 10/72 build
The previous owner says the dealer was "about 100" miles from the border but does not remember where. I have a document from the BC DMV (not sure what they call themselves), I'll check it out to see if there is any indication of location.
I'll start a new thread for the actual work and call it Maui Z1, how creative!! I really want to hear it run first, I can't ride it any more than up and down the street as the tires hold air but are very cracked and the master cylinder works but not very well.
It kicks over very nicely. I'm really happy the head appears to be correct with the cast in vac ports.
I guess I'll get a larger compressor and baking soda gun to clean the engine parts, the black paint is in pretty poor shape and lacks the silver edges on the fins.
The fork lowers are painted and all photos I've seen seem to be polished lowers.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #119 on: July 01, 2021, 08:21:03 AM »
I'll get some more photos but I think it has early carbs.
The PO said they struggled with jetting. Seeing the 4-1 and tiny pods seems to explain that. I plan to go back to original breathing all the way around. I also may eliminate the oil cooler that's on it, the oil lines look pretty rough and I'll never drive it that hard.
The spokes are corroded, the rims may be ok.
Lots of chrome is shot.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Stev-o

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Re: Z1 information 1973 Z1 photos
« Reply #120 on: July 01, 2021, 08:32:08 AM »

The spokes are corroded, the rims may be ok.

The original rims are date coded, salvage them if at all possible.   

I installed stainless spokes from Buchanan.

'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline ekpent

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Re: Z1 information 1973 Z1 photos
« Reply #121 on: July 01, 2021, 08:57:35 AM »
 Congrats on the purchase. I don't think you will be suffering any buyers remorse over that one. Looking forward to your new thread and its progress.

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Re: Z1 information 1973 Z1 photos
« Reply #122 on: July 01, 2021, 01:00:15 PM »
100 miles from border really narrows it down, probaly a 1 in 4 chance or better its from here.
 Rectangular sticker, green black and white  I think..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline MauiK3

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Re: Z1 information 1973 Z1 photos
« Reply #123 on: July 01, 2021, 07:39:07 PM »
I’m goin to look for more information   
I started the Maui Z1 thread to follow the work.
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline Stev-o

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Re: Z1 information 1973 Z1 photos
« Reply #124 on: July 02, 2021, 12:18:52 PM »

I started the Maui Z1 thread to follow the work.

Here's the link for anyone interested...

http://forums.sohc4.net/index.php/topic,187375.0.html
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........