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73 vs 74 Z1 forks and valving
- sdinse
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18 May 2024 19:34 #899278
by sdinse
Steve
1973 Z1 Since New
73 vs 74 Z1 forks and valving was created by sdinse
I would think that the change from the 73 design to 74 was for the better, but maybe not. Does anyone know what the end result (ride quality) of the 74 valves was?
73
74
73
74
Steve
1973 Z1 Since New
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- Mikaw
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18 May 2024 20:44 - 18 May 2024 20:48 #899280
by Mikaw
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.
Replied by Mikaw on topic 73 vs 74 Z1 forks and valving
I have rebuilt a dozen or so pairs of forks from 74-75 up to 1978 and haven’t seen the damper you show as a 1974 Z1. They all are like the 1973 example
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.
Last edit: 18 May 2024 20:48 by Mikaw.
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- slmjim+Z1BEBE
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- Enjoy Life! IT HAS AN EXPIRATION DATE!
19 May 2024 04:58 - 20 May 2024 05:00 #899290
by slmjim+Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.
Replied by slmjim+Z1BEBE on topic 73 vs 74 Z1 forks and valving
Both designs are pictured in John Brookes' book (fourth edition) & onward, and in Kawasaki BULLETIN SER 74 GEN -16 detailed below.
Scuttlebutt was that changes were made to improve damping, and also to eliminate the irritating 'thunk' heard that early forks could produce when striking abrupt, raised edges such as driveway entrances at low speed.
General Service BULLETIN SER 74 GEN -16 documents differences, special tool for dis / reassembly, and changes to PN #'s (attached below). That bulletin also refers to BULLETIN SER 74 GEN 17 , which we done have. (If anyone has BULLETIN SER 74 GEN 17, could you please post it?) Thx.
Good Ridin'
slmjim & Z1BEBE
EDIT: posting as .jpg's.
Scuttlebutt was that changes were made to improve damping, and also to eliminate the irritating 'thunk' heard that early forks could produce when striking abrupt, raised edges such as driveway entrances at low speed.
General Service BULLETIN SER 74 GEN -16 documents differences, special tool for dis / reassembly, and changes to PN #'s (attached below). That bulletin also refers to BULLETIN SER 74 GEN 17 , which we done have. (If anyone has BULLETIN SER 74 GEN 17, could you please post it?) Thx.
Good Ridin'
slmjim & Z1BEBE
EDIT: posting as .jpg's.
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.
Last edit: 20 May 2024 05:00 by slmjim+Z1BEBE.
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- sdinse
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- sdinse
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- sdinse
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19 May 2024 14:37 #899327
by sdinse
Steve
1973 Z1 Since New
Replied by sdinse on topic 73 vs 74 Z1 forks and valving
OOPS!
After looking at the service bulletins I appears I got my 73 - 74 labelling backwards. Glad I have it straight now before I put it all back together.
After looking at the service bulletins I appears I got my 73 - 74 labelling backwards. Glad I have it straight now before I put it all back together.
Steve
1973 Z1 Since New
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- slmjim+Z1BEBE
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20 May 2024 04:39 - 20 May 2024 04:57 #899357
by slmjim+Z1BEBE
We attached that .pdf file two different ways, because we're not sure how the site handles .pdf files. The live link seems broken. There's also an icon at the bottom of the post that is the same .pdf file. Clicking that enables downloading & viewing, or right-clicking enables 'save link as' function, at least on Firefox.
We'll re-scan as a .jpg. below & edit that other post if it's not too late.
Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.
Replied by slmjim+Z1BEBE on topic 73 vs 74 Z1 forks and valving
Sorrry. Our attachment-fu is stymied on this site sometimes.Hmmmm . . . I get this from clicking on that PDF link:ForbiddenYou don't have permission to access this resource.Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Any special reason for that?Thanks SlimJim & Z1BEBE, good info to know. I will put in the updated assembly.
We attached that .pdf file two different ways, because we're not sure how the site handles .pdf files. The live link seems broken. There's also an icon at the bottom of the post that is the same .pdf file. Clicking that enables downloading & viewing, or right-clicking enables 'save link as' function, at least on Firefox.
We'll re-scan as a .jpg. below & edit that other post if it's not too late.
Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.
Last edit: 20 May 2024 04:57 by slmjim+Z1BEBE.
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- Wookie58
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20 May 2024 05:19 #899360
by Wookie58
Replied by Wookie58 on topic 73 vs 74 Z1 forks and valving
If you email it to me as a PDF I will put in on the filebase
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- sdinse
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20 May 2024 10:51 #899383
by sdinse
Steve
1973 Z1 Since New
Replied by sdinse on topic 73 vs 74 Z1 forks and valving
Thank you so much! These are much better quality than the ones I got from the Kaw Triples website. It's all very clear now. See what I did there? Ha Ha
Steve
1973 Z1 Since New
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- slmjim+Z1BEBE
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21 May 2024 04:29 #899443
by slmjim+Z1BEBE
Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.
Replied by slmjim+Z1BEBE on topic 73 vs 74 Z1 forks and valving
If right clicking on the .pdf attachment (not the live link) & selecting 'save link as' doesn't work we can do that. Send us an email & we'll attach in response.If you email it to me as a PDF I will put in on the filebase
Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.
Please Log in or Create an account to join the conversation.
- Scirocco
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- Never change a running system
21 May 2024 17:01 #899495
by Scirocco
slmjim+Z1BEBE : 10-30-74 BULLETIN SER 74 GEN 17
My 1975 Z 1 B 900 Project
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
Replied by Scirocco on topic 73 vs 74 Z1 forks and valving
Kawatriple: 12-6-74 BULLETIN SER 74 GEN 17Thank you so much! These are much better quality than the ones I got from the Kaw Triples website. It's all very clear now. See what I did there? Ha Ha
slmjim+Z1BEBE : 10-30-74 BULLETIN SER 74 GEN 17
My 1975 Z 1 B 900 Project
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
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