1973 Z1 owner from North Carolina

  • Totaldirtbag
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17 Jan 2024 08:27 #894078 by Totaldirtbag
1973 Z1 owner from North Carolina was created by Totaldirtbag
Hi, I'm new to the forum but not new to motorcycling or Z1. I have a few bikes including 1975 BMW R75 and a 2008 Harley Springer. I look forward to contributing and maybe getting some help on an ongoing problem with the Z1. Although the problem relates to extremely rich running I believe I have eliminated the Carbs. Let me know what technical forum I should go to and  open up a dialog. It looks like there are some knowledgable folks out there so thanks in advance.

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17 Jan 2024 12:16 #894095 by Street Fighter LTD
Replied by Street Fighter LTD on topic 1973 Z1 owner from North Carolina
Welcome to KZRider 
 Lots of great help from our membership
Nice Bike 
Dave


Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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17 Jan 2024 12:18 #894096 by Wookie58
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17 Jan 2024 12:52 #894102 by Mcdroid
Replied by Mcdroid on topic 1973 Z1 owner from North Carolina
Welcome to KZRider.

Michael
Victoria, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A

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17 Jan 2024 13:05 #894103 by hardrockminer
Replied by hardrockminer on topic 1973 Z1 owner from North Carolina
Yes, welcome!  Have you rebuilt your choke plungers?

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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17 Jan 2024 18:24 #894116 by Cra-z1
Replied by Cra-z1 on topic 1973 Z1 owner from North Carolina
Choke plungers would be guess also. I normally replace them when I work on a set. 
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18 Jan 2024 04:16 #894124 by slmjim+Z1BEBE
Replied by slmjim+Z1BEBE on topic 1973 Z1 owner from North Carolina
Welcome to The aZylum, our little interwebs corner of motorcycle madness.

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.

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18 Jan 2024 06:10 #894129 by Totaldirtbag
Replied by Totaldirtbag on topic 1973 Z1 owner from North Carolina
Thanks for the suggestions. 
After playing around with the carbs for months I sent the set to a specialist. He inspected and concluded that they were set very close to perfect. The final test was a road test on his test bike (lots of tests in that sentence) all ok. Compression 120 on all pots.
Timing  (cam and Ignition) as close to spot om as I can get it. New coils and "wired George" modification to ensure solid 12V+ at the coils. Spark checked with a tester and jumps a gap to indicate better than 20KV.
All 4 plugs soot up very badly within 2 minutes running. It sounds great until then.  I just know its going to be something stupid that I have overlooked. If anyone knows of a "great" mechanic in or around the Carolinas I would be interested. 

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18 Jan 2024 07:11 #894133 by asphalt900
Replied by asphalt900 on topic 1973 Z1 owner from North Carolina
Nice looking Z! Food for thought. Quick question though, is the engine out NOW or is the pic of completeness a re-install? I have some info on the carbs if it helps the "rich" condition. Pertaining "only to the carbs" though, i do a lot of the ramp style 72-75 Z's. Are You close to Asheville, NC?   

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18 Jan 2024 09:55 #894138 by Totaldirtbag
Replied by Totaldirtbag on topic 1973 Z1 owner from North Carolina
Hi,
I am in Wilmington NC so its quite a way from the mountains. The bike is all together and I don't know how the pic of the engine got attached although I probably selected it by mistake. I would like the info on the carbs .... you just never know if you are missing a piece of the puzzle. The fact that all the plugs foul at the same rate and so quickly leads me to think I'm missing something obvious. Particularly since they worked fine as a set on another Z1. I don't think its a fine tuning issue but likely to be a component failure or I have hooked up something wrongly. There cannot be too many issues that affect every cylinder in exactly the same manner. It seems I am going round and round in circles on this one and its not as if I am inexperienced. Iv'e been working on my own stuff for over 50 years and never been stumped like this. I will (for the 100th. time) remove the carbs and clean and inspect the choke plungers etc. as some of the members have suggested. I' m leaving on a 10 day trip shortly so may not have a chance to do much till I get back. Thanks for your input, I really appreciate the willingness to help.

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18 Jan 2024 11:10 - 18 Jan 2024 11:11 #894149 by Mikaw
Replied by Mikaw on topic 1973 Z1 owner from North Carolina
Did your carb guy tell you what the internal parts sizes are. Telling you the are close to spot on is subject to the carb guy looking up the correct carb rack to compare yours to. Before any information can be given the forum will need to know the current setup. 

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 Jan 2024 11:11 by Mikaw.

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19 Jan 2024 03:34 #894162 by asphalt900
Replied by asphalt900 on topic 1973 Z1 owner from North Carolina
Things to consider. Saturated pleated air filter if installed, plugged vent tees (those little whitish barbs fittings (2) for starters. By fouling do You mean the "look" sooty or does the Z quit running? Did you clean the plugs to their original color for comparison between tests?

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