KZ550 powered YZ125 project

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02 Jul 2009 01:15 #303811 by nelson8708
Replied by nelson8708 on topic KZ550 powered YZ125 project
thanks for the link. Kinda pricey but, if it comes down to it i'll have to order that kit. If i cant find any place local that can help then i'm going to try to just cut the bottom out of sheet metal and epoxy it together. Not sure if i can find an epoxy that'll hold when in contact with gas.


1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater

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06 Jul 2009 21:54 #304949 by 550A2
Replied by 550A2 on topic KZ550 powered YZ125 project
Hey man, just fiberglass it!, its easy! use a little more resin on the outside of the tank. and sand it smooth. I would slosh a little tank sealer around where you glassed it on the inside so it doesnt get any shards in your carbs,

Thats what i would do.

cheap
easy
and strong!

82 Honda ATC 200-sold
82 Yamaha Virago 920-sold
82 Yamaha YZ250j-kept
80 Suzuki GS 550-sold
82 Kawasaki KZ550 A2-ride all the time
79 Kawasaki KZ650 C-sold
73 Kawasaki Z1 900E-paid $200, sold $6000
86 Yamaha Radian YX600-new project

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18 Jul 2009 00:48 - 18 Jul 2009 00:59 #307760 by nelson8708
Replied by nelson8708 on topic KZ550 powered YZ125 project
Well i'm now wiring the bike and have a few questions. Just to make sure i have everything correct before i put power to it i would like a for a few others to check to make sure i have the correct wires going to ground and power.


^Dont ask me why but, i uploaded a pic of my wiring dia. but, this bike is what comes up. Click on it to enlarge it and my wiring dia. will show up :huh: :huh:

Ignitor :
D/G - coil ground
B - coil ground
R/Y - 12v source
Y/B - Ground

Rectifier :
R/W - 12v source ( back to the B+ termial since i think this is the charging wire)
B - Ground
Br - 12v source

Correct or not?

I'm also running vulcan coils and am trying to figure out which terminal on the coil gets power and which gets ground. One terminal is green and the other is black....anyone know?

Getting closer and closer to seeing if the engine runs:huh:

1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater
Last edit: 18 Jul 2009 00:59 by nelson8708.

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18 Jul 2009 04:39 - 18 Jul 2009 04:55 #307768 by Patton
Replied by Patton on topic KZ550 powered YZ125 project
nelson8708 wrote:

...trying to figure out which terminal on the coil gets power and which gets ground. One terminal is green and the other is black....anyone know?....


Usually doesn't matter, because the coils don't have polarity. On each coil, attach bat+ to one of the ignition coil primary winding terminals, and attach signal wire from ignition to that same coil's other primary winding terminal.

As far as engine "running," a good fully charged battery should allow running with only the coils attached and powered. Unnecessary to have any of the charging system connected such as alternator, rectifier, regulator, or associated wiring. This is called a "total loss" ignition system, whereby the engine may perform normally until the battery runs down. Racers sometimes use it to reduce weight and gain left turn cornering clearance (by eliminating the alternator and alternator cover).

Besides the ignition wiring and charging system wiring, how much chassis wiring is intended for lights and such? :unsure:

Good Luck! :)

1973 Z1
KZ900 LTD
Last edit: 18 Jul 2009 04:55 by Patton.

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18 Jul 2009 15:53 #307835 by nelson8708
Replied by nelson8708 on topic KZ550 powered YZ125 project
Patton wrote:


Usually doesn't matter, because the coils don't have polarity. On each coil, attach bat+ to one of the ignition coil primary winding terminals, and attach signal wire from ignition to that same coil's other primary winding terminal.

Besides the ignition wiring and charging system wiring, how much chassis wiring is intended for lights and such? :unsure:

Good Luck! :)


I know on car coils such as an aftermarket msd coil if you switch the two primary wires it will blow the coil (a buddy had this happen). I really dont want to take a chance unless i cant figure out for sure which terminal gets B+ and which gets ground.

I want to have the entire bike wired before i start it. For now i'm not going to put any lights on it but, when i do it wont be much wiring. Just a couple more circuits. Once for the turn signals and the other for head light, tail light, and license plate light. Not that bad at all.

Since all the alternator wires are yellow i take it that it does not matter which yellow wire it goes to on the rectifier box?

Thanks,
-Nelson

1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater

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18 Jul 2009 16:29 #307844 by otakar
Replied by otakar on topic KZ550 powered YZ125 project
I was just wondering. Are you highly proficient at riding a unicycle? If not, I would get so before you try to ride this thing. This monster will be on the back wheel more so than not. :woohoo: :woohoo:

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000

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18 Jul 2009 16:35 - 18 Jul 2009 16:36 #307845 by otakar
Replied by otakar on topic KZ550 powered YZ125 project
You know-- I just remember, back in the late 70s when Springfield put a XS1100 engine in a flat track bike. The bike was outlawed after the first race because the Harleys had no chance against it. For his victory lap he did two instead; On the back wheel.

74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 18 Jul 2009 16:36 by otakar. Reason: spelling

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18 Jul 2009 16:48 #307846 by Russ Jackson
Replied by Russ Jackson on topic KZ550 powered YZ125 project

1976 KZ 900 B1 29 smoothbores, Kerker, Lester Mags
2008 Kawasaki Concours 14 abs

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18 Jul 2009 21:57 - 18 Jul 2009 21:59 #307948 by Patton
Replied by Patton on topic KZ550 powered YZ125 project
Russ Jackson wrote:

This picture might help.

3.bp.blogspot.com/_VDCGGBYmNCk/SXdxbOLhQ...00/kawiscrambler.jpg


...Russ



Here's another interesting KZ dirt bike.

But don't have further info or pics. :(

Note lack of alternator or alternator engine case.

Click on image to enhance view]



Good Luck! :)

1973 Z1
KZ900 LTD
Attachments:
Last edit: 18 Jul 2009 21:59 by Patton.

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19 Jul 2009 03:07 - 19 Jul 2009 03:10 #307972 by nelson8708
Replied by nelson8708 on topic KZ550 powered YZ125 project
^ that thing is sick

otakar wrote:

I was just wondering. Are you highly proficient at riding a unicycle? If not, I would get so before you try to ride this thing. This monster will be on the back wheel more so than not. :woohoo: :woohoo:


I dont think it will be all that bad since the engine is heavy enough to keep the front wheel down. I guess i'll find out the first time i ride her....that will be an exciting day :woohoo: :laugh:

1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater
Last edit: 19 Jul 2009 03:10 by nelson8708.

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20 Jul 2009 02:33 #308175 by nelson8708
Replied by nelson8708 on topic KZ550 powered YZ125 project
Here are a couple updated pics. I have finished the battery box / cage, mounted the rectifier and ignitor where they will have plenty of air flow, mounted the coils, and the rectifier is now wired along with my starter circuit. Once the ignitor is wired i will be able to attempt to start her. Over this next week i want to make my new rear brake pedal and extend the stock kz kick stand.




^tight fit



^threw some plastics on it (still need to get the tank welded)

1996 yz125 power with 1982 kz550 engine
1989 240sx Turbo weekend warrior
1993 Civic daily beater

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20 Jul 2009 07:03 #308197 by gorack
Replied by gorack on topic KZ550 powered YZ125 project
oh boy didnt need too see this project, only because i have a 88 yz250 that is broken and a good kz650 motor laying around, god this would be crazy to ride, good job on your kyz550

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