newb carb tuning
- 78kz650guy
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newb carb tuning
14 Sep 2014 18:08
Hello,
I have my carbs apart for cleaning for the first time since I bought the bike in non running condition and want to make sure I put the right jets in it when they go back together. I've read on other posts to raise the pilot by 1 size since my bike has kerker 4>1 and pods. I'm not sure what to do on the main jet though. and I have absolutely no idea what it means to move the needle. The bike also has a dyna s ignition if that changes anything. I know it's hard to pick the right combo first shot, but if ya'll could give me a good starting point that's be alright by me!
Thanks in advance!
I have my carbs apart for cleaning for the first time since I bought the bike in non running condition and want to make sure I put the right jets in it when they go back together. I've read on other posts to raise the pilot by 1 size since my bike has kerker 4>1 and pods. I'm not sure what to do on the main jet though. and I have absolutely no idea what it means to move the needle. The bike also has a dyna s ignition if that changes anything. I know it's hard to pick the right combo first shot, but if ya'll could give me a good starting point that's be alright by me!
Thanks in advance!
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- 78kz650guy
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Re: newb carb tuning
18 Sep 2014 14:34
hellooooooo????
I still need some input here.
I've read that 120 mains and 17.5 pilots are what i need. any other input?
my current set up is stock (107.5 mains, 15 pilot, needle set one notch away from the point)
I still need some input here.
I've read that 120 mains and 17.5 pilots are what i need. any other input?
my current set up is stock (107.5 mains, 15 pilot, needle set one notch away from the point)
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- Patton
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Re: newb carb tuning
18 Sep 2014 18:39 - 18 Sep 2014 18:47
Hello, 78kz650guy, and WELCOME to KZr! 
Is a Factory Service Manual (FSM) available that covers the particular model at hand?
Good Fortune!

Is a Factory Service Manual (FSM) available that covers the particular model at hand?
Good Fortune!

1973 Z1
KZ900 LTD
KZ900 LTD
Last edit: 18 Sep 2014 18:47 by Patton.
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- KZB2 650
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Re: newb carb tuning
19 Sep 2014 06:11
On my 78 Kz650 with a Vance and Hines header and Ape pods I was running 17.5 pilots. the nettle in the 5th clip 1 notch "up" from the stock 4th position and 112.5 mains, air screws out 1.5 turns.
Now that I've gone with the 700cc kit and small 750 cam I went with 117.5 mains and keep everything else the same and am thinking this is very close.
Now that I've gone with the 700cc kit and small 750 cam I went with 117.5 mains and keep everything else the same and am thinking this is very close.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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- 78kz650guy
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Re: newb carb tuning
21 Sep 2014 11:17
Thanks KZB2,
I found this on z1enterprises. I'm not disagreeing with you or anything, just throwing it out there for any input on it.
STAGE 3 Dynojet Kit Fits Kawasaki 1978-81 KZ650 VM24 carbs Kit includes (4) 118 Main Jets, (4) 122 Main Jets, (4) Fuel Needles, (4) Adjusting Washers, (4) E-Clips, (1) Plug Drill, (1) Screw, (1) Installation Guide
STAGE 3: Intended for motorcycles with stock or mildly tuned engines using a well designed aftermarket pipe and individual air filters. In most cases power increases of 10-15% can be achieved.
I found this on z1enterprises. I'm not disagreeing with you or anything, just throwing it out there for any input on it.
STAGE 3 Dynojet Kit Fits Kawasaki 1978-81 KZ650 VM24 carbs Kit includes (4) 118 Main Jets, (4) 122 Main Jets, (4) Fuel Needles, (4) Adjusting Washers, (4) E-Clips, (1) Plug Drill, (1) Screw, (1) Installation Guide
STAGE 3: Intended for motorcycles with stock or mildly tuned engines using a well designed aftermarket pipe and individual air filters. In most cases power increases of 10-15% can be achieved.
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