Carburetor Question

WarrensKZ
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Carburetor Question

05 Mar 2019 15:10 - 05 Mar 2019 15:47

I have a nifty set of vapor blasted VM24SS for my KZ650. The person I bought them from has them jetted for pods. Im going back to the original 102.5 and 15 setup. But I was told he put the needle in the "4th slot."

I have no experience dithering with carb needles. Will the bike run properly with the stock main and pilot jet, but with the needle in 4th? If not, why, and how do I adjust the need back to stock position?

Thank you gentlemen.

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Last edit: 05 Mar 2019 15:47 by WarrensKZ.

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Warren3200gt
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Re: Carburetor Question

05 Mar 2019 15:34 - 05 Mar 2019 22:42

#799792

4th slot from the top is stock position. While you have them off the bike set the float height using the wet method and bench sync the slides. You need to sync them on the bike when running to fine tune them to the characteristics of each cylinder but a bench sync will get them close enough to run. Vm26 are not stock on 650. Vm24 are the stock carb size. 26 should run ok though.
Set the idle screw to 1.5 turns from lightly seated and again fine tune with a colourtune when running.

Z1000J2 somewhat modified!

Last edit: 05 Mar 2019 22:42 by Warren3200gt.

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WarrensKZ
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Re: Carburetor Question

05 Mar 2019 15:46

#799794

Warren3200gt wrote: 4th slot from the top is stock position. While you have them off the bike set the float height using the wet method and bench sink the slides. You need to sync them on the bike when running to fine tune them to the characteristics of each cylinder but a bench sink will get them close enough to run. Vm26 are not stock on 650. Vm24 are the stock carb size. 26 should run ok though.
Set the idle screw to 1.5 turns from lightly seated and again fine tune with a colourtune when running.

Sorry. I meant to say they are VM24 SS not 26,

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baldy110
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Re: Carburetor Question

07 Mar 2019 14:31 - 07 Mar 2019 14:32

#799874

Leave the needle clip in the stock slot, install 17.5 pilots and keep the mains at 102.5. Buy a set of 105 mains in case the 102.5 are to small but you should be fine.

Last edit: 07 Mar 2019 14:32 by baldy110.

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martin_csr
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Re: Carburetor Question

08 Mar 2019 06:39

#799924

Shouldn't he go with #15 pilots with the stock airbox? He didn't say, but I think he'll be using the airbox.

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1981 KZ650 Competition Sports and Road

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bluej58
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Re: Carburetor Question

08 Mar 2019 15:40 - 08 Mar 2019 15:40

#799961

Is it a stock air box with a stock paper filter or K & N type filter?

78 KZ1000 A2A

Last edit: 08 Mar 2019 15:40 by bluej58.

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WarrensKZ
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Re: Carburetor Question

08 Mar 2019 15:55

#799962

bluej58 wrote: Is it a stock air box with a stock paper filter or K & N type filter?

Im using the airbox. No way would I add pods to this old stocker. So I put #15 pilot and 102.5 mains in and took out the 17.5 and 110 main.

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