KZ750 twin.....Soo slow.

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25 May 2008 18:17 - 25 May 2008 18:19 #215787 by bountyhunter
Replied by bountyhunter on topic KZ750 twin.....Soo slow.
superboosted wrote:

so just trial and error?It WOULD still have spark,correct?

Yes, 180 off will spark at bottom dead center of both stroke cycles of the pistons. Correct spark is at TDC of both strokes.

1979 KZ-750 Twin
Last edit: 25 May 2008 18:19 by bountyhunter.

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25 May 2008 19:41 #215816 by superboosted
Replied by superboosted on topic KZ750 twin.....Soo slow.
1 plug looks good...one is black,and smells of gas.

I have checked and they both get spark,and did the water test to both pipes.

77\\\\\\\'KZ750B
80\\\\\\\'CB750K
76\\\\\\\'BMW R75/6

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25 May 2008 19:48 #215817 by superboosted
Replied by superboosted on topic KZ750 twin.....Soo slow.
How much resistance should the wire cap have?And what should the plugs be gapped at?

77\\\\\\\'KZ750B
80\\\\\\\'CB750K
76\\\\\\\'BMW R75/6

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25 May 2008 19:52 #215820 by superboosted
Replied by superboosted on topic KZ750 twin.....Soo slow.
4.57 ohm
4.40 ohm

resistance on the boots

77\\\\\\\'KZ750B
80\\\\\\\'CB750K
76\\\\\\\'BMW R75/6

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25 May 2008 22:37 #215850 by superboosted
Replied by superboosted on topic KZ750 twin.....Soo slow.
Well....Just by chance I cleaned the carbs(again)and when I was removing the main jets,one was full of junk!It wont come out though as the flathead side is boogered pretty good.

...so I guess I will look for a bowl,and a jet on tuesday.

77\\\\\\\'KZ750B
80\\\\\\\'CB750K
76\\\\\\\'BMW R75/6

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26 May 2008 12:43 - 26 May 2008 12:45 #215975 by bountyhunter
Replied by bountyhunter on topic KZ750 twin.....Soo slow.
superboosted wrote:

Well....Just by chance I cleaned the carbs(again)and when I was removing the main jets,one was full of junk!It wont come out though as the flathead side is boogered pretty good.

...so I guess I will look for a bowl,and a jet on tuesday.

Good luck. BTW, nobody sells the main jets for the Mikuni BS38 carbs as a part, but you can get them in the Keyster rebuild kits. Only the stock size (125) is available.

If you clean the bowl and jet thoroughly, you might not have to remove the jet.

1979 KZ-750 Twin
Last edit: 26 May 2008 12:45 by bountyhunter.

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