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Kz750 Petcock to carb lines help

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02 Jun 2021 19:48 #849509 by Metraso
Kz750 Petcock to carb lines help was created by Metraso
Hello, I recently bought a '79 KZ750 twin. I'm just wondering if someone can show me how to connect the petcock to the carburetors? I've looked everywhere, but I just can't seem to find it.

Thanks, Joshua
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03 Jun 2021 16:31 #849567 by tdogm6@yahoo.com
Replied by tdogm6@yahoo.com on topic Kz750 Petcock to carb lines help
I can take pictures of mine and post them when I get off work. It’s a 1980 twin cylinder, but it should be similar, if yours is also a twin.

1980 KZ750G
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04 Jun 2021 07:18 - 04 Jun 2021 07:24 #849600 by tdogm6@yahoo.com
Replied by tdogm6@yahoo.com on topic Kz750 Petcock to carb lines help

tdogm6@yahoo.com post=849567I can take pictures of mine and post them when I get off work. It’s a 1980 twin cylinder, but it should be similar, if yours is also a twin.

Sorry I took so long.  On my bike, here are fuel two outlets from the petcock, one to the left side of each carburetor. There also two vacuum lines connecting the carbs to each other, which I assume are to help balance them? Hopefully this helps. Maybe a non-newbie can chime in and help is both. 
Good luck. 
Cheers. ??

1980 KZ750G
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Last edit: 04 Jun 2021 07:24 by tdogm6@yahoo.com. Reason: Adding text
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07 Jun 2021 18:08 #849798 by Metraso
Replied by Metraso on topic Kz750 Petcock to carb lines help
You're a lifesaver man, thank you so much! 

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  • gd4now
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  • Denco where did you go?
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08 Jun 2021 15:35 #849842 by gd4now
Replied by gd4now on topic Kz750 Petcock to carb lines help
Just to add some more info this link  has pics and explanations about the hose connections and other info.  

www.wgcarbs.com/index.php/using-joomla/e...-categories/93-KZ750

1977 KZ650 B1
Pods and Denco header


OLD KAW OWNERS SMILE ALOT

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08 Jun 2021 17:00 #849852 by TexasKZ
Replied by TexasKZ on topic Kz750 Petcock to carb lines help
So the earlier models use 38mm carbs and the later ones used 34. Was there a change in horsepower ratings?

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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09 Jun 2021 07:31 #849874 by tdogm6@yahoo.com
Replied by tdogm6@yahoo.com on topic Kz750 Petcock to carb lines help
Do you know if/ where we can find parts for these carburetors

1980 KZ750G

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  • gd4now
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  • Denco where did you go?
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09 Jun 2021 17:09 - 09 Jun 2021 17:27 #849926 by gd4now
Replied by gd4now on topic Kz750 Petcock to carb lines help
Tex, I do not know the answer to your question about claimed HP.  IIRC the early machines with the 38s were claimed to make 55 HP not sure about the later models with the 34s.  I may have a manual somewhere that has this info will do some looking and see if I can find it. 

Edit OK I did take a look at a manual I have for the 83 year and it appears to cover the K model and it indicates a KW not HP rating of 40.4, which if my math is correct equals 54.17729 HP. So very close to the earlier models with the bigger carbs. 

As to parts these are Mikuni carbs, and in general parts for them are easier to find than for the Keihin carbs.  But I have not done any research so do not know for sure, but I tend to look at these two places for Miknui parts - I am sure there are many other locations and members here will most likely provide others. 

jetsrus.com
sudco.com


 

1977 KZ650 B1
Pods and Denco header


OLD KAW OWNERS SMILE ALOT

Last edit: 09 Jun 2021 17:27 by gd4now.
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