Kz440 carb Questions

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20 Feb 2014 10:57 - 20 Feb 2014 11:03 #622876 by Paullyboy
Kz440 carb Questions was created by Paullyboy
I have a 1981 kz440 B and Im having a hard time finding out what carbs are compatible for bolt on. Any help would be awesome it has 36mm heikin cv carbs now. ive read that theyre garbage. i need new diaphragms but those are no where to be found. some other things in the carb needs work as well. so i figured why not get new ones, haha. Again any help would be great, Thank you
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Last edit: 20 Feb 2014 11:03 by Paullyboy.

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20 Feb 2014 14:21 #622891 by JR
Replied by JR on topic Kz440 carb Questions
regarding the diaphragms you could check with JBM Industries assuming they are still in business
jbmindustries.com/Keihin_diaphragm.html
I have never used them but did bookmark their web site in case I needed them.

You should be able to find lots of good information including manuals here www.kz400.com/

Sorry I dont have any experience with 400/440s but hope this helps until someone who is familiar with your model comes along
1980 kz750E1, Delkevic exhaust
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21 Feb 2014 06:24 #622923 by GPzEric
Replied by GPzEric on topic Kz440 carb Questions
My Stepfather was a short person, and he had a new one of these. That thing was really cold-blooded and needed a careful starting procedure.

I got it working a lot better by putting in the Canadian parts, and tweaking the float level just a smidge.
My wife asked me if I still loved her - I said "Honey, I love you more than new carburetor boots ! "
1982 KZ1100B2 (GPz)
1982 KZ750R1 (GPz)
(2) 1981 KZ550D1 (GPz) 1 mint, 1 under construction
1983 GS1100E

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22 Feb 2014 15:21 #623026 by flint
Replied by flint on topic Kz440 carb Questions
I bought a 2 into 1 aluminum manifold from 11thourindustries. The guy is awesome to work with.

I then used a mikuni vm34 I bought off amazon. I'm still dialing in the carb but, it's so much more responsive then the cv carbs.

Attachment image_2014-02-22.jpg not found

one piece at a time

1980 kz440 ltd a-1 (bobber thing)
1980 kz440 d-1 (stripped down scooter)
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22 Feb 2014 19:05 #623049 by wireman
Replied by wireman on topic Kz440 carb Questions

JR wrote: regarding the diaphragms you could check with JBM Industries assuming they are still in business
jbmindustries.com/Keihin_diaphragm.html
I have never used them but did bookmark their web site in case I needed them.

You should be able to find lots of good information including manuals here www.kz400.com/

Sorry I dont have any experience with 400/440s but hope this helps until someone who is familiar with your model comes along

I discovered those guys years ago on a Yamaha website of all places and posted it up here for guys having problems finding diaphragms for cv style carbs.
Anyway the last time I talked to the owner he was basically stamping/casting rubber parts one at a time in his basement,as far as I know he still is.
The 650 Yamaha guys swear by him.
posting from deep under a non-descript barn in an undisclosed location southwest of Omaha.

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