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carbs 18 Aug 2021 07:11 #854007

  • riv
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any one have a list of carbs that bolt strait on to kz750e have cvk v076 wf29 at the mo but bits missing think i may just find another set

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carbs 18 Aug 2021 08:44 #854016

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carbs from a zephyr 750, 29 smooth bore, RS34 will fit but will be too big unless you have a big bore kit, cams, high comp and then that will pretty much be race application only. all of the carbs will require different intake boots.

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carbs 18 Aug 2021 10:17 #854020

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Those numbers on the carburetors probably won't mean anything to most folks.  

For physical fitment you can probably use the carburetors from any KZ750-4 as they all used the same carb holders & airbox ducts. 
Most of them thru 1983 had Keihin CV34s.  Some had Mikuni BS34s >> 82 GPz 750-R1, 83 750-L3, 83-85 ZX750A & 84 KZ700. 
Not sure what carbs the KZ750N Spectre, KZ750F & ZN700 Ltd Shaft had, but the carb holders & ducts are the same, so these should fit as well.

 
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carbs 18 Aug 2021 10:30 #854021

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Also, you should be able to use the carburetors from a 1999-2005 ZR7 or ZR7S (ZR750 F/H models).  These have basically the same engine as the KZ750.  Someone at a KZ650 site installed a set on his 650, so it shouldn't be a big problem on a 750.  Also, I would assume the stock carburetors from a 90s Zephyr 750 would work as well (ZR750 C models). 
All of these ZR750s noted are air cooled w oil cooler (not liquid cooled, no radiator) & engine numbering is KZ750EExxxxxx. 

On the 650 he had to modify his airbox. shouldn't be necessary on a 750.  He also had to make the carb holders work. also not a problem for a 750. However, you may need to rig up a way to operate a choke rail which is what he had to do. he connected a knob or something.  I don't think ZR750s would be that hard to adapt, but for simplicity I would try to find an 80s vintage set of carbs.  It depends upon how industrious a guy is.  The same type of carbs as stock would give the added benefit of spare parts.
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carbs 18 Aug 2021 17:51 #854040

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It's getting difficult to find a decent set of rebuildable CV34's for a half way reasonable price.  I've rebuilt something like 6 sets for flipping but guys on ebay want crazy money these days.  You can get some VM24 KZ650 carbs for dirt cheap so if this is just a runner project, that may be a reasonable way to go.  
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carbs 23 Nov 2021 17:15 #858266

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Also, you should be able to use the carburetors from a 1999-2005 ZR7 or ZR7S (ZR750 F/H models).  These have basically the same engine as the KZ750.  Someone at a KZ650 site installed a set on his 650, so it shouldn't be a big problem on a 750.  Also, I would assume the stock carburetors from a 90s Zephyr 750 would work as well (ZR750 C models). 
All of these ZR750s noted are air cooled w oil cooler (not liquid cooled, no radiator) & engine numbering is KZ750EExxxxxx. 

 

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carbs 23 Nov 2021 17:24 #858267

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Well apparently my internet posting skills are about as good as my motorcycle mechanic knowledge, which isn't saying much.  Here's what I attempted to post in the last msg.

Sorry to ask a stupid question here, but it is one of my special life skills....

Are the ZR7 carbs plug & play for the older KZ750's, specifically from a jetting perspective?   I would think since the same engine displacement they are, but what has me wondering about this is the K-tric tps - does being able to adjust ignition timing have any interplay with the jetting?  Would they start at a different 'base level', for lack of a better word?

And yes, I realize I am putting my ignorance of internal combustion systems on full display.  

I'm looking for a set of carbs for my '82 spectre 750 and see some of these carbs on ebay.  

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carbs 25 Nov 2021 06:13 #858315

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Physically, they should be plug and play.    The ZR-7 CVK32 came with 108 main jets and 35 pilots from factory.  The emulsion tubes are different in the two inner cylinders than the outer ones, So are the needles.  All these because air intakesare shorter on the middle.    I have a set lying in my garage. 

Compared with the ones in the Zephyr, the slides also have an extra hole for vacuum.....and yes, the set comes with throttle position sensors which connect to the ZR-7 ignition box.   But for your use, only unplug the TPS pig tail.  Your bike ignition does not use it.   Only question about the jetting would be fuel economy.   But you could choose any jetting you want.   The CVK bodies are same
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carbs 25 Nov 2021 07:47 #858321

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There is a thread about those carbs on the old 650 site.  My may need to be a member to see the thread...
forums.kz650.info/index.php?topic=9383.0
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