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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 06:59 #879272

  • DanMadBoy
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The boots on the manifold side are leaking air. I have replacements. Is there an easy way to install them without pulling the carbs away from the AIRBOX side boots.

To clarify, the boots that attach the carb to the engine are leaking. Any easy ways to get them on? maybe just cut the old ones off and somehow slip them on?

Any ideas?

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 08:58 #879277

  • Wheelhop
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I think it would be easier to remove carbs and replace intake "rubbers" then reinstall carbs.
1978 KZ 1000B (73 tribute)
1977 KZ1000 project
1976 KZ 900
1976 KV 75
1976 Honda Elsinore MT250
1974 Z1 900 project
1971 Honda CT70

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 10:15 #879280

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+1 WheelHop.  However, Dan if you decide to proceed with your proposed course of action, please make a video!

Mike
Former M.E. at Kawasaki Motors Manufacturing, Lincoln, NE
1966 W1 (the Z1 of 1966-50H.P. and 100mph!)
1974 Z1A (disassembled)
1976 KZ900B LTD (SOLD!) it's in GOOD Hands!
1978 KZ1000 LTD
1976 KZ900B pile O parts
1980 KZ750E
1980 Honda XL250S (I know, wrong flavor!)

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 10:16 #879281

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Any cutting of the carb holders and you’ll get crap inside the engine.
The easiest way is to pull the carbs. Anything less would be a nightmare IMO. There’s o-rings too.
"Swim against the current, even a dead fish can go with the flow"-somebody (I forget Who)

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 10:18 #879282

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+1 WheelHop.  However, Dan if you decide to proceed with your proposed course of action, please make a video!

Mike


>>>> +2
 
"Swim against the current, even a dead fish can go with the flow"-somebody (I forget Who)

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 14:50 #879298

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Any cutting of the carb holders and you’ll get crap inside the engine.
The easiest way is to pull the carbs. Anything less would be a nightmare IMO. There’s o-rings too.
 
I looked for O-Rings on partzilla. They arent listed. A member here told me there are no o rings on a 78 KZ Twin. Do you have a part number or link? Makes sense there would be an O Ring but diagrams do NOT show that there are any.

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 15:05 #879299

  • Nessism
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Most KZ carb boots have a raised lip that meets the head and crushes down to affect a seal.  No separate O-rings.
Ed

Carburetor O-ring Kits For Sale: Mikuni VM & BS/CV, and Keihin CV34 (as used on KZ750E/H/N/Spectre, 400)

www.kzrider.com/forum/forum-index/faq-wi...owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 16:37 #879301

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Most KZ carb boots have a raised lip that meets the head and crushes down to affect a seal.  No separate O-rings.
 
Thanks for reminding me. It was you who told me so in the first place. So knowledgeable! Thanks!

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 16:57 #879303

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Most KZ carb boots have a raised lip that meets the head and crushes down to affect a seal.  No separate O-rings.


 

I guess by the "raised lip" you mean this part seen in the photo? Just confirming: See below. This is what the manifold-facing part of my boot looks like. .

 
Attachments:

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Last edit: by DanMadBoy.

1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 20:14 #879305

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Those boots look beat.  You might want to replace them...assuming new ones are available.  

Old boots often lead to vacuum leaks, which causes a raising idle when warm.  I replaced the boots on my bike straight away, during the restoration.  
Ed

Carburetor O-ring Kits For Sale: Mikuni VM & BS/CV, and Keihin CV34 (as used on KZ750E/H/N/Spectre, 400)

www.kzrider.com/forum/forum-index/faq-wi...owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 20:17 #879306

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Those boots look beat.  You might want to replace them...assuming new ones are available.  

Old boots often lead to vacuum leaks, which causes a raising idle when warm.  I replaced the boots on my bike straight away, during the restoration.  
 

Thats a stock photo meant to show the lip. Those are not the ones i have.

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1978 Kawasaki KZ750n Carb boot Cut Off. 25 Jan 2023 21:57 #879308

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Those boots look beat.  You might want to replace them...assuming new ones are available.  

Old boots often lead to vacuum leaks, which causes a raising idle when warm.  I replaced the boots on my bike straight away, during the restoration.  


 

Thats a stock photo meant to show the lip. Those are not the ones i have.

——> Yes, lip. There’s no replaceable o-ring in that holder.

 
"Swim against the current, even a dead fish can go with the flow"-somebody (I forget Who)

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