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Air suction system 28 Aug 2016 06:27 #740222

  • stokes
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What are the benefits,if any,of removing/disabling the air suction system on my 1980 KZ1000b Ltd?Is it as simple as plugging the hose connections?
1980 KZ1000B Ltd

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Air suction system 28 Aug 2016 06:29 #740223

  • Patton
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Good Fortune! :)
1973 Z1
KZ900 LTD
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Air suction system 28 Aug 2016 06:37 #740227

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Kawasaki's "clean-air system" was designed only to reduce emissions, and does not otherwise improve engine performance.

Removing the "clean-air system" eliminates the several potential air leak sources at the various hose connections incident to the system.

But be on the lookout for squadrons of black helicopters with bunches of federal marshals rappelling down with their emmission-sniffing commando attack dogs to git'cha! :woohoo:

Good Fortune! :)
1973 Z1
KZ900 LTD

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Air suction system 28 Aug 2016 06:39 #740228

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No real benefits except you loose a bunch of potential vacuum and intake leak sources.

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Air suction system 28 Aug 2016 06:52 #740231

  • carwash
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Just removed mine on my '80 KZ550, the bike runs waaaaay better, but I also replaced the carb boots. I had a vacuum leak that was messing with my idle, most likely the majority of which was in the boots, but I'm all for removing as many factors as possible from the equation.
1980 KZ550A
1980 CB750F

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Air suction system 28 Aug 2016 07:44 #740239

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carwash wrote: Just removed mine on my '80 KZ550, the bike runs waaaaay better, but I also replaced the carb boots. I had a vacuum leak that was messing with my idle, most likely the majority of which was in the boots, but I'm all for removing as many factors as possible from the equation.






Good Fortune! :)
1973 Z1
KZ900 LTD
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Air suction system 28 Aug 2016 08:52 #740248

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My old cover had a set-screw threaded into each of the four holes of the cam cover, inserted from the top beneath the reed valves. A PO had installed them as deep into the hole as he could get the tap to thread. That was a good method for plugging the holes, so the reed valves and covers were no-longer needed.
The Canadian cover has no reed-valve towers, for some reason. :blink: Canada was/is misguided less than US, it seems.
1982 KZ1100-A2

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Air suction system 28 Aug 2016 09:20 #740251

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Patton wrote: Kawasaki's "clean-air system" was designed only to reduce emissions, and does not otherwise improve engine performance.

Removing the "clean-air system" eliminates the several potential air leak sources at the various hose connections incident to the system.

But be on the lookout for squadrons of black helicopters with bunches of federal marshals rappelling down with their emmission-sniffing commando attack dogs to git'cha! :woohoo:

Good Fortune! :)

Thanks forthe detailed instruct in your first post,Patton.As for the black copters,I've lined my helmet with foil in anticipation of such an attack.
1980 KZ1000B Ltd

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Air suction system 28 Aug 2016 11:57 #740269

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daveo wrote: My old cover had a set-screw threaded into each of the four holes of the cam cover, inserted from the top beneath the reed valves. A PO had installed them as deep into the hole as he could get the tap to thread. That was a good method for plugging the holes, so the reed valves and covers were no-longer needed.
The Canadian cover has no reed-valve towers, for some reason. :blink: Canada was/is misguided less than US, it seems.


Us Canucks had more clean air (per person) to waste back then....
2-04 R1, 81 CSR1000, 81 LTD1000, 2-83 GPz1100, 3-79CBX, 81 CBX, 3-XS650, 84 Venture, +parts
Quote "speed costs money...how fast do you want to go?" (Which Z movie?)
Universal formula for how many motorcycles one should own = n + 1, where n is how many motorcycles you own right now....

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Air suction system 11 Jan 2021 14:45 #841540

  • ThatGPzGuy
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Resurrecting an older thread but I am taking a hard look at my air suction system.
Is this a problem? The reed on the right is open. I would take it out and flip it but the screws are corroded and one has snappped off. I'll probably just connect them and ditch the whole thing.
Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"
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Air suction system 11 Jan 2021 20:51 #841557

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ThatGPzGuy wrote: Resurrecting an older thread but I am taking a hard look at my air suction system.
Is this a problem? The reed on the right is open. I would take it out and flip it but the screws are corroded and one has snappped off. I'll probably just connect them and ditch the whole thing.


Ditch it. Now that it is 40 years old, every part of that system is a potential air leak and tuning problem. Thread the ports and plug them with grub screws. Install block off plates. Connect the feed cages with a snug fitting hose. Whatever.
Ride on.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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Air suction system 14 Jan 2021 05:31 #841695

  • ThatGPzGuy
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Great advice. I put the reeds back in and connected the two sides together. I also plugged the airbox hole.
What a difference. The KZP is rideable again.
I'm getting rid of the one on the GPz too.
Jim
North GA
2016 Yamaha FJR1300ES
1982 GPz750 R1
1974 Kawasaki H1
1976 Kawasaki KZ400
1979 Yamaha XS650 cafe'
2001 KZ1000P
2001 Yamaha YZ426
1981 Honda XR200 stroked in an '89 CR125 chassis
1965 Mustang
1967 Triumph GT6
1976 Bronco
"If you didn't build it, it's not really yours"

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Last edit: by ThatGPzGuy.
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