1979 KZ 650 B3 what are the carbs

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1979 KZ 650 B3 what are the carbs

20 Oct 2024 16:08
#905270
I just stripped down the carb assembly ready for vapour blasting and I found that in one of the float bowls there was a ball and weight came out. I checked the other 3 and they were secured by a very tiny spring. I don't know what it is called or what it is for. Looking at parts diagrams it does not even come up as a part. These items are not in any parts list I have found. Any ideas appreciated, TIA
Tantanoola South Australia.
1979 KZ 650

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Re: 1979 KZ 650 B3 what are the carbs

20 Oct 2024 17:14
#905272
That ball, weight, and c clip are for the accelerator pump feed.  Each float bowl should have these parts or the accelerator pump won't work.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

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

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Re: 1979 KZ 650 B3 what are the carbs

20 Oct 2024 17:54 - 20 Oct 2024 17:57
#905273
Vietvet wrote:
I just stripped down the carb assembly ready for vapour blasting and I found that in one of the float bowls there was a ball and weight came out. I checked the other 3 and they were secured by a very tiny spring. I don't know what it is called or what it is for. Looking at parts diagrams it does not even come up as a part. These items are not in any parts list I have found. Any ideas appreciated, TIA

 
 

 

 

Took about 2 minutes to locate... but it looks like only the O ring is still available to order, so don't loose those parts!
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 20 Oct 2024 17:57 by Injected. Reason: info

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Re: 1979 KZ 650 B3 what are the carbs

21 Oct 2024 01:45
#905279
Is it possible to bypass the pump, disconnect the rod and just adjust the jets to make up for not having the pump. I don't like accelerateor pumps. Back in 1974 I had a Ducati 750 GT which h had Dellorto cards with them, my mates used to twist the throttle to pump them while I was else where and then stand back and laugh as I had to kick start a flooded engine.
Tantanoola South Australia.
1979 KZ 650

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Re: 1979 KZ 650 B3 what are the carbs

21 Oct 2024 06:23
#905283
Do your carbs have one diaphragm on the float bowl, or two?  The carbs with two are more problematic than those with just one.  If you have the single diaphragm type carbs, you may want to just keep it.  
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

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

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Re: 1979 KZ 650 B3 what are the carbs

21 Oct 2024 12:33
#905294
There are two at the base of number two carb. I will order a repair kit for it and hope that the little spring clips are included. Long term I might look around for a second hand set of carbs off a Z650 which the rest of the World got and didn't have all this junk just to satisfy the Californian system.
Tantanoola South Australia.
1979 KZ 650

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Re: 1979 KZ 650 B3 what are the carbs

21 Oct 2024 12:40
#905295
Vietvet wrote:
There are two at the base of number two carb. I will order a repair kit for it and hope that the little spring clips are included. Long term I might look around for a second hand set of carbs off a Z650 which the rest of the World got and didn't have all this junk just to satisfy the Californian system.
Correctly functioning "accelerator pumps" are a good thing, they eliminate "hesitation" when snapping the throttle open
1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca
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Re: 1979 KZ 650 B3 what are the carbs

21 Oct 2024 14:28
#905302
Vietvet wrote:
 Long term I might look around for a second hand set of carbs off a Z650 which the rest of the World got and didn't have all this junk just to satisfy the Californian system.
You can either disable the pumper mechanism or simply remove the pumper rod and replace the pumper float bowls with those from a set of non pumper VM's.
The non pumper bowls don't have the drilling for the check valve and also block off the passage to pumper nozzle.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





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Re: 1979 KZ 650 B3 what are the carbs

22 Oct 2024 07:49 - 22 Oct 2024 10:34
#905330
The K&L kit includes the spring. replacing the bowls and trying to bypass it isn't worth the trouble. test the pump by rigging a fuel supply, then vigorously actuate the throttle pulley. fuel should squirt out each nozzle w/o hitting the carb bore walls. after installing the parts, if the carbs are gummed up, the problem isn't the pump, it's clogged orifices.
Last edit: 22 Oct 2024 10:34 by H1Vindicator.

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