Probably the Carburetors
- wiredgeorge
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wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!
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- bubbap
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- Ride it like you stole it!
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Thanks,
1979 KZ650, Mac 4-2 exhaust. Restored after 25 years of sitting. Dyna elec coils, ignition. As old as I am, been in the family since new.
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- PFC FNG
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- I've got the sickness!!!
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I know it would not be any fun if it was easy, but does it have to be this much fun?
84 ZX750 GPZ (Waiting for paint)
Eastpoint, Mi
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- anarki650
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I was wondering about how I was reading them, but I read them the same way as the new ones, guess theres no standard on them. I was wondering what jets to use because of the pod filters and the mac exhaust. I have a parts bike, 81 CSR 650 looks like carbs don't have the pilot screw or the air screw. Perhaps if I get them cleaned up it may solve my problems or point me in the direction I need to go.
Thanks,
The pods are going to require larger jets all around. With emgo pods and stock 4-2 exhaust (which probably flows about the same as your aftermarket) on an 81 kz650 I was running 17.5 pilots and 115 mains with the needles in the 4th clip and my plug chops were dead on. The pod filters make much more of a difference in jetting than the pipe in most cases as I found out when I replaced the airbox with pods on my old 81.
09 Kawasaki ER6n
77 kz650b1 cafe rebirth project
"Being shot out of a cannon will always be better than being squeezed out of a tube, that's why God made fast motorcycles..."
Dr. Hunter S. Thompson
Omaha NE
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- bubbap
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1979 KZ650, Mac 4-2 exhaust. Restored after 25 years of sitting. Dyna elec coils, ignition. As old as I am, been in the family since new.
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- bubbap
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Now I have some small issues with the idle and carburetors still.
First off the bike starts on full choke immediately on starter or kick.
The issue I am having is after the bike has warmed up and idling at about 1000rpms, which it seems able to run well at.
When I rev it up to 4k it stays there. When I adjust the idle screws 1 and 4 will change the rpms but it seems carbs 2 and 3 have no effect. I am wondering could this possibly be a vacuum leak. I have removed the emissions and plugged all of the ports so I am not sure where the leak would be. I have checked the throttle linkage rod and it is closing all of the throttle valves.
The funny thing is when sitting a 4k I can adjust the idle down a little and the rpms come down, but I have to quickly adjust it back up to where it was to idle at 1k and it will stay idling until I hit the throttle again.
1979 KZ650, Mac 4-2 exhaust. Restored after 25 years of sitting. Dyna elec coils, ignition. As old as I am, been in the family since new.
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- bubbap
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- Ride it like you stole it!
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1979 KZ650, Mac 4-2 exhaust. Restored after 25 years of sitting. Dyna elec coils, ignition. As old as I am, been in the family since new.
Please Log in or Create an account to join the conversation.