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Carb setting with pods and 4x2 exhaust
- KZB2 650
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Now with my set up I have it in the 5th slot on the nettles and 117.5 mains........ air screw one and 3/4.... air screw never seemed like it did much and left it at the reg setting (I think at 11/4 to 13/8s or so) till I got new carb holders and did the bore and small cam. Opening it up then really seemed to help the response off idle............ Have new manifolds for the 29s and am planning on going back to them again next spring now that the rebuild has proven its self to be all good.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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- skooterbum4real
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After reading 650ed's engineer's statement about air box and exhaust changes, it makes me think about making something to set the pod filters back farther from the carbs.
Attachment carbs.jpg not found
Assuming I understand his statement, it would be beneficial to extend the pod filters as far back as reasonably possible from the carbs. Of course no farther back, than the back of the original air box. Has anyone ever done this ?? I'm sure the transition from the carbs, through what ever was used to extend the pods, and into the pods, would need to be as smooth as possible. I'm going to see if I'm able to come up with anything reasonable to accomplish this with. If I am, I'm sure it will require more carb jetting to get it to run as good as possible.
1978 KZ650B 8,500 miles
1976 KZ750 Twin
SPECIAL CONSTRUCTION V-TWIN CHOP
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- skooterbum4real
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I did catch this little tidbit at the end of that article,
Attachment carbintake.jpg not found
This gives me a bit more hope than you are willing to offer 650ed, for someone making the changes like I'm going to be making. I suppose if I had the CV carbs on my bike, I would be running into a brick wall, and be wasting my time and my money. I'm pretty sure all of my past bikes had the slide throttle carbs, as does my kz650, which I'm sure is in my favor.
Thanks for taking the time to try and educate us 650ed. I certainly appreciate it !!
1978 KZ650B 8,500 miles
1976 KZ750 Twin
SPECIAL CONSTRUCTION V-TWIN CHOP
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- Tyrell Corp
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- "You were made as well as we could make you"
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Lengthening the intake upstream of the venturi is what bell mouth velocity stack intake 'trumpets' do, generally pods are pretty close to the frame rails and there isn't much spare length available.
There are no good rules for jet jumping. I see posts like go one up on the main for pods, another up main for less restrictive pipe.
On some bikes that rule of the thumb is a good starting point, on others it is a mile off. My pipe n' pods CV carb 750r1 is 137.5 mains up from 110 ish standard, I would have started a couple of sizes up, but really didn't expect that much of a jump.
Another downside to the cheapo paper and gauze pods is the air filtration quality, holding them up to the light you can see the holes. At about 60 litres a second these motors gulp a lot of air, poor air filtration accelerates piston ring and valve guide wear.
These look quite nice:
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces
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- SWest
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- 10 22 2014
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Steve
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- missionkz
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Steve you're a fabricator of sorts, why don't you build a retail kit for something like that using extension tubes, smaller pods and shove them up their near the battery box?swest wrote: I like the idea of extending the pods into the frame. There they won't be effected by the air moving past them and the vortex created by it.As it was explained to me, the frame becomes pressurized at speed, thus allowing more air to be available.
Steve
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- gd4now
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- Denco where did you go?
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I would suggest that you keep in mind that in general :
shorter intake - more top end
longer intake - more low end
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
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- SWest
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- 10 22 2014
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I for one will stick with my air box and cool blue silicon boots. :lol:
Steve
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- missionkz
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Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- SWest
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- 10 22 2014
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Steve
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- missionkz
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Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- SWest
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- 10 22 2014
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Steve
Check out Mikuni USA. Lots of info there.
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