Kawi2strokes.com Forum

My H2B carbs have emulsion tube 'shrouds' that are about 6mm tall, protruding into the airstream. I have a spare pair of carbs that I think are H2 or H2A, and the emulsion tube shrouds are really short, like 2mm. Is there a preference there, should I cut my tall ones down?
Jetting questions, I am running expansion chambers, have done port work and smaller squish clearance. The carbs have 100 main jets in them now, what would be a good guess to start out with? Also, raise the needles a notch or two?
Other question would be base ignition timing, standard or less timing? Thanks to all replies.

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.

Modding shrouds is a can of worms you do not want to open. Go up a couple of sizes on the mains, do the idle screw test for the pilot size, and raise the needles a notch to start. Leave the timing stock.

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........

Sounds good, thank you.

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.

what is the idle screw test for pilots

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1973 Z1
1974 H2 750
1976 kz 1075cc ATP turbo

Very early H2 had 2mm choke w/5FL14 needle. Then changed to 8mm w/5EJ15 needle.... I think there is a service bulletin on the change?
Finding the correct pilot jet can be found here:
http://www.kawatriple.com/manuals/carbtune/carbtune.htm

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Answers are here: http://kawatriple.com/