The metering rods do not come into the air to fuel ratio picture until the throttle blades are passed the transition slot when opening the throttle, assuming as you say the power piston IS seated at idle.
With the motor fully warmed up you should not see any fuel dribbling out of the booster ring(s) like you do when opening up the throttle.
If you want a leaner idle then that’s done with the mixture screws .
If your mixture screws can change your idle quality when moved in or out from a decent idle position then the carbs idle feed tube size in not too bad.
Once a cam gets to about 220 intake duration @ .050” ( depending on motor cid) then changes may need to be made in this size.
Also keep in mind that as with any duel plane intake manifold your air to fuel mixture especially at full throttle needs to be such that the cylinders that tend to run the leanest are still in a safe range, and this means that the other cylinders will be a tad on the fat side.
There’s just no way around this fact with a duel plane!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
Last edited by steve25; 03-15-2024 at 09:16 AM.
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