I took the bike out on the road today with the 1969 carbs. WOW!!!
Pulls hard all the way through the range.
I checked my plugs and # 4 looked rich but the others were perfect.
I will have to find out why that one plug was rich.
Final overall big picture.
1978 CB750.
1969 carbs.
Intake 1978 air box and filter.
Exhaust 4 into 2 into 1 with megaphone muffler.
Main jet #120 stock on some 1969'S???
Idle jet #40 stock,
Needles middle groove.
Mixture screw 1/2 turn open. Stock is 1 turn open.
