Speedtospare

Yes opening completely

Typo sorry. Mac rpm is 3500. I did not get to try the choke, we had a bad storm so the Z stayed in the Garage. Fuel filter is new and clear.

Just a shot in the car because im at soccer with my boys. The 76 engine usually has a secondary electric pump. The don't think the 240 chassis has one. Is the secondary pump required and is the mechanical pump on the 260 engine strong enough to meet fuel demands

Looks like it wont rev past 3500 RPM in neutral either.

It revs freely to 4500, I will try 6K tomorrow. My personal experience is telling me fuel issues but I also listening to other more experienced carb guys. Friend told me to pull out the choke a little and see if it will rev a little higher.

The points were replaced and timing set by my mechanic, not sure if he set the dwell of gap. Car seems to be getting good spark. I had the plugs wires, rotor and cap replaced when the motor was swapped in. Feel like a noob here. I can manage to build a 93 Mustang LX coupe and swap a 4.6 4V cobra motor, 6 speed, big brakes, coilovers, hydroboost, and about a billion other things but can't figure out old carb motors. go figure, Thanks for the input. Time to learn some old school.

I will check that Arne, thanks. I was brought up in a fuel injected and now distributor-less world. Carbs are not my forte but I am learning .

Car is a 71 240Z with a 2.6 from a 260Z. SU carbs are from the 240. The car pulls away and make great power in 1st and 2nd gear until 2500 RPM, 3rd gear it makes power until 2300 RPM. Anything above that and its like someone let off the throttle, its just stops pulling. All plugs are the normal golden brown. Front carbs were slightly rich when I first received the car but I adjusted them. About 1/6 of a turn fixed that problem. Car has the points rebuilt when the engine was dropped in. I thinking it might be a fuel pressure problem but I dont have a gauge. Just though I would query you guys before I go buy a gauge. Thanks Ryan