1980 GSX750 Jetting Advice
I've got a 1980 GSX750 with OEM Mikuni CV 32mm carbs, Pod filters, 4 into 1 exhaust and cam/port work to the motor.
Its currently running rather lean (see plug photo)
Current settings are:
135 mains, 45 Pilot, Fuel screws 2.5 turns out, standard 5C32 needle on the 5th (lowest) clip.
Where should I go from here? I was going to richen the needle but its already at its richest setting, what needles do I need?
Shall I go higher on the mains as well?
Any advice would be
Yeah, so I'm still using the jetting stated above. 135 Main, 42.5 Pilot, Fuel Screw 2 turns out and Standard needles on the richest 5th clip.
If you find my build thread, I ended up making some aluminium shroud tube that I pressed over the POD filters. This has helped to restrict and potentially direct the flow a little better.
It's not perfect but it's plenty ride able. Ideally it needs a richer needle and Dyno time. But I think I'd go down the new carb route rather than putting anymo