Carb tear down showed nasty carbon build up, plugged inlet screens, and coated needles and jets. Simply a clean up day as I have no new parts yet.
Attachment 287143
As per spec, a 7/16 drill bit should just fit in the cap between the float arm and the lid to set the fuel level.
Mine are both quite off that measure.
Attachment 287144
Attachment 287145
This setting dictates where the fuel sits in the bowl, and therefore the jet, and has a pretty large relationship with needle position. Venturi suction wicks the fuel out of the jet at idle and the fuel level should ‘rest’ about 1/4” below the top of the jet when installed.
I hesitate to adjust them thinking maybe the angle of the tr3 engine in the MG body is different and the float positions were changed to accommodate the swap.
I may just record the difference and go back to design spec and see what happens. Wondering will drive me nuts if I don’t I figure anyway..