Originally Posted by
combatpigg
The 5/32" TD venturi mod and backplate pressure is what 100% of the local pylon racers have used for years. The size of the pressure orifice makes no difference except that large pressure taps [like 1/16" or even 3/32"] are more prone to accidental backflow into the engine while starting.
Pinching off the delivery line with hemostats and a scramble to release them when the engine comes to life is common starting practice for me because otherwise I end up w/ hydro-lock up. So, if I run say a #60 drill bit through the KK backplate pressure fitting, I should be alright?