MicroSquirt.com read only forum (Jan.15,2018)

I'm running Yamaha R6 throttle bodies on my RZ350. They have CV slides in them that make them perfect for running on small displacement engines. I took them apart and spaced them correctly for my engine.

http://www.smcomp.com/~smurph/EFI/fuel1.jpg

Here they are installed.

http://www.smcomp.com ...

Those slides keep air velocity high. A variable venturi, so to speak. Look at the bottom of the black slides and you will see a air bleed hole there. As the air flow through the thottle body increases, a siphon effect is applied to the air bleed. This creates a pressure drop inside the pot that ...