Re: turbocharger supercharger

Posted by samir_nayanajaad on Oct 04, 2011; 2:42pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/turbocharger-supercharger-tp3374914p3393484.html

EDIT: after writing this I thought maybe a picture would help out. No comments on the art work, I have a day job that I'm sticking with.

Man shiny i think im starting to get this stuff, not too hard.  Let me take a swing at ksharps question. Ksharp, take this with a gran of salt as you know I am no expert here but I think I get the basics at least.

If your fuel pump runs higher psi than your max boost with no regulator it will run rich at idle/lower rpms, like you said.  More or less you want your A/F ratio to remain steady throughout the RPM range and with boosting PSI always increases with RPM so your fuel pressure needs to change with boost.  Even though you are pressurizing the float bowls at low rpm you fuel will overcome it too easily with out a regulator.

To make it simple just think of how a standard carb would act if the gas tank was 10 feet above the carbs. The gas has a longer way to fall so its tendency to flow is much higher(or potential energy is higher) so when it starts to flow it really wants to get moving. That's of course a dramatization of whats happening but still same concept. (I think)