Seems like it should be.Vacuum/pressure is zero at WOT during NA operation.
As far as I know, vacuum is higher when there's more restriction, like at idle. WOT with everything opened up is close to atmospheric, so near 0 vacuum.Seems like it should be.
but the cylinders are drawing in air so creating a vacuum in the intake system, so it has to be something under ambient pressure. I’m guessing that a larger draw and more restrictive intake tract (and maybe higher rpm) would cause an even higher vacuum, which is the main reason I’m asking. You’d think a large diameter intake/filter/manifold plenum cross-section would show less restriction by greater (but still under atmospheric) pressure.
im curious if anybody with an n/a coyote has paid attention to their vacuum gauge at WOT and remembers the reading…how far below zero.
The digital dash reads as low as 0.8 inHG during full throttle and the gauge sits *just* above 0 on mine.Seems like it should be.
but the cylinders are drawing in air so creating a vacuum in the intake system, so it has to be something under ambient pressure. I’m guessing that a larger draw and more restrictive intake tract (and maybe higher rpm) would cause an even higher vacuum, which is the main reason I’m asking. You’d think a large diameter intake/filter/manifold plenum cross-section would show less restriction by greater (but still under atmospheric) pressure.
im curious if anybody with an n/a coyote has paid attention to their vacuum gauge at WOT and remembers the reading…how far below zero.
Maybe a 70's / 80's V8 won't, or any low compression engine for that matter.A stock mass produced engine won't be getting near 0.