stock vacuum reading on smic sr

[wangan_cruiser]

anyone know what is the stock vacuum im hg on a sidemount intercooler on sr20?


i would just like to know. thanks

[Def]

SMIC/FMIC doesn't matter.

It should be right at -20 in-Hg with stock cams on a hot idle at about 750 RPM +/- 50. Most 264/264 cams will bring that down to about -13 to -14 in-Hg.

[wangan_cruiser]

oh ok thanks man.

[wangan_cruiser]

and oh btw does it matter if the headgasket was replaced?

im currently running 1.5mm


and my engine runs strong too

[Def]

No, that won't matter on the vac you pull.

Only thing that will affect it are vacuum leaks and your cam duration/cam timing.

[JeremyR]

hey mark why didnt you ask me? lol. my vac is around -22 at idle.