stock vacuum reading on smic sr - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*wangan_cruiser* · 10-10-2009, 11:40 PM

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

i would just like to know. thanks

*Def* · 10-10-2009, 11:55 PM

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* · 10-11-2009, 12:16 AM

oh ok thanks man.

*wangan_cruiser* · 10-11-2009, 12:16 AM

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

im currently running 1.5mm

and my engine runs strong too

*Def* · 10-11-2009, 01:34 AM

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.

xdarkrune · 10-11-2009, 01:57 AM

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

10-10-2009, 11:40 PM	#1
wangan_cruiser Premium Member Join Date: Apr 2006 Location: SKYLINE BLVD, BAY AREA, CALIFORNIA Age: 25 Posts: 1,798 Trader Rating: (13)	stock vacuum reading on smic sr anyone know what is the stock vacuum im hg on a sidemount intercooler on sr20? i would just like to know. thanks __________________ buy my dohc ka-t parts http://zilvia.net/f/sale-items/28249...ml#post3063591 SR20DET STARTER SWAP http://zilvia.net/f/tech-talk/182962...rter-swap.html

10-10-2009, 11:55 PM	#2
Def Doctor Chips Join Date: Apr 2004 Location: Fort Worth, TX Posts: 1,223 Trader Rating: (1)	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. __________________ Rear Upright Spherical Bearing Group Buy Redux!!! 92 Nissan 240SX S13 Hatch GT2876R - Constantly tinkering and lots of garage naps... Safety Red/Gloss Black

10-11-2009, 12:16 AM	#3
wangan_cruiser Premium Member Join Date: Apr 2006 Location: SKYLINE BLVD, BAY AREA, CALIFORNIA Age: 25 Posts: 1,798 Trader Rating: (13)	oh ok thanks man. __________________ buy my dohc ka-t parts http://zilvia.net/f/sale-items/28249...ml#post3063591 SR20DET STARTER SWAP http://zilvia.net/f/tech-talk/182962...rter-swap.html

10-11-2009, 12:16 AM	#4
wangan_cruiser Premium Member Join Date: Apr 2006 Location: SKYLINE BLVD, BAY AREA, CALIFORNIA Age: 25 Posts: 1,798 Trader Rating: (13)	and oh btw does it matter if the headgasket was replaced? im currently running 1.5mm and my engine runs strong too __________________ buy my dohc ka-t parts http://zilvia.net/f/sale-items/28249...ml#post3063591 SR20DET STARTER SWAP http://zilvia.net/f/tech-talk/182962...rter-swap.html

10-11-2009, 01:34 AM	#5
Def Doctor Chips Join Date: Apr 2004 Location: Fort Worth, TX Posts: 1,223 Trader Rating: (1)	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. __________________ Rear Upright Spherical Bearing Group Buy Redux!!! 92 Nissan 240SX S13 Hatch GT2876R - Constantly tinkering and lots of garage naps... Safety Red/Gloss Black

Sponsored Links
Remove these by purchasing a Premium Membership with Zilvia.net!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode