S13 sr20 iacv - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

midnight_rex · 03-08-2010, 01:01 AM

i was wondering if the hose from the IACV needs to really be hooked to a nipple from the cold pipe?

i was recently looking at the factory setup for the SR20 and it seems that the IACV receives ambient pressure on idle to control the idle of the vehicle (also temp signals). i have a different manifold on my motor which i am building and do not have the nipple coming from my cold pipe. i was thinking, while under boost, the IACV closes completely and reopens at idle at no load in the air intake system.

if i am incorrect then someone explain to me how the system works

midnight_rex · 03-11-2010, 01:25 PM

anyone know any info on this?

s14unimog · 03-11-2010, 02:52 PM

where would you suggest getting a metered supply of air from? My understanding is that is the air supply used to run the car at idle. the throttle body would be closed at this point.

midnight_rex · 03-11-2010, 03:44 PM

oh i see. i was looking at it wrong then. air needs to be SUPPLIED to the IACV. thats how it determines idle. now i understand. so i have to weld a nipple on the cold pipe then.

s14unimog · 03-11-2010, 03:57 PM

yup

msglth

03-08-2010, 01:01 AM	#1
midnight_rex Zilvia Member Join Date: Jul 2008 Location: houston, tx Age: 38 Posts: 239 Trader Rating: (1) Feedback Score: 1 reviews	S13 sr20 iacv i was wondering if the hose from the IACV needs to really be hooked to a nipple from the cold pipe? i was recently looking at the factory setup for the SR20 and it seems that the IACV receives ambient pressure on idle to control the idle of the vehicle (also temp signals). i have a different manifold on my motor which i am building and do not have the nipple coming from my cold pipe. i was thinking, while under boost, the IACV closes completely and reopens at idle at no load in the air intake system. if i am incorrect then someone explain to me how the system works

03-11-2010, 02:52 PM	#3
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	where would you suggest getting a metered supply of air from? My understanding is that is the air supply used to run the car at idle. the throttle body would be closed at this point. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

03-11-2010, 03:57 PM	#5
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 38 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	yup msglth __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

03-11-2010, 01:25 PM	#2
midnight_rex Zilvia Member Join Date: Jul 2008 Location: houston, tx Age: 38 Posts: 239 Trader Rating: (1) Feedback Score: 1 reviews	anyone know any info on this?

03-11-2010, 03:44 PM	#4
midnight_rex Zilvia Member Join Date: Jul 2008 Location: houston, tx Age: 38 Posts: 239 Trader Rating: (1) Feedback Score: 1 reviews	oh i see. i was looking at it wrong then. air needs to be SUPPLIED to the IACV. thats how it determines idle. now i understand. so i have to weld a nipple on the cold pipe then.