What is the Swirl Control Valve? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AL B. · 04-28-2009, 10:23 PM

Located behind the cam cover near the EGR. What is the purpose of this beast?

*s13boy89* · 04-28-2009, 10:26 PM

idk i took all my crap out lol

carcrossy · 04-29-2009, 12:16 AM

Quote:

Originally Posted by AL B.

Located behind the cam cover near the EGR. What is the purpose of this beast?

controls air flow as it enters cylinders. slows/speeds up air speed depending on conditions ie idle

AL B. · 04-29-2009, 03:09 PM

Quote:

Originally Posted by carcrossy

controls air flow as it enters cylinders. slows/speeds up air speed depending on conditions ie idle

Could this be the reason why my car stalls on cold start ups?

projectRDM · 04-29-2009, 03:11 PM

It controls the secondary butterflies within the intake manifold, right at the head, on both SOHC and early DOHC KAs. If it's not opening you'll loose a lot of airflow, but that would nothing to do with stalling/hesitation.

carcrossy · 05-01-2009, 06:53 AM

http://img.photobucket.com/albums/v6...erods033-1.jpg

these are butterfly valves. no idea if they are swirl control valves. the bulb looking thing is the thing that opens and closes the swirl valves.

projectRDM · 05-01-2009, 08:44 AM

Quote:

Originally Posted by carcrossy

http://img.photobucket.com/albums/v6...erods033-1.jpg

these are butterfly valves. no idea if they are swirl control valves. the bulb looking thing is the thing that opens and closes the swirl valves.

Nice way to confuse the thread.

The swirl control valves are the butterflies. Just like I said. Nissan calls them that.

carcrossy · 05-01-2009, 01:49 PM

Quote:

Originally Posted by projectRDM

Nice way to confuse the thread.

The swirl control valves are the butterflies. Just like I said. Nissan calls them that.

Not sure how a picture confuses things. No reason to be threatened by a picture, my friend.

AL B. · 05-07-2009, 10:26 PM

This is what I am talking about fellas. Lets not get confused here...

Devil Man · 05-08-2009, 01:27 AM

and like projectrdm said they control those secondary butterflys as you can clearly see that they are conected too

may i recomend a s14 upper intake mani

AL B. · 05-15-2009, 06:10 PM

Quote:

Originally Posted by Devil Man

may i recomend a s14 upper intake mani

What would be the benefit of that?

projectRDM · 05-17-2009, 11:25 AM

Quote:

Originally Posted by AL B.

What would be the benefit of that?

It doesn't have SCVs. Neither do late '93 and all '94 models. But it's easier to just remove the butterflies from the rod, take the rod out, and plug the hole on the far end than tracking down another manifold.

04-28-2009, 10:23 PM	#1
AL B. Leaky Injector Join Date: Mar 2009 Location: 714 (SoCal) Age: 28 Posts: 72 Trader Rating: (1)	What is the Swirl Control Valve? Located behind the cam cover near the EGR. What is the purpose of this beast?

04-28-2009, 10:26 PM	#2
s13boy89 Premium Member Join Date: Nov 2007 Location: anaheim Age: 20 Posts: 1,765 Trader Rating: (9)	idk i took all my crap out lol __________________ Single Cam FTW!

04-29-2009, 03:11 PM	#5
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 35 Posts: 13,036 Trader Rating: (12)	It controls the secondary butterflies within the intake manifold, right at the head, on both SOHC and early DOHC KAs. If it's not opening you'll loose a lot of airflow, but that would nothing to do with stalling/hesitation. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

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

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

05-01-2009, 06:53 AM	#6
carcrossy Leaky Injector Join Date: Apr 2009 Location: east Posts: 52 Trader Rating: (0)	http://img.photobucket.com/albums/v6...erods033-1.jpg these are butterfly valves. no idea if they are swirl control valves. the bulb looking thing is the thing that opens and closes the swirl valves.

05-07-2009, 10:26 PM	#9
AL B. Leaky Injector Join Date: Mar 2009 Location: 714 (SoCal) Age: 28 Posts: 72 Trader Rating: (1)	This is what I am talking about fellas. Lets not get confused here...