Removing water lines from intake manifold? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

HOOCH · 06-05-2011, 02:39 PM

So I'm thinking of taking the water lines out of the intake manifold and wondering if anybody here has experience doing it and what they noticed?

The way I look at it is you want your manifold to be cold not hot and having water run through it means it will be at 180-200 so it kinda defeats having cold air going in there then! And by running one of those thick nylon gaskets it will isolate it from the head reducing temps even more!

Motor is redtop SR with greddy manifold!

cotbu · 06-05-2011, 05:41 PM

you can safely remove the coolant lines from the throttle body, but the coolant lines for the iacv are important. If your running it(iacv) leave them. One of the symptoms for removing the IACV coolant lines is high uncontrollable idle.

s14unimog · 06-07-2011, 02:15 PM

^what he said. I usually bleed my coolant system through my IACV lines on my Freddy manifold so I don't have to deal with that surging idle speed on start up. You can get rid of the one for the throttle body as they were intended for cold climate.

HOOCH · 06-07-2011, 06:05 PM

Ok so my next question is how do I tell if it's lines for the iacv? keep in mind this is a greddy manifold

06-05-2011, 02:39 PM	#1
HOOCH Zilvia Member Join Date: Jan 2011 Location: Kalispell, MT Age: 36 Posts: 152 Trader Rating: (12) Feedback Score: 12 reviews	Removing water lines from intake manifold? So I'm thinking of taking the water lines out of the intake manifold and wondering if anybody here has experience doing it and what they noticed? The way I look at it is you want your manifold to be cold not hot and having water run through it means it will be at 180-200 so it kinda defeats having cold air going in there then! And by running one of those thick nylon gaskets it will isolate it from the head reducing temps even more! Motor is redtop SR with greddy manifold! __________________

06-05-2011, 05:41 PM	#2
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 47 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	you can safely remove the coolant lines from the throttle body, but the coolant lines for the iacv are important. If your running it(iacv) leave them. One of the symptoms for removing the IACV coolant lines is high uncontrollable idle. __________________ LoverTechnologies "Half Broken Things!"

06-07-2011, 02:15 PM	#3
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 34 Posts: 2,415 Trader Rating: (22) Rides Gallery: s14unimog Feedback Score: 22 reviews	^what he said. I usually bleed my coolant system through my IACV lines on my Freddy manifold so I don't have to deal with that surging idle speed on start up. You can get rid of the one for the throttle body as they were intended for cold climate. __________________ Fuking ginger bread man stole my wallet... SHIFT*lock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson

06-07-2011, 06:05 PM	#4
HOOCH Zilvia Member Join Date: Jan 2011 Location: Kalispell, MT Age: 36 Posts: 152 Trader Rating: (12) Feedback Score: 12 reviews	Ok so my next question is how do I tell if it's lines for the iacv? keep in mind this is a greddy manifold __________________ Last edited by HOOCH; 06-07-2011 at 06:45 PM..

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