Ka IACV removal - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Thedriftbadger · 06-24-2013, 11:55 AM

Just bought a spare ka to build for my turbo. I want to clean up some of the emissions and other stuff. The iacv is the most complicated, ugliest thing i've ever seen on a motor. The one on my new motor is all hacked up so it's pretty much trash. The one in the car works but the rpm hangs for a second which its pretty annoying. Anyway i've been reading a lot about just completely removing it, but i can't find anything about how it will affect the a/c. I use the a/c like 90% of the time. Only time i don't use it is sometimes at night, at the track, or if it gets cool in the winter. I figure'd i could just adjust the idle to be like 800rpm with the a/c on, but then i worry that if i were to turn it off the idle would increase too much and be over 1000. Anyone have input on this? Thanks.

Memberofthe600hpkaclub · 06-24-2013, 12:21 PM

Good luck getting it to idle worth a damn...it's all the way behind the motor! Unless you have a lexan firewall it will never be seen lol...pull it apart, clean off any carbon, put back together, ride off into the sunset

Thedriftbadger · 06-24-2013, 12:25 PM

Quote:

Originally Posted by Memberofthe600hpkaclub

Good luck getting it to idle worth a damn...it's all the way behind the motor! Unless you have a lexan firewall it will never be seen lol...pull it apart, clean off any carbon, put back together, ride off into the sunset

I realiZe that cold idle won't be nice, but when it's hot it should be fine. I worry about how it's going to react to seeing 20 lbs of boost regularly though.

zerodameaon · 06-24-2013, 01:06 PM

You might want to go ask this question over on KA-T.org - The Home of 1000+ whp/7 sec Turbo KA's, some remove it, most keep it from what I have seen over there. Its ugly but unless you are looking for it, most people never will notice it.

Thedriftbadger · 06-24-2013, 01:11 PM

Quote:

Originally Posted by zerodameaon

You might want to go ask this question over on KA-T.org - The Home of 1000+ whp/7 sec Turbo KA's, some remove it, most keep it from what I have seen over there. Its ugly but unless you are looking for it, most people never will notice it.

I registered there a few days ago and no one will authorize my account so i can't post new threads.
I figure for a low boost setup on a stock motor it would be stupid to get rid of it. But i worry about how it will handle the low compression and high boost pressures. I was thinking it might not like it, unless you can adjust it with the tune....

zerodameaon · 06-24-2013, 01:13 PM

Yeah got no input on that as its not something I have had to deal with yet. This might also help if you haven't seen it. http://zilvia.net/f/engine-tech/62609-ka24det-faq.html

Memberofthe600hpkaclub · 06-24-2013, 11:50 PM

My new manifold even has a flange welded to it if that gives you an idea of how I feel about not using it...I'm also running ac trust me I have done both ways and you def want it....even with a decent stand alone its still a pita to get it to idle and not jump when ac is on

for reference

06-24-2013, 11:55 AM	#1
Thedriftbadger Zilvia Junkie Join Date: Jun 2013 Location: ontario Posts: 305 Trader Rating: (0) Feedback Score: 0 reviews	Ka IACV removal Just bought a spare ka to build for my turbo. I want to clean up some of the emissions and other stuff. The iacv is the most complicated, ugliest thing i've ever seen on a motor. The one on my new motor is all hacked up so it's pretty much trash. The one in the car works but the rpm hangs for a second which its pretty annoying. Anyway i've been reading a lot about just completely removing it, but i can't find anything about how it will affect the a/c. I use the a/c like 90% of the time. Only time i don't use it is sometimes at night, at the track, or if it gets cool in the winter. I figure'd i could just adjust the idle to be like 800rpm with the a/c on, but then i worry that if i were to turn it off the idle would increase too much and be over 1000. Anyone have input on this? Thanks.

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

06-24-2013, 12:21 PM	#2
Memberofthe600hpkaclub Zilvia FREAK! Join Date: Sep 2008 Location: Florida Age: 35 Posts: 1,038 Trader Rating: (17) Feedback Score: 17 reviews	Good luck getting it to idle worth a damn...it's all the way behind the motor! Unless you have a lexan firewall it will never be seen lol...pull it apart, clean off any carbon, put back together, ride off into the sunset

06-24-2013, 11:50 PM	#7
Memberofthe600hpkaclub Zilvia FREAK! Join Date: Sep 2008 Location: Florida Age: 35 Posts: 1,038 Trader Rating: (17) Feedback Score: 17 reviews	My new manifold even has a flange welded to it if that gives you an idea of how I feel about not using it...I'm also running ac trust me I have done both ways and you def want it....even with a decent stand alone its still a pita to get it to idle and not jump when ac is on for reference