Recirculation Valve for MAF vehicles

Information on the naturally-aspirated KA24E and KA24DE engines.
Turbo 510
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Joined: Thu Jan 02, 2003 10:45 am

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It might fix the problem. The reason that JWT says to recirculate the BOV is that when the valve opens, it vents the pressurized air to the atomosphere creating an ultra rich condition since the system thinks that all of that vented air is going into the motor. By recirculating the air it remains captured in the system and the mtering is correct. The amount of load placed on your system will tend to magnify the condition (such as shutting down the throttle after a full boost load). The recirculation setup works great unless you are someone who has to hear the whoosh after every shift that the BOV makes when venting to the atomosphere.


Structure240sx
Posts: 5615
Joined: Sun Oct 06, 2002 5:04 pm

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cuz that metered air will go back into the intake after the maf so it will never be lost. that problem u have with it stalling is from the lighweight flywheel. the revs come down too fast its exactly the same in my car. i also have a lightweight driveshaft tho

MarkEmark
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Joined: Sun Aug 25, 2002 6:25 pm
Car: fully-built '95 240sx KA-T
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OT---98KA24DET---I'm running a similar setup to you; I'm waiting for my JWT ECU so I can install the 370cc injectors. Any idea how much power your making at the wheels (or crank) with your setup? Any times?

Also, Structure240sx--What turbo kit are you using? NSPORT or FMAX? Any pics of the intercooler piping (both sides)/underneath the car/where the pipes loop around?

Thanks...

Structure240sx
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Joined: Sun Oct 06, 2002 5:04 pm

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its the nsport kit ill get soem pics tomorrow for u. i am eventually goin to get a custom cold pipe made so i can get a kyo rad or sumthin thicker. the coldpipe in the kit is about 1/2" away from the rad

MarkEmark
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Car: fully-built '95 240sx KA-T
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Well let me know when you ditch the cold pipe...I might take it off your hands :)

How long is your intercoler, from the tip of the inlet to the tip of the outlet? I determined I can't fit anything bigger than 30" tip to tip in my bumper...

Sorry for the hijacking.

Still waiting for 98ka24det's response :)

mean green s14
Posts: 253
Joined: Wed Oct 01, 2003 2:21 pm
Car: driving like a retard

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the core of the nsport intercooler is 25 inches x 12 inches and 3 inches deep , with end tanks it is 32 inches from inlet to outlet.

MarkEmark
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Car: fully-built '95 240sx KA-T
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mean green s14 wrote:the core of the nsport intercooler is 25 inches x 12 inches and 3 inches deep , with end tanks it is 32 inches from inlet to outlet.


That is one insanely massive intercooler. I can't have anything bigger than 30x8x2.5 unless I want to do some cutting (which I don't). 12" high makes you ditch the bumper support, eh? Or just trim it quite a bit?

Let me know how it goes 98ka24det

mean green s14
Posts: 253
Joined: Wed Oct 01, 2003 2:21 pm
Car: driving like a retard

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go to jgy customs on the net they sell an intercooler much like what your looking for.

MarkEmark
Posts: 1857
Joined: Sun Aug 25, 2002 6:25 pm
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Yes, they do..unforunately it's too thick (I'm gonna re-measure see if it will fit with minimal trimming). Plus, i'm extremely disappointed in how that business is run.

Marc

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klattr1
Posts: 1130
Joined: Sat Sep 28, 2002 1:18 pm
Car: GT42R powered S14/KA
Location: Charlotte, NC
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recirculate that bad boy. Believe me, you will still hear it!My car runs so good recirculated(driveability). I know you can prolly fix it with SAFC but believe me, you will still hear it. I have a Greddy Type S and it sounds great at 11-12 psi so far.

Structure240sx
Posts: 5615
Joined: Sun Oct 06, 2002 5:04 pm

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yea my hks ssqv is recirculated and u can hear it loud and clear even when jsut the small valve opens at 1psi or less. people driveing around me can hear it when im beating on it over my exhuast and wastegate

Structure240sx
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Joined: Sun Oct 06, 2002 5:04 pm

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btw i have pics of the intercooler pipng for u on my cardomian site check my sig. i would post them but i have a mac laptop now and i dont know how to resize pics yet on it


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