IAC mounting for a stainless intake - Toyota Nation Forum : Toyota Car and Truck Forums

JetspeedCamry · 01-04-2005, 08:15 AM

If i were to make a stainless air intake tube...how could i connect the IAC tube to it? If i weld a nut or grommet of some sort onto it..how could it accept the metal IAC connection, to make it airtight? I was thinking along the lines of having a nut welded to it..and then pushing a rubber grommet in there. Then the IAC would slide into that. Any suggestions?

mcelligott · 01-04-2005, 11:02 AM

just find a pice of circular metal the size of the piece that the stock tube clamps onto and weld it onto your stainless piece

Toysrme · 01-04-2005, 02:00 PM

Or leave it completely off and just connect a breather filter to the IAC so that it pulls in filtered air.

mcelligott · 01-04-2005, 02:18 PM

Quote:

Originally Posted by Toysrme

Or leave it completely off and just connect a breather filter to the IAC so that it pulls in filtered air.

That doesnt work...you might be thinking of the crankcase breather mod

mobes · 01-04-2005, 02:39 PM

Do you mean the IAT (Intake Air Temperature) sensor?
IAC (Idle Air Control) is a valve on the trottle body.
Both are different than the crankcase breather.

Toysrme · 01-04-2005, 03:59 PM

Sure it'll work. There isn't a differance for the IAC if the hose going to the intake is on it or it's open air. It just connects to the rubber intake hose to breathe in filtered air.

Quote:

IAC (Idle Air Control) is a valve on the trottle body.

The IAT is inside the AFM.

See the crankcase breather air filter mcelligott has on his front valve cover? Put one of those on the IAC air intake nipple.

JetspeedCamry · 01-04-2005, 04:17 PM

Cool. Thanks Toysrme. that solves my problem!.
Question though...the engine isn't going to draw too much air through this pipe is it?
Simply because, the connection for this hose is on the air intake tube, and is after the AFM, which is closed usually on Idle...meaning not that much air gets thru..is this correct? Or does the motor compensate for this..

BTW(What is that large green piping in that picture?? It's HUGE!)

mcelligott · 01-04-2005, 04:32 PM

Haha no, if you take the iac hose off your car wont run.

mcelligott · 01-04-2005, 04:33 PM

Trust me, mine used to pop off all the time and when you release the gas your car studders and dies.

JetspeedCamry · 01-04-2005, 05:07 PM

Quote:

Originally Posted by JetspeedCamry

Question though...the engine isn't going to draw too much air through this pipe is it? Simply because, the connection for this hose is on the air intake tube, and is after the AFM, which is closed usually on Idle...meaning not that much air gets thru..is this correct? Or does the motor compensate for this..

BTW(What is that large green piping in that picture?? It's HUGE!)

Ok..let me rephrase it...i'm not taking the hose off now..Toysrme said that I can use a small filter. If I use that instead of connecting it to the air intake tube...will there be too much air running through this IAC? Simply because the connection to the air intake tube is after the AFM. And when the car is at idle..the AFM is closed right? So does that restrict the air going to the IAC thus controlling the idle? Or is that done automatically by the IAC?

And those green pipes in the pic....!!

Toysrme · 01-04-2005, 05:17 PM

Common misconseption. The AFM flap does not cause any real measureable restriction so don't worry about it. At idle it will be sucked open a little bit by the vacuum. at WOT it should be most of the way open, depenidng on RPM/Airflow.

It's your call, try it and see. Take the hose off the IAC so it draws free air, and plug the hole on the intake. I bet it runs fine

JetspeedCamry · 01-04-2005, 05:20 PM

Ok Thanks. Just wanted to understand what i was doing!
Looks a new stainless intake it on its way! Hehe.

JetspeedCamry · 01-04-2005, 05:23 PM

And just another qwiky..
That crankcase breather in the pic there...iis it a good idea? Because I could get two of the same filter at once.
Mine has a hose going from the rocker cover to near the TB. If I put one of these filters on...what do you do with the hole on manifold? Do you completely remove the 'oil resistant' hose and plug the hole on the manfold..and put the filter on the rocker cover?

Thanks.

Toysrme · 01-04-2005, 05:39 PM

Seal all the holes on the intake.

Otherwise you're sucking in un-filtered air, it will probably whistle a bit, and it will make the intake sound veery loud.

JetspeedCamry · 01-04-2005, 05:41 PM

So good idea to get another filter on the crankcase ventilation?
Any particular type i need, or just any of these small filters?
Thanks.