Another RAM AIR idea... :)

[BigDave]

Today while changing the plugs in my '94, I dropped something and had to crawl under the front end a little. While there I looked at the air intake. I found the baffle that limits the cold air that the engine can suck. Well, I removed the baffle next to the radiator and flipped the rubber skirt that sits next to the radiator so that it directs air to that opening so that the intake can suck cold air. I don't know how much it helps though because I have holes in my airbox.

Anyone else done this? I am trying to think up some ideas to get at least a cold air induction setup going. Some of my ideas involve moving the battery and the wide attachment from a vacuum cleaner (the wide, skinny one that funnels into the hose). I'll let you know my plan when I get some more out of my head.

In any case, any one else had ideas along this line before or implemented?

Also, would the route of the ducting matter in the the curves were smooth (like mandrel bent tubing has smooth bends)? I'm just wondering incase I decide to try something with PVC.

Thanks,

Dave

 

[aldive]

What difference ( than a,bient ) intake air temperature do you think you will get?

 

[Jason_25]

Cold air maybe, but not ram air, it only works at speeds of 100 mph +.

Aldive did a test of his IAT while driving and it only showed a couple degrees above ambient and that's with an open element filter setup. Just an FYI.

 

[88vert]

I have my intake built out of pvc,then I got a KKM on the end of that,I left the bottom half of the airbox on the truck then got some real thin aluminum to go around the filter and tie into the breather on the lower half of the air box the aluminum decreased the filter temp by 13 degrees and does not restrict it at all

 

[ChuckyD]

Aldive is also in FL where its 90 degrees outside anyway... some places are like 70 degree outside temp.. and there is no way the temp coming off my engine is anything less 90 degrees... so theres at least a 20 degree difference right there. now if your running a tube to somewhere where theres outside air coming in.. thats pretty good!

 

[RedBeard]

At 35 MPH or higher @ 2500 rpm or higher my OBD-II scanner shows IAT to be almost exactly the same as the temperature outside. As soon as I slow down to 35 or below and let off the throttle, IAT begins to climb quickly.

-RB

 

[aldive]

Originally posted by RedBeard
At 35 MPH or higher @ 2500 rpm or higher my OBD-II scanner shows IAT to be almost exactly the same as the temperature outside. As soon as I slow down to 35 or below and let off the throttle, IAT begins to climb quickly.-RB

I experience the same results here in sunny Florida.

Chucky, in the winter here it is a lot less than 90 F ambient anf guess what the IAT is still very close to ambient.

 

[ChuckyD]

I dont konw.. i aint buying it. I have herd stories that when poeple first installed the KKM they were getting pinging. It was suggestioned that they were getting to much hot air coming off the motor... and were told to redirect it someway.... and as a result of the redirection the pinging stopped... can you explain that?

 

[aldive]

Prove it yourself... monitor your OBD scanner for IAT.

 

[ChuckyD]

nehh... its one of those things that you try to do to get some more HP and any gains you get are prob psychological anyhow.. lol

I believe you.... makes sense... at a cruising speed the external air is swooping in form all angles...

 

[BigDave]

Until I get the sack to put a hole in my hood and make a scoop, I know that I am not going to see and real power gains, but....

It doesn't hurt to try and direct some cooler air to the air box at a higher rate. I was just curious to see if anyone else had tried this and what their results were.

I'm sure that the gains I'm feeling are more from cleaning the MAF and replacing my spark plugs, but I thought it was a pretty nifty idea.

Dave

 

[yob_yeknom]

You're not going to direct air into the intake any faster than it already is going, unless you get a supercharger. The vaccuum created by the pistons going down in the cylinders pulls in air. It pulls in X amount of air, anything short of supercharger will not 'force' anymore than X amount in.

What you should be shooting for is a place to pull in cooler air, as you are doing. Mandrel bent tubing is not going to matter, your filter will do the most restricting anyways. Wrapping your intake with insulating tape may help with air temp.