k and n intake
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Freshman User
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From: quesnel B.C.
k and n intake
Hello agian I am wondering if there are any cheaper alternatives to the ridicoulsy overpriced k&n air filter pod that replaces the stock airbox, I am looking for something for my 1993 4.9L. I wonder if anything has been modded or could be a direct fit from the compact car line that I may have overlooked.
-Does the stock intake have one of those silencers in it, like i found in my old mercury topaz?
-I somewhat recall hearing about using some sort of intake part from a same era diesel does this work?
I know these engines barely respond to these mods but I would like to hear about interesting mods or alternatives people have done.
Thanks
Tyrone
-Does the stock intake have one of those silencers in it, like i found in my old mercury topaz?
-I somewhat recall hearing about using some sort of intake part from a same era diesel does this work?
I know these engines barely respond to these mods but I would like to hear about interesting mods or alternatives people have done.
Thanks
Tyrone
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From: Bored town OH
K&N=waste. Air-raid "cool air" intakes are around 150 I think. Still a waste I think. You could just get 2 cheap cone filters and rig them to the 2 air tubes. Just a thought, I wouldnt bother though. Hell, I'd chop up my stock airbox for free and get the same results.
K&N FIPK: 150ish bucks give or take. Hedman headers: 150ish bucks give or take.
K&N FIPK: 150ish bucks give or take. Hedman headers: 150ish bucks give or take.
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[QUOTE=Schmids4.9l]K&N=waste. Air-raid "cool air" intakes are around 150 I think. Still a waste I think. You could just get 2 cheap cone filters and rig them to the 2 air tubes. Just a thought, I wouldnt bother though. Hell, I'd chop up my stock airbox for free and get the same results.
What do you mean, "chop up my stock airbox"? I've thought about messing with the stock intake tubes (the section before the filter), but I didn't know if that would do more harm than good. Would it be beneficial to just make the opening of the stock intake tube bigger, or drill holes in the tube to allow more air flow into the tube before the filter? Just wondering.
What do you mean, "chop up my stock airbox"? I've thought about messing with the stock intake tubes (the section before the filter), but I didn't know if that would do more harm than good. Would it be beneficial to just make the opening of the stock intake tube bigger, or drill holes in the tube to allow more air flow into the tube before the filter? Just wondering.
Posting Guru
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From: Bored town OH
Chopping up the air box was what I was saying. Like just cutting out chunks of the airbox, doesnt make a difference though. I wouldnt bother doing anything with the air filtration system looking for power.
Elder User
Joined: Nov 2005
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you're kind of on the right track, the first step to getting power is making the engine breathe better, but the restrictor isn't your air filter, its your intake and exhaust components. for the price of a big name air filter, you could get a set of headers, or for a little more pick up a used intake and carb setup, and notice some real gains.
Fleet Owner
Joined: Sep 2005
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From: Lake Tahoe, Nevada
Just fab up a larger tube on the atmosphere side of the air box. They are often necked down to silence the air intake.
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One thing I want to mention really quick is that if your truck is a 93, it is speed density. You will need the throttle body and computer from a 96 because it is mass air. Also, the K&N has been proven to let in too many dirt particles, causing the engine to wear out more quickly. If you think that it doesn't make any difference, Cummins did a study that showed that in their big truck diesel engines, it only took 8oz of dust to cause a complete engine failure over 100,000 miles. That is on an engine that is made to go 500,000 miles + before overhaul, and designed to work under severe conditions at all times.
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Fleet Owner
Joined: Sep 2005
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From: Lake Tahoe, Nevada
I have no data on K&N filtering quality. So when I see a statement like "the K&N has been proven to let in too many dirt particles" I would appreciate seeing the proof. Too many assertions are made without any evidence.
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Joined: Dec 2004
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From: Duncan,OK
You take 2 filters the same size the only way your going to get more air flow thru one of them is for it to be less restrictive. In acheiving less restriction you allow more dirt to pass thru. There was a study done on filter restriction you may be able to google it.
It was quite imformative. And the amount of dirt passing thru some filters was amazing.
The study showed that for the least restriction and least pass thru the AC paper filters had the best of both worlds.
The best way to pull more air without excessive pass thru is to increase filter size there by pulling more air over a larger surface area.
I've seen K&N type filters destroy engines because of pass thru first hand. These engines were 7.3 PSDs with less than 100,000 miles the turbos would be sanded and the cylinders worn to the point of being junk. In all fairness these trucks are in an extreme enviroment ( oil feild ) but with paper filters these vehicles commonly go 300,000 miles. Needless to say the company that owns these trucks no long allows these performance type filters to be used on their vehicles. So in the case of K&N you have to decide if you want performance or engine life. There are better ways to acheive more air flow.
Pat
It was quite imformative. And the amount of dirt passing thru some filters was amazing.
The study showed that for the least restriction and least pass thru the AC paper filters had the best of both worlds.
The best way to pull more air without excessive pass thru is to increase filter size there by pulling more air over a larger surface area.
I've seen K&N type filters destroy engines because of pass thru first hand. These engines were 7.3 PSDs with less than 100,000 miles the turbos would be sanded and the cylinders worn to the point of being junk. In all fairness these trucks are in an extreme enviroment ( oil feild ) but with paper filters these vehicles commonly go 300,000 miles. Needless to say the company that owns these trucks no long allows these performance type filters to be used on their vehicles. So in the case of K&N you have to decide if you want performance or engine life. There are better ways to acheive more air flow.
Pat
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From: Broken Arrow, OK
The only proof I need that K&N filters let too much dirt through is what I've witnessed personally. When a customer brings you a car with 40k-50k miles on it to have a K&N installed and the MAF element is clean, then they bring it back 5k miles later because it runs horrible due to a severely contaminated (with dirt, not filter oil) MAF that tells you something. If I had seen it once or twice it would have bothered me, but when you see the same thing 10 or 12 times there is something to it.
The "diesel tube" mod is done on the 302 and 351 trucks because they come with a gay tube that draws air from right over the radiator. Most 4.9's, 460's and the diesel came with a tube that draws cooler air from in front of the core support. More than likely you already have the diesel tube.
FWIW, on the dyno there was a whole 1.5 hp gain with the entire intake system ahead of the TB removed. That was over a very dirty stock paper filter. Going to the aftermarket for a "cold" air intake is a waste of money.
The "diesel tube" mod is done on the 302 and 351 trucks because they come with a gay tube that draws air from right over the radiator. Most 4.9's, 460's and the diesel came with a tube that draws cooler air from in front of the core support. More than likely you already have the diesel tube.
FWIW, on the dyno there was a whole 1.5 hp gain with the entire intake system ahead of the TB removed. That was over a very dirty stock paper filter. Going to the aftermarket for a "cold" air intake is a waste of money.
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Freshman User
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From: quesnel B.C.
Alrighty thanks for shedding some light on the intake side of things for the 300 fellas, Yeah I kinda thought those k&n's were too good to be true letting in contaminated air is not cool. come to think of it my taurus sho has a k&n that I should be payin a bit of attention to before I wreck the old yamahauler.
thanks
tyrone
thanks
tyrone
