K&N CAI allowing water into the engine - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 24 (permalink) Old 10-01-2012, 10:38 AM Thread Starter
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K&N CAI allowing water into the engine

I have a question on this new intake system installed. Since the old air box and all parts connected were removed to make room for the K&N no.77, its now open to the front grill, well, slightly off to the left side a bit. During heavy rains on the highway, i know its sucking water inside the engine. When I got home last night and pulled the oil cap, there was moisture on it. How harmful do you think this is?


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post #2 of 24 (permalink) Old 10-01-2012, 12:21 PM
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Quote:
Originally Posted by rhobll
I have a question on this new intake system installed. Since the old air box and all parts connected were removed to make room for the K&N no.77, its now open to the front grill, well, slightly off to the left side a bit. During heavy rains on the highway, i know its sucking water inside the engine. When I got home last night and pulled the oil cap, there was moisture on it. How harmful do you think this is?
Very.

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post #3 of 24 (permalink) Old 10-01-2012, 07:29 PM
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Get one of the covers for it. It will greatly reduce the amount of water coming in.


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post #4 of 24 (permalink) Old 10-02-2012, 07:28 AM Thread Starter
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Good idea. I bought this at autoanything.com, I'll check today for the cover.
I pulled the dipstick today, oil is great. I'm running royal purple. The moisture on the cap also went away.


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2006 3.7l Silver black and crome Sport W QT1
K&N cai. Aridium 1X plugs. 1.5" Spider Trax...
Tinted windows gone. Got ticketed for 137.50!! Full Synthetic motor oil and many more mods...
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post #5 of 24 (permalink) Old 10-05-2012, 02:33 PM
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I had the same concerns with my k&n so I made a custom enclosure that anyone can do. Here's the link to my modification. I havent had any water by the intake since, even going through puddles..
http://www.theultimatejeep.com/showt...fication/page2

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post #6 of 24 (permalink) Old 02-05-2013, 10:15 AM Thread Starter
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Went to replace my pcv valve and noticed creamy oil inside, and on the oil cap. So, I ordered the k&N "drycharger" filter cover. Its made of siliconized polyester and fits snug over the filter . if this doesn't keep the water out, i'm going back to the original box and hose.


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2006 3.7l Silver black and crome Sport W QT1
K&N cai. Aridium 1X plugs. 1.5" Spider Trax...
Tinted windows gone. Got ticketed for 137.50!! Full Synthetic motor oil and many more mods...
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post #7 of 24 (permalink) Old 02-05-2013, 01:50 PM
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IMHO, K&N filters are not worth the powder to blow them to he!! and I'll tell you why.. I completely destroyed a turbo charger on one of my trucks with one installed (I serviced the oiled filter as reccomended).. $2200 later.. There was lots of dirt in the intake tube and it sand blasted the fins inside my turbo.. They don't filter well at all.. They also will expell oil onto the MAF sensor and produce engine codes.. There is no better filtering than the stock setup as long as the filter is kept clean..

As far as HP gains on a gas engine, I don't believe the gains are what is advertised on any CAI.. JMO.. I'm not going to get into a pissing match with people that own them, I'm just stating my opinion concerning this type of modification..
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post #8 of 24 (permalink) Old 02-05-2013, 09:07 PM
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Scary stuff. It doesn't take much water to turn your day into a bad one.

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post #9 of 24 (permalink) Old 02-06-2013, 10:56 AM Thread Starter
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Join Date: Feb 2011
Location: pittsburgh pa
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Trim Package: Sport
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Quote:
Originally Posted by Atsah View Post
IMHO, K&N filters are not worth the powder to blow them to he!! and I'll tell you why.. I completely destroyed a turbo charger on one of my trucks with one installed (I serviced the oiled filter as reccomended).. $2200 later.. There was lots of dirt in the intake tube and it sand blasted the fins inside my turbo.. They don't filter well at all.. They also will expell oil onto the MAF sensor and produce engine codes.. There is no better filtering than the stock setup as long as the filter is kept clean..

As far as HP gains on a gas engine, I don't believe the gains are what is advertised on any CAI.. JMO.. I'm not going to get into a pissing match with people that own them, I'm just stating my opinion concerning this type of modification..
I knew the gains would be minimal at best, but like how it dresses up the engine. I'm gonna water test the new "drycharger" bag and hope that its tight, because I don't feel like going through the aggravation to remove the K&N


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2006 3.7l Silver black and crome Sport W QT1
K&N cai. Aridium 1X plugs. 1.5" Spider Trax...
Tinted windows gone. Got ticketed for 137.50!! Full Synthetic motor oil and many more mods...
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post #10 of 24 (permalink) Old 02-06-2013, 11:05 AM
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Quote:
Originally Posted by rhobll View Post
I knew the gains would be minimal at best, but like how it dresses up the engine. I'm gonna water test the new "drycharger" bag and hope that its tight, because I don't feel like going through the aggravation to remove the K&N
They do look kinda cool but there really is no benifit to them and the cleaning process is a PITA and costs a few bucks for the oil and cleaner.. If you drive in dusty conditions, I highly recommend going back to stock as I have seen first hand there non-ablilty to filter properly.. They look good and sound good when you floor it, and that's about it..
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