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Cowl snorkel question

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Old Apr 11, 2013 | 12:57 PM
  #16  
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Originally Posted by Metal Head
I know after I did mine it rained like 2 days after, and after that rain I had some stuttering when I first begin to apply the gas kinda like when you have water in the fuel line. I don't know what the issue is but I didn't have this until I did the cowl intake mod.
i think the reason that you got sputtering when you first turned it on was because you got a small amount of water in the intake, only because you connected the hose on the driver side of the cowl...where water can fall through.. just like dukie did, but idk if he has any problems or not in heavy rain.

honestly, i was going to connect the hose to the driver side as well but i got to thinking. the shorter the distance the air needs to travel in order to reach the intake, the better response and better air the motor gets and it doesn't have to try as hard. the same thing goes with having hose go all the way to the passenger side cowl. it takes longer and more energy for the motor to suck in the air...like a drinking soda from a very long straw, shorter straw, less effort. longer straw, more time and effort...does this really make a difference with the cowl snorkel? i have been thinking this over and debating on which side i should hook it up to.. i will use RV sewer hose..maybe pvc like dukie..not sure yet..
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Old Apr 11, 2013 | 02:25 PM
  #17  
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Originally Posted by 1998xjspt
i think the reason that you got sputtering when you first turned it on was because you got a small amount of water in the intake, only because you connected the hose on the driver side of the cowl...where water can fall through.. just like dukie did, but idk if he has any problems or not in heavy rain.

honestly, i was going to connect the hose to the driver side as well but i got to thinking. the shorter the distance the air needs to travel in order to reach the intake, the better response and better air the motor gets and it doesn't have to try as hard. the same thing goes with having hose go all the way to the passenger side cowl. it takes longer and more energy for the motor to suck in the air...like a drinking soda from a very long straw, shorter straw, less effort. longer straw, more time and effort...does this really make a difference with the cowl snorkel? i have been thinking this over and debating on which side i should hook it up to.. i will use RV sewer hose..maybe pvc like dukie..not sure yet..
It does not really work like that. A long solid PVC 3” tube like I use actually enlarges the air box capacity. So it is in fact easier for the motor to get that burst of air. A larger restriction than the snorkel would be the air filter. Not to mention the stock hole in the air box is small.

Truth is a properly ran cowl snorkel will increase your air flow. Limiting factor being the air filter, not the snorkel.
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Old Apr 11, 2013 | 02:31 PM
  #18  
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Originally Posted by EagleXJ
A little off topic, but do you run into any electrical issues going in that deep?
Two problems. One is the alternator. I thought. Turns out the alternator was fine, the water will temporarily mess with the gauge. Second problem was the starter. It quit working. Took it apart and found a brush was almost completely gone and the water/debris caused the bad brush to loose contact. So I cleaned/ greased and sealed the starter. Never a problem since.

A good healthy starter will not have an issue sealed or not.
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Old Apr 11, 2013 | 03:08 PM
  #19  
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I'm getting ready to snorkel mine also. I've seen people say to drill small holes for draining in the stock box... But isn't that defeating the purpose of the snorkel?? If you have holes in the box that's certsinly an easy entry for water. Of your that deep anyways.

I've always wondered how a regular snorkel doesn't suck rain wager. But they have pre filters and drains up top I suppose to shed water. You could always turn the head around on it too.. But in your case with the cowl snorkel you should be fine with routing it into the passenger side.
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Old Apr 11, 2013 | 03:25 PM
  #20  
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The small holes however will prevent water from rushing into the box, the box would eventually fill up but slowly because the water can only get in through such small holes.
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Old Apr 11, 2013 | 04:03 PM
  #21  
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Originally Posted by Metal Head
The small holes however will prevent water from rushing into the box, the box would eventually fill up but slowly because the water can only get in through such small holes.
I have thought about this a lot. The problem is if you are in deep enough to get water through the snorkel, your air box is already under. So the holes would not be able to drain anything, they would just fill the box with water..... The holes would only work if someone poured a bucket of water in your cowl. And the water level was below the holes.
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Old Apr 11, 2013 | 04:05 PM
  #22  
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I don't really understand why people use their stock air box when doing a cowl snorkel set up? Is there some sort of advantage to this
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Old Apr 11, 2013 | 04:07 PM
  #23  
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Now what would be sweet is if the air box would hold a few gallons. Enough to give you a minute to get out of the water even if it was over the inlet.

But we are talking over the steering wheel. And honestly I don't want to go in that deep.
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Old Apr 11, 2013 | 04:12 PM
  #24  
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Originally Posted by EagleXJ
I don't really understand why people use their stock air box when doing a cowl snorkel set up? Is there some sort of advantage to this
Big advantage in regards to water.

A straight cowl intake let's the water go directly into the motor. Using the stock air box the water first has to fill up the box before any gets into the motor. So in my opinion it can really help save your a$$ compared to a direct cowl.

Also using the stock air box helps keep the filter much cleaner, and has better air flow. This is why all stock automobiles have air boxes.

Last edited by holycaveman; Apr 11, 2013 at 04:14 PM.
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Old Apr 11, 2013 | 04:14 PM
  #25  
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I know this was about a cowl snorkel but in regards to keeping water out, I run a pre filter to keep the water and big dust particles out and then my stock air box as a secondary filter. I have my air box completely sealed and I haven't had a water issue yet.

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Old Apr 11, 2013 | 04:18 PM
  #26  
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Originally Posted by holycaveman
Big advantage in regards to water.

A straight cowl intake let's the water go directly into the motor. Using the stock air box the water first has to fill up the box before any gets into the motor. So in my opinion it can really help save your a$$ compared to a direct cowl.

Also using the stock air box helps keep the filter much cleaner, and has better air flow. This is why all stock automobiles have air boxes.
What about the direct cowl setups were the cone filter is located halfway down the tube?
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Old Apr 11, 2013 | 04:20 PM
  #27  
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Originally Posted by EagleXJ
I don't really understand why people use their stock air box when doing a cowl snorkel set up? Is there some sort of advantage to this
Most regular snorkel kits use the stock air box also. It's just much easier to tie into it and make it water tight than to make something up. Its already there mounted etc
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Old Apr 11, 2013 | 04:22 PM
  #28  
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Originally Posted by blankdeluxe
I know this was about a cowl snorkel but in regards to keeping water out, I run a pre filter to keep the water and big dust particles out and then my stock air box as a secondary filter. I have my air box completely sealed and I haven't had a water issue yet.

This is exactly the direction I'm going. Where did you buy your snorkel? I've found a few cheaper ones on ebay
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Old Apr 11, 2013 | 04:28 PM
  #29  
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Originally Posted by NewJerseyXJ609
This is exactly the direction I'm going. Where did you buy your snorkel? I've found a few cheaper ones on ebay

Ebay. Cant justify paying more for a piece of plastic. It came with the pre filter and a typical head that you see on most snorkels. And it shipped withing the US so I didnt have to deal with China shipping.

http://www.ebay.com/itm/Off-Road-Jeep-Cherokee-XJ-Pre-Cleaner-Snorkel-Air-Intake-Installation-Combo-Kit-/390370270754?pt=Motors_Car_Truck_Parts_Accessories&hash=item5ae3e19e22&vxp=mtr
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Old Apr 11, 2013 | 04:31 PM
  #30  
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Originally Posted by blankdeluxe
Ebay. Cant justify paying more for a piece of plastic. It came with the pre filter and a typical head that you see on most snorkels. And it shipped withing the US so I didnt have to deal with China shipping.

Off Road Jeep Cherokee XJ Pre Cleaner Snorkel Air Intake Installation Combo Kit | eBay
I completely agree
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