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  #13  
Old 10-09-2012, 09:40 AM
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Re: Removing front vents??? HELP!!!

Just a word of caution on this mod (and not to be a downer) but when I had my M5 a popular mod was the very same as this one...we called them sink drains...they were mounted low like that on both sides since the M5 had dual intakes...seemed like a great mod until folks started getting water ingestion into the motors when it was raining, causing CEL's and other damage.

That low spot is right where one of the wheels, at speed can hit a puddle and push the water out forward in front of the vehicle, while the vehicle is moving forward the air intake can suck that water up through and also get pushed in there by force with the impact of the front bumper into the splashed water...similar to when you go through a deep puddle and sometimes get water splashed up onto the windshield while moving at speed...same principle.

Not sure if any motors were seriously damaged but it did cause a number of folks to reverse the mod after a number of CEL's after water ingestion. Some folks tried to create baffles inside the routing before it got to the intake – but that defeated the purpose of the mod in the first place.

Just passing along the info - do not want to debate the merits of it "happening" or not or whether it is possible or not on the Jeep - all I know is it definitely happened on the e39 M5's and most M5 drivers were not plowing around the streets looking for puddles…
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Old 10-09-2012, 01:51 PM
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Re: Removing front vents??? HELP!!!

Quote:
Originally Posted by P-Dawger View Post
Just a word of caution on this mod (and not to be a downer) but when I had my M5 a popular mod was the very same as this one...we called them sink drains...they were mounted low like that on both sides since the M5 had dual intakes...seemed like a great mod until folks started getting water ingestion into the motors when it was raining, causing CEL's and other damage.

That low spot is right where one of the wheels, at speed can hit a puddle and push the water out forward in front of the vehicle, while the vehicle is moving forward the air intake can suck that water up through and also get pushed in there by force with the impact of the front bumper into the splashed water...similar to when you go through a deep puddle and sometimes get water splashed up onto the windshield while moving at speed...same principle.

Not sure if any motors were seriously damaged but it did cause a number of folks to reverse the mod after a number of CEL's after water ingestion. Some folks tried to create baffles inside the routing before it got to the intake – but that defeated the purpose of the mod in the first place.

Just passing along the info - do not want to debate the merits of it "happening" or not or whether it is possible or not on the Jeep - all I know is it definitely happened on the e39 M5's and most M5 drivers were not plowing around the streets looking for puddles…
Yep, that is definitely a valid concern here. I too am a previous owner of a few M3's (just sold my 2011 M3 to buy this SRT8) and I also remember people doing similar mods to increase air flow to CAI's. I guess I'll need to keep an eye on this concern. Perhaps a vent that redirects the air away from hitting the filter head-on would help???
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Old 10-09-2012, 02:05 PM
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Re: Removing front vents??? HELP!!!

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Originally Posted by hubbman View Post
Yep, that is definitely a valid concern here. I too am a previous owner of a few M3's (just sold my 2011 M3 to buy this SRT8) and I also remember people doing similar mods to increase air flow to CAI's. I guess I'll need to keep an eye on this concern. Perhaps a vent that redirects the air away from hitting the filter head-on would help???
Oooph, never thought of that. Good points. I was thinking water would never travel uphill, but if running through a puddle and there is "force" being applied to the water, it could very well travel up the tube and perhaps to the intake.

How about putting on a water cover on the filter itself.
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Old 10-09-2012, 02:20 PM
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Re: Removing front vents??? HELP!!!

Funny part about the e39 M5's was the "sink drain mod" started as a mod for brake duct cooling...then people were like - "why can't I just feed my intakes with this nice cool forced air"

I think one problem with the M5's is that with the dual intakes they were positioned low to begin with on top of the car being low...so take a few folks that would lower the car even further, tweek the sink drains to suck up more air on the outside of the car and the propensity for the M5 intakes to suck up water anyway..."could" be a recipe for disaster.

I saw this post waaaay back when I had my M5...and thought...I have plenty of cool air coming into my engine compartment - stock.

Amazing this engine went as far as it did...

My Successful S62 Engine Rebuild and Intro - Bimmerforums - The Ultimate BMW Forum

Again this is a pretty extreme case and I am not sure he had the infamous "sink drain" mod or not...

But in my mind those 20's on the front of the Jeep would make one hell of a bow wake through a half inch puddle or more...add to that the "suckage vacuum" of the 6.4 with a WOT and I could see some water making it places it was never intended. Maybe even with a heavy downpour and spray off of a semi would create enough water to get sucked up there...never know...
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Old 10-09-2012, 05:06 PM
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I've ran my bwoody w/ dry charger for 7 hours straight though a down pour on a 400ish mile stretch of a trip. The filter sits right where you duct inlet is. I doubt that anything would happen to the Hennessy filter with the ducting.

I ran a similar setup on my WK1 with the Volant and dual snorkel mod. That went though all kinds of weather.

I'd say wrap your filter with a dry charger and don't worry about it.

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