Snorkel?Anyone

[KYJ10]

Not much info when doing a search. Does anyone have one? Anyone have any info or pic's on how to build one. Going over to the fender and up the side of the truck seems doable, but how to connect to the carb and filter has me stumped. Thanks Dennis

[xj2fsj]

I have also wanted to do this mod, but with as little of that "homemade" look as possible. I was thinkin of gettin one of those air cleaner boxes for SBC's, the ones that are solid plastic with two round inlets about six inches long at 45º angles from one another. Then use PVC pipe to the inner fender using a sectioned heater hose as a grommet. The outside is where it gets trickier. It would be best I think to use fiberglass and lots of patience to get a form that works and follows the "look" of our Jeeps.
I have also heard that this setup mimics cold air induction and forced air to a degree that gives :eek: a little more h.p. and m.p.g. :eek:

[TexasJ10]

Try a search for a M715 fording kit. The military version had a kit with a snorkel and a device that pressurized the crankcase to keep water out.

[BIG BAD JON]

Thats some pretty cool stuff! I was thinking about cowl induction for my G-Wag, but now that I know the snorkel does the same thing, Im going to go that route! Thanks TexasJ10! :D

[FSJeeper]

I have a friend with a factory snorkle setup on his M715. I am going to get measurements and make one for mine. I have a really good hydraulic tubing bender that could do this job easy. Won't get around to it until after Ouray but I'll let you know how it turns out.

He paid $125 for the NOS factory snorkle setup a few years ago, now I think they are over $300. Making these from scratch seems to be the best option.

[BIG BAD JON]

Dude, youre gonna have to post the measurements and stuff!

Meanwhile, would we have enough room behind our quarter panels to do THIS? (http://www.off-road.com/toyota/cheaptricks/snorkel/) :confused:

[CowKiller]

one guy on here names scotty has a snorkle on his. i got the pics here. he can send some snail mail.

[Sycho15]

I put a snorkel on my YJ-ish Jeep. You can see the pictures and descriptions HERE (http://www.geocities.com/southbaymisfit/snorkel.htm)

The K&N filter on top is the most expensive part, the rest was 2.5" PVC pipe and 3" flexible air-intake tubing. I think the fitting on the carb came off a Dodge minivan in the junkyard... not too sure about that though. It works great!

[ArtsiFrtsi]

:D Cool snorkle, Synco... I think the only thin I woulda done differenly, would be to have a 90 at the top, to get the ram air effect. :D

[jode]

Originally posted by BIG BAD JON:
would we have enough room behind our quarter panels to do THIS? (http://www.off-road.com/toyota/cheaptricks/snorkel/) Umm...seems like a bad idea....doesn't get the air intake much higher, but it does move it to a spot where it is more likely to intake warmer air. I figure if youre gonna do the work to put on a snorkel, do it right and get it up there...but that's just my .02$ ;)

[J20fan]

Here are a few kits I found that you can look at.kit 1 (http://www.bigelectric.com/manuals/ford.html) kit 2 (http://home.student.utwente.nl/j.e.roelofsen/dwfk.html)
kit 3 (http://m715zone.com/manuals/Chapter_3_Section_3.html)

[Sycho15]

ArtsiFrtsi-
If I had it to do over again I'd probably put a 90 at the top too. I seriously doubt it would get much ram-air effect, but it would get it a little more out of the way of my soft-top channel, and maybe even out of the trees some more. I need to get a cover for it so I don't have to dig the caked up mud out of it after a decent day. The cold-air intake is where any performance gains come from.

You'd be amazed how much sound comes out of a snorkel like this. It sounds like a miniature motorcycle up by your head.

[BIG BAD JON]

Does it REALLY matter how long the snorkel pipe is? I mean, the way I see it, there should be no problem as long as its drawing air from a higher area. And even if there is a problem, wouldnt the cold and ram air effect correct any problems that would cause? :confused:

The page with the Dodge 6x6 shows a VERY long snorkel hose. It looks like it runs all the way down, underneath the body, then back up along the side of the truck. Would this be okay with my G-Wag? :confused:

Oh, and the exaust system should be okay since it faces down and would be like sticking your finger over one end of a straw, and sticking the other end in water, right? :confused:

[ July 30, 2002, 07:48 PM: Message edited by: BIG BAD JON ]

[Don in Missouri]

I've read cold air intake increases hp, but decreases mpg. Not too many of us worried about mpg though, or we'd be driving soemthing else, right?

What about rain water? I've been in a couple puddles where a snorkel would have helped, but that doesn't happen as often as your typical downpour.

[RamJetFSJ]

Snorkles are great an all. Look good on a built rig, but will look pretty silly on a minimal lifted/equiped rig. Anyone contemplated or succeffully made something to suck air from the fresh air vent behing the hood?

It would work sorta like a cowl hood, pulling air from the low pressure area infront of the window, and you could set it up so that rain wouldnt cause a problem, and even make it so you could still use it as a fresh air vent.

Possible?

[beater]

im in the process of doin that now ramjet but it aint gonna be pretty. this thing is a straight up woods beater

[RamJetFSJ]

beater,
Cool, Id still like to hear/see what you did!

I can make it pretty, Im just wondering about functionality.

[Narnian]

Scotty ran it THROUGH his hood, up along his windshield by the door jamb, to a point right above his head. He stopped using it and I don't remember why. I had an idea for running it out of the back of my hood like Scotty did, but using flexible tubing and a float, so that it could sit on the back of the hood until I actually need to cross something deep, and it would rise with the water level as needed. There are plenty of parts I could use to make it work, but I think it would end up looking real goofy.

Besides, if I were to ford water deep enough to cover my hood, I would short out everything in the dashboard including my Pro-jection computer - thereby leaving me stranded in the water. For me there is no point in adding a fording kit until I know how to keep the interior components dry.

[ September 12, 2002, 04:16 PM: Message edited by: Narnian ]

[scotty]

for a brief period my snorkel wasnt functional,as i couldnt find a way to attach it to my samuri airbox once i swapped on a motorcraft 2bbl. i had been using a factory air cleaner withthe carter. luckily a friend finally made me an adapter to use an elbow from a fwd car(a cavelier,i believe) throttle body.sos it has been up and functioning for a long time,even tho i cant find any water deep enuff to cover my hood that i can drive thru without getting a ticket :mad:

i just recently remade it. i got tired of it getting rained in, sos i ran it into the cab and up thru the center speaker hole in the middle of the dashto the top of the windshield. this also took care of it being on one side,now its smack in the middle,so it doesnt matter if im real off camber in the water anymore. not that that happens alot smile.gif but i like it in the middle. i was able to route it so the wipers will still function,but it did require me to make a new glovebox.

but now it sucks in alittle less mud in the mudholes,and i cn wheel in the rain without fear of hydrolocking my engine :D

[ September 12, 2002, 10:56 PM: Message edited by: scotty ]

[beater]

ramjet im runnin mine up to the cowl in the center and will end up being a couple inches higher than the hood. i am using the stock air cleaner to get it there just tunin it around to face the pass. side i will cut a hole in the hood tolet it out. the hole will be covered by a house vent cover(the kind that goes on the outside wall like a dryer vent)which will be pop riveted to the hood.ihe air cleaner will be sealed with homade gackets made from tractor inner tube.im usein a replasment air hose that is a plastic version of the stock one. so.....whatcha think

[Sycho15]

The cold air snorkels bring in give an un-noticeable increase to HP, but on a road-trip they may make a very noticeable improvement to your mileage.

The guys who make Safari Snorkels will sell just the top piece for you to put on some PVC pipe. I've heard from someone who runs their snorkel on his little Cherokee XJ that on road-trips he gets 50 miles more per tank.

A straight 3" piece of PVC pipe will flow 1000cfm. The smaller the pipe and the more bends you put in it, the less CFM it can flow. I would stick to 2.5", run it down the A pillar and enter the engine bay wherever is the most convinient and requires minimal cutting. The back of the hood seems like a good spot (new hoods are cheaper and easier to find than new fenders- if you screw something up). I'd also put the air-filter housing at the top of the snorkel. You could mount some sort of air-box above the cab, or run the (K&N only!) element right out in the open like on my YJ.

To deal with water intrusion... have good door seals! About the time it gets to the window there should be enough pressure for the water to push past the door seals and enter the cab. This is where bilge pumps and bedlinered interiors work well! Also, if you're that deep and going any reasonable speed, I wouldn't be surprised to have the water pushing up the winshield pretty far. Periscope anyone? :D

[Slippery]

Originally posted by scotty:
i was able to route it so the wipers will still functionThat would be very important...if you had a windshield! tongue.gif

[scotty]

Originally posted by Slippery:
</font><blockquote>quote:</font><hr />Originally posted by scotty:
i was able to route it so the wipers will still functionThat would be very important...if you had a windshield! tongue.gif </font>[/QUOTE]LOL :D i do still have a windshield thak you very much. smile.gif its almost the time of year that ill hafta put him back in and put the soft top and doors back on. hopint to make at least 2 or 3 more trips before it gets to that point-i much prefer doorless,topless,windshieldless wheeling tongue.gif

[Slippery]

Originally posted by scotty:
</font><blockquote>quote:</font><hr />Originally posted by Slippery:
</font><blockquote>quote:</font><hr />Originally posted by scotty:
i was able to route it so the wipers will still functionThat would be very important...if you had a windshield! tongue.gif </font>[/QUOTE]LOL :D i do still have a windshield thak you very much. smile.gif its almost the time of year that ill hafta put him back in and put the soft top and doors back on. hopint to make at least 2 or 3 more trips before it gets to that point-i much prefer doorless,topless,windshieldless wheeling tongue.gif </font>[/QUOTE]That's what Carhartts are for...much easier than doors & windshield.

"Topless wheeling"? Hmmmm...(Britney rules)

[andy d]

uhhm when mudding sans windshield do you wear glasses or some sorta eye protection? whabbout low branches? :eek:

[Slippery]

Ooh, good point, Andy...something to think about.

I did figure out that the rollbar was not there as a grab handle. Doing so put's ones fingers 'twixt it and the windshield frame...add a little body flex, and YIKES.

[scotty]

Originally posted by Slippery:
</font><blockquote>quote:</font><hr />Originally posted by scotty:
</font><blockquote>quote:</font><hr />Originally posted by Slippery:
</font><blockquote>quote:</font><hr />Originally posted by scotty:
i was able to route it so the wipers will still functionThat would be very important...if you had a windshield! tongue.gif </font>[/QUOTE]LOL :D i do still have a windshield thak you very much. smile.gif its almost the time of year that ill hafta put him back in and put the soft top and doors back on. hopint to make at least 2 or 3 more trips before it gets to that point-i much prefer doorless,topless,windshieldless wheeling tongue.gif </font>[/QUOTE]That's what Carhartts are for...much easier than doors & windshield.

"Topless wheeling"? Hmmmm...(Britney rules)</font>[/QUOTE]LOL,youre gonna get me all worked up talkin about "britney" and "topless" in the same post :D oh goodness....

andy,i wear glasses anyway,and that is petty much good enuff. i dont really get into mud as much as i used to. it does suck when a branch reachs in and pokes me in the eye, :mad: but that dont really happen as often as ya might think it would- the windshield frame does a pretty good job of defleceting most of em.

the thing that sucks the worst is DUST. when its real dry at haspin, the quads and dirt bikes kick up LOTS of dust. i was hacking up haspin dust for the next week last time we went. next time i will take a bandana,dust mask,or something, and maybe some goggles.

topless... britney... mmmmm.... :eek:

[Dan G]

3" dia pvc duct flowing 1000 cfm?

from http://www.connel.com/cgi-bin/airductm.pl

This is what you input
Flow Rate 1000 CFM
Velocity 20371 FPM (Flow / area = velocity)
Pressure 14.7 PSI (Std press at sea level)
Temperature 60 F (I had to guess at something!)
Duct length 5 FT (This is optimistic)
Duct Roughness 0.7 FT (based on pvc)

These are the results
The duct diameter is: 3.00 inches
The air density is: 0.0764 pounds per cubic feet
Reynolds Number = 545425.90
Friction Factor fa = 0.21592337
Friction Factor f = 17.06247535
loss PSI = 323.86453950
loss inches of H2O = 8973.63866049
loss inches of H2O per 100 ft = 179472.77320982

NOTE THE LOSS IN PSI!!

running it at 650 cfm (again optimistic for our carbs)

This is what you input
Flow Rate 650 CFM
Velocity 13241 FPM
Pressure 14.7 PSI
Temperature 60 F
Duct length 5 FT
Duct Roughness 0.7 FT

These are the results
The duct diameter is: 3.00 inches
The air density is: 0.0764 pounds per cubic feet
Reynolds Number = 354524.83
Friction Factor fa = 0.21592421
Friction Factor f = 17.06264465
loss PSI = 136.83025038
loss inches of H2O = 3791.29257763
loss inches of H2O per 100 ft = 75825.85155261

Much better loss, but still not desireable

Watch the length guys if you intend to do this. Also, remember that each elbow adds MANY equivalent feet of ductwork.

PS, at 500 cfm, the loss is only 81 psi.