Snorkel on a CJ - JeepForum.com
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post #1 of 27 Old 09-20-2011, 02:11 PM Thread Starter
tdkask
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Snorkel on a CJ

So I took my '80 CJ7 I purchased back in April out for it's first real "offroad" adventure. We were out on the Outer Banks of NC for a local club sponsored beach cleanup not long after Hurricane Irene and there were a lot of deep "puddles" on the roadways, several 3ft or so deep, so obviously we saw an opportunity to go play. Once, only briefly, I got a little water in the carb and spit steam out the back for a minute or so. This was probably because I was unexperienced and went a little too fast through the water (maybe 10-15 yards across). Either way, with 33's and about 4" lift, I did get a little water ingested.

So I want to know at what point I would benefit from a snorkel? I hate the idea of a Safari or similar snorkel on a CJ, so would have to make one that looked more correct. Does it even make sense? By the time I get water to the top of my carb isn't it a point where the whole engine (including alternator and distributor) are having other problems anyway? At what point am I just not going to make it any deeper without more lift/tire?

EDIT: would it be helpful to just use a "riser" to raise air cleaner to barely clearance hood? (258 with MC2100) Or maybe a riser between intake and carb to raise carb and create better velocity into intake?
Finally, and suggestions for a style or snorkel that looks classic on a CJ? Thanks for any info/suggestions.


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4" lift,tube fenders,comp cut_37s on H1 rims
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post #2 of 27 Old 09-20-2011, 04:19 PM
Sedorbrian
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You can run it through the firewall, ive seen it done before. The cab usually stays dryer, so if it comes ought near the heater or something, it would work without the big snorkel going up the windshield. Im building a metal one that doesnt actually conect to the windshield, but alongside it, so i can still fold it down.
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post #3 of 27 Old 09-20-2011, 04:22 PM
BrandonJames
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Quote:
You can run it through the firewall, ive seen it done before. The cab usually stays dryer, so if it comes ought near the heater or something, it would work without the big snorkel going up the windshield. Im building a metal one that doesnt actually conect to the windshield, but alongside it, so i can still fold it down.
Have fun ripping it off on a tree branch
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post #4 of 27 Old 09-20-2011, 04:37 PM Thread Starter
tdkask
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Quote:
Originally Posted by Sedorbrian View Post
You can run it through the firewall, I've seen it done before. The cab usually stays dryer, so if it comes ought near the heater or something, it would work without the big snorkel going up the windshield.
I don't expect to even ever fold mine down, I just don't like the looks of a more modern design on my CJ... just personal preference. And not sure what DIY would look right and not cobbled together. I thought about the inside-the-cab approach, but bet it'd be really loud.

Again, at what point can I expect failure of other components? I mean, there is so much that is same height or lower than my carb... but nonetheless, I made it through.

What approaches have been tried, and with what results? Pics?

Thanks again.

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4" lift,tube fenders,comp cut_37s on H1 rims
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post #5 of 27 Old 09-20-2011, 04:49 PM
hybridmoments
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If you weren't worried about altering anything I feel like the most original design without modernizing the CJ look too much would be a humvee style snorkel.


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post #6 of 27 Old 09-20-2011, 04:53 PM Thread Starter
tdkask
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yeah, I was liking that idea a little... but thought I might need it a little higher, as the water rushes over the hood a little at the same time it's high enough to get into the carb inside the engine bay. What's the experience here? Anyone tested these out relative to just carb/air cleaner?

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4" lift,tube fenders,comp cut_37s on H1 rims
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post #7 of 27 Old 09-20-2011, 06:06 PM
Erik719
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Quote:
Originally Posted by hybridmoments View Post
If you weren't worried about altering anything I feel like the most original design without modernizing the CJ look too much would be a humvee style snorkel.
That is totally bad @$$!! Do you have a write up on how you did it? I want to copy it!

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post #8 of 27 Old 09-20-2011, 06:11 PM
ctappan94
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that's on a JK, right? That windshield wont fold down and if you put that on a CJ, wont it not allow you to put the windshield down without removing the snorkel?
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post #9 of 27 Old 09-20-2011, 06:19 PM Thread Starter
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You are right... on a CJ it would hinder the folding down of the hood. I don't think it'll be an issue for me, especially with the YJ family bar and windshield spreaders.

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post #10 of 27 Old 09-20-2011, 07:18 PM
Erik719
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Quote:
Originally Posted by ctappan94
that's on a JK, right? That windshield wont fold down and if you put that on a CJ, wont it not allow you to put the windshield down without removing the snorkel?
Yeah, guess you are right. Damn!

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post #11 of 27 Old 09-21-2011, 02:07 AM
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This is the one Chris78CJ7 came up with, it is real bad (in a very bad way). It would work unless a wave was coming at you across the bonnet, in which case you may want to turn it round, easy enough as it is plastic drain pipe. I also imagine the top section would unplug fairly easily to lower the windscreen.

An upgrade to this would be a cowl vent cap on top instead of that 90 degree bend, they come in black as well as grey and would be all matching and would allow enough air to get to the filter. You could carry a 3 foot length of pipe with you to extend it for really really deep river crossings.

It looks uncannily like that JK above and you could also write RAIDER on it or something and pretend it was one of those expensive store bought snorkels.

The more I look at this the more excited I become......... time for cold shower.
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post #12 of 27 Old 09-21-2011, 02:31 AM
John Strenk
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Yes I think it should point the other way just like the fresh air vents that sit in the same location. Anyone who drives a CJ and looks at thier hood in a rain storm will easily see the rain drops going forward.

I think if you want that Classic CJ look you need to cut out the hood \







Still should work on getting your distributor and alternator and axle tubes waterproof also. JH uses an air compressor to keep positive air pressure in these parts.

Of course don't go in to DEEP.



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post #13 of 27 Old 09-21-2011, 02:39 AM
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^^^^^^^^^^
Τhat's what i did on my m38a1 many years ago.
You can't get more original

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post #14 of 27 Old 09-21-2011, 05:38 AM
waterdowg
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What is the minimun size tube that can be used for to make a snorkle. Got some ideas, but need to know the minimum size is.
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post #15 of 27 Old 09-21-2011, 06:25 AM
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Don't forget another major benefit to a snorkel. Giving the engine much needed cooler air. It will run much better giving you the correct HP, torque and MPG that you should be getting! My issue is trying to figure out how to mount them to the carb. We need more close up view of this...

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