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Disclaimer: Hondaforeman.com is not responsible for any damage caused to you or your bike during deep water riding. Install and use snorkel at your own risk.

Special thanks to Russ Fain (Mudlord) for this writeup!!

This snorkel is for a Foreman 450
This snorkel was built as entirely experimental and has not yet been used...TRY AT YOUR OWN RISK!!!
I have had water enter my Foreman’s engine, even with my snorkel on!!! Be aware!!

List of stuff to buy:
2 45 deg. 2in. PVC elbows
2 90 deg. 2in. PVC elbows
3 threaded 2in couplers
1 2in to 1 1/2 PVC reducer
2 22.5 deg. 1 1/2in. PVC elbows
1 1 1/4 to 1 1/2in. PVC reducer
2in. PVC pipe at least 6ft in length
1 1/2in. PVC 3or4 ft. long
1 1/4in. PVC 3or4 ft. long

You are on your own as far as a mounting bracket goes. Mine is a flat aluminum plate 4x6, with an aluminum threaded pipe welded in the middle of it, at an angle. There are also 2 ubolts that fasten it to the racks.

Start out by taking the 90d elbow, and cut about 3inches of 2in pipe and connect the 90 and the 45. Just dry fit it, at this point. (Do not glue yet).

Next cut another 3in piece of 2in pipe and connect the other 45d. If you look at the pics, I am sure you will see what Aim talking about.

Next you will connect the 1 1/2 to 2in reducer to the 90d elbow. Now cut approx 13in. of 1 1/2in pipe and connect it to the reducer.

Next you will slide the rubber coupler on to the end of the 13in. pipe.

Next cut about 10 1/2inches of 1 1/2in pipe. Now connect one of the 22.5in elbows to one end of the 10.5in pipe. Now cut approx. 2 1/4in of 1.5 pipe and connect it to the other side of the 22.5 elbow. Now connect the other 22.5 elbow to the 2 1/4 pipe. Make sure you look at the pic to see how the bend is.

Next you will connect the 1 1/4 to 1 1/2in reducer to the 22.5 elbow. Now cut approx 5 3/4in of 1 1/4in pipe. This will give you a complete snorkel from under the fender to the air box.

Now you will need to decide how you will come through the fender and how you will secure it to your racks. You will have to trim some fender off to get it to the air box as well as some mud flap. Reference the pictures below on where the snorkel goes through the fender. As far as rejetting goes, I didn’t have to. The instructions that come with the kit this one duplicates said to move the clip on the carb needle down to the first slot. They provided another small washer just like the one that is already on the needle. And it said to put both washers under the clip
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I know this sounds like a lot, but in reality it took me about 2 or 3 hours to build. Oh by the way.....all measurements that given were approximates, so double check your own measurements. It will more than likely take you awhile to get the 90 and 45's lined up just right to miss the shocks, so take your time, also the 22.5 elbows have to be just right, so pay close attention there also.

GOOD LUCK!!!

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Good work. The captions are great, made it look easy.
 

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Can we get a pic of where the pipe fits into the airbox. I am curious to see how that looks. Both Robb's and Mudlord's.
 

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I will try to get a good pic when i get my Foreman all cleaned up, she has a ton of mud on her from Friday night. The pipe that goes into the airbox, goes in at a strange angle, and it pushes on the gas line, almost kinks it, but not quite. All in all it is a very good setup. Remind me in a few days to take the pics, or i will forget..LOL

Russ
 

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Well, I decided to go ahead and take the pics, with the gunk and all! So here you are.......
 

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We have made several home made snorkels out of 2 inch ag suction hose which can be obtained from a ag supply store. It links up well with regular pvc fittings and couplers. I also wanted to add, if you are snorkeling an engine it is also important to add an extension to the crank case vent which is located in the bottom of the air box. I run up to where it will actually lay on top of my air filter. You can also add a universal filter to the line. The water getting into the motor usually enters this way. If any water gets in the box it is headed for to engine. Hope this helps.
 

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Thats an interesting idea - so you extend the tube inside the airbox, then up?
 

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Rob, You can either pull the hose off. Plug the hole and cut another one higher, or you can cut a notch in the barrier in the bottom of the box and extend the original one. I always go to wal-mart or the local auto parts store and get the universal filter to fit in the new line. When finished the filter will fit snuggly between the air filter and the top of the air box. This will prevent most of the water entry into your engine, saving you alot of money and down time.
 

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I took my crank case breather and rerouted it up over the carb then down so it has a high point in the line. Same basic idea I guess.
 

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QUOTE ("Ben":m7gpi8xd)
Rob, You can either pull the hose off. Plug the hole and cut another one higher, or you can cut a notch in the barrier in the bottom of the box and extend the original one. I always go to wal-mart or the local auto parts store and get the universal filter to fit in the new line. When finished the filter will fit snuggly between the air filter and the top of the air box. This will prevent most of the water entry into your engine, saving you alot of money and down time.
Do you have a pic of this. It sounds interesting.
 

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QUOTE ("foreman lover":2pwp6nn4)
I took my crank case breather and rerouted it up over the carb then down so it has a high point in the line. Same basic idea I guess.
Yes, this is what I did as well. But it still failed me.
 

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I don't have and pics yet but I will try to get some this weekend. It is almost full proof. The only way water can get in your motor is if your air box fills completely up with water.
 

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snorkel question

ok im fistin to snorkel my 450 es and i was thinkin about usin this style but instead of cutting the plastic and stuff i was goin to run it up the fender to the rack and monunt it like that(like dirty4man did his)i know how to make the snorkel and stuff iwas just wonderin which lines need to be rerouted and where can i get the lil fittins to hook the lines into the pvc pipe i know that the diffs,crankcase,and carb but which lines off the carb do i reroute
 

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you want to route both diffs, front and rear brakes(2front, 1 rear), and the fan. You can get those fittings at home depot or lowes
 

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hey i man thanks that helps alot .... all the lines r run to the sam spot aint they
 

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thats correct, and make sure to run your carb vents to the handle bar or somewhere high, you jus cant put them into the snorkel.
 

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yeah...... what kind of lines do i get to make the vent lines longer i was just goin to go ahead and get hole new ones and run them all up to the snorkel when it mounts on the rack and run them into the side of the snorkle and put the carb vent lines on top thats wh y i was askin where could i get those lil fittins so i could do that thanks for the hel p though man.......... u could just tell me what u think ishould or what u would do ....... it will prolly be monday before i reply back because i m at school and my computer at home crashed on me it wont come back on so it'll prolly be sunday or monday before i reply but thanks anyways man im prolly goin to start workin on makin it saturday dont know for sure though yet
 

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Most any 1/8" ID tubing will work. You can cut off a piece and take it with you to the store. A lot of folks just end up using windsheild washer hose. Don't foget the hose barb unions attatch them too.
 

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I'm doing this snorkel style right now as well. I was wondering if the coupling has to be rubber or could a solid PVC coupling work?
 

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You want the rubber couple for two reasons. First it isolates the vibrations of the motor/airbox. But more importantly it allows you to take it off, when needed.
 
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