Snorkelling - Vent Line Check Valves

[whoDEANie]

I'm finally decided to get off my butt and install the snorkel kit I bought months ago for my grizz. It came with three one-way check valves, which I'm assuming are for the front diff, rear diff, and fuel tank. Don't these need to breath both ways?

 

[DaveB]

Are they check valves, or those little "rain caps"...

I wouldn't use them if they are check valves....diffs get hot...expel air....then you hit a water/mud hole...get cool and suck air. With a check valve, it will suck goop in past the seals. Canned Ham has those bellows deals on the diff vents. In 5 yrs on my 07 the diff oil came out clean every time I changed it (9 or 10 times)....you can get those bellows for about 4 bucks from BRP.....just a thought. My bud put one on his RZR front diff instead of extending the vent line. Biggest problem is when he gets on the throttle, the bellows is trying to f%^k off ahead of the Polaris parts. Hahahaha

 

[whoDEANie]

Are they check valves, or those little "rain caps"...

They are one way check valves. Thanks for confirming my suspicions Dave. I'm finding it discouraging that I can't necessarily put my trust in an aftermarket kit - my lack of substantial mechanical experience is what lead me to buy a Performance ATV kit instead of building my own from scratch. Other than the nice air box lid that came with the kit, I'm finding that I could have built a better one from scratch and will probably end up doing so in the end.

As far as the vent lines go, I will be running all of them into the air box except the fuel one which I still need to figure out a decent solution for.

 

[DaveB]

On my 07 I ran the fuel tank vent up under the pod and hung a Briggs and Stratton lawnmower fuel filter on the end of it as a "breather filter".

 

[whoDEANie]

That's a great idea, thanks again Dave. I'll definately look into somethng like that.