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How to seal airbox

26764 Views 10 Replies 8 Participants Last post by  Redleader20
I believe water is getting into my airbox through the lid when crossing deep water. I have a snorkel and differentials vented as well as the carb vented to the snorkel.

Using RTV gasket maker is it possible to still be able to open the airbox or do you need to break it apart each time? Im not sure if im supposed to apply it then stick it closed while wet, or apply it to the lid and the airbox let each dry then compress them closed? Any help appreciated.
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I would use 100% silicone and run a bead around the edge/bottom of the lid where the gasket is and let it dry completely. Then, just put the lid back on. Don't make the bead too big or you won't be able to fasten the lid down. You should be able to take it on and off, this way, without breaking it loose every time. Hopefully you can get the lid closed all the way like this, but if it doesn't work, you will have to put the lid on while it's wet. If you have to put the lid on while it's wet, you will have to have new silicone every time you remove the air box lid.

Try not to use an excessive amount of silicone, because it might break off and get in your carb. Also, make sure water isn't getting in from the drain tube in the bottom of the air box.
What's this about venting the diff's?
The diffs have vent hoses running from them, too, and most people run them up high with the snorkels to keep water out of them.

If you use silicone and make a bead, you'd better make sure the bead is the exact same size all the way around or water will seep in through the thinner spots.
This is true. Make sure the bead is a uniform size all the way around.
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