RTH - Fabulous Fabrications Snorkel install

[kcjaz]

Hey @radman, @grinchy and @1world1love or anyone else who has installed this snorkel. Do I ditch the OEM slanted air flow thing that goes into the fender and the air box attaches to and connect the FF silicon elbow directly to the air box?

Seems like that is the idea but I’m not seeing happening. It’s going to need a lot of persuasion. Do I cut the foam off the oblong opening and lube it up?

 

[radman]

Yes, that’s the only reason you take out the box - to remove that part. The foam peels off the airbox.

Then jam the flexible 90 onto the odd shape of the box. You’ll need a bigger clamp.

Short end of the 90 goes on the box.

 

[kcjaz]

Yes, that’s the only reason you take out the box - to remove that part. The foam peels off the airbox.

Then jam the flexible 90 onto the odd shape of the box. You’ll need a bigger clamp.

Short end of the 90 goes on the box.

Thanks. Got it on. Just didn’t seem right. Silicon spray was key.

 

[1world1love]

I have been crazy busy but plan to do this install next week. Did anybody go ahead with installing a one-way valve in the air box?

Im wondering if there is a consensus about size and placement.

I‘m also wondering what people do when they wash the truck. This occurred to me the other day when I was spraying off the truck with a high-pressure hose. I know this isn’t specific to the FF snorkel but was curious generally.

 

[kcjaz]

I have been crazy busy but plan to do this install next week. Did anybody go ahead with installing a one-way valve in the air box?

Im wondering if there is a consensus about size and placement.

I‘m also wondering what people do when they wash the truck. This occurred to me the other day when I was spraying off the truck with a high-pressure hose. I know this isn’t specific to the FF snorkel but was curious generally.

I am wondering the same. I posted a question in the group by thread. The "duckbills" I can find on line either seem big (they say 1 1/2") or there is no dimension info. Little inline check valves could be used (it appears @linuxgod did this) but I'd be concerned about how much water head it takes to push open the check valve. An inch of water is not very much pressure but I don't want an inch of water in my air box.

 

[lx200inAR]

If that’s an issue, maybe a barb in the air box with a length of hose running down to the frame with the one way valve in the end of the hose.

 

[linuxgod]

I am wondering the same. I posted a question in the group by thread. The "duckbills" I can find on line either seem big (they say 1 1/2") or there is no dimension info. Little inline check valves could be used (it appears @linuxgod did this) but I'd be concerned about how much water head it takes to push open the check valve. An inch of water is not very much pressure but I don't want an inch of water in my air box.

The check valve I used will open with a few drops of water. But mounted vertical even a small backpressure closes it

 

[1world1love]

The check valve I used will open with a few drops of water. But mounted vertical even a small backpressure closes it

Any pics?

 

[kcjaz]

The check valve I used will open with a few drops of water. But mounted vertical even a small backpressure closes it

How did you put it in? There is really no clearance under the existing hole. Seems like you’d have to drill a home in the wheel well.

 

[Wafflroo]

Plastic bag and some painters tape works while I spray it off. I attempted to spray it without the bag and noticed water in the airbox after. I sealed the one drain hole in the airbox. The only times I’ve had water in the box was after cleaning without the bag.

 

[linuxgod]

How did you put it in? There is really no clearance under the existing hole. Seems like you’d have to drill a home in the wheel well.

I don’t 100% recall - I either drilled to the side of it and mounted it at a slight angle or I opened the existing hole a bit. I think it was the former. I can take a photo this week if you need it.

I used a bit of non-silicone RTV to seal and hold it in place.

 

[kcjaz]

I don’t 100% recall - I either drilled to the side of it and mounted it at a slight angle or I opened the existing hole a bit. I think it was the former. I can take a photo this week if you need it.

I used a bit of non-silicone RTV to seal and hold it in place.

A pic would be appreciated. Also, why non-silicone RTV? What's wrong with silicon in the airbox?

 

[linuxgod]

A pic would be appreciated. Also, why non-silicone RTV? What's wrong with silicon in the airbox?

I heard years ago silicone can cause issues with certain sensors. NFC if that's still true or it this would even apply here.

I'll snap a pic and post it. It's unexciting.

This is the valve I used, btw

Amazon product ASIN B07NTY936C

 

[linuxgod]

Not sure if it helps, but here's the valve below in the center, RTV'd into place. So much Moab mud...

Photo of the inside. I filled the original hole and drilled a new one near it. A bit of dust I need to clean up...

 

[kcjaz]

So my check valves came in today. I tested how much water column it takes to open the valve. It’s about an inch from the from the center of the valve. I’m going to mount it in a short piece of tubing and call it good.

@linuxgod, have you tested yours by pouring water in your intake and seeing if it all drains?

 

[prharper]

Not sure if it helps, but here's the valve below in the center, RTV'd into place. So much Moab mud...
View attachment 2964695

Photo of the inside. I filled the original hole and drilled a new one near it. A bit of dust I need to clean up...

View attachment 2964696

I've found sediment in my (edit) airbox at times. Any concern that would clog the check valve?

 

[kcjaz]

I've found sediment in my (edit) airbox at times. Any concern that would clog the check valve?

definitely a possibility. The duckbill valves are a lot bigger and would never clog but I don't see how to install one on a US airbox. The check valve I bought is very small so I think clogging is a concern. It would be easy to blow out but you'd have to remember to check it. Maybe another approach would be to only use the check valve when wheeling where water crossings are possible. 99% of the tine the stock hole is just fine. Or just plug the hole before a water crossing.

 

[linuxgod]

So my check valves came in today. I tested how much water column it takes to open the valve. It’s about an inch from the from the center of the valve. I’m going to mount it in a short piece of tubing and call it good.

@linuxgod, have you tested yours by pouring water in your intake and seeing if it all drains?

View attachment 2967076

I have, I poured in just a teaspoon of water and it drained immediately.

 

[linuxgod]

I've found sediment in my (edit) airbox at times. Any concern that would clog the check valve?

Yes. In that case you’re not any worse than not installing one and just sealing up the hole with RTV (which iirc is what arb says to do)