Air box HELP

[Jerryg]

I couldn't agree more. The problem is that buying a new one is not an option. If you prove me wrong I'll pay double the oem price to buy it from you. The two pieces are around 120 bucks from Honda. Problem is Honda has had them on backorder for months with no end in sight.

I hate when Honda puts things on intergallactic back order.

It happens way more now than it used to.

Maybe look for used? Ebay?

 

[JMynes]

Thanks @TxDoc and everyone else for the replies. Im going to try a combination of JB Plastic weld and using a plastic welder I'm going to buy from Harbor Freight. I'll plastic weld on the edges I can get to and glue where I have to. A mechanic in town has offered to re-epoxy the rivnuts in that pulled out. If anyone has experience with a good glue in a high heat environment please share what you used. If I am successful in fixing it I'll post pictures, steps, and products used. I'm going to use patience to try and repair, not to wait months on backorder for a new top airbox cover.

@CID I would try your idea on the bottom part of the airbox, but I'm not wanting to make holes in the top clean air side.

Standard JB Weld withstands heat pretty well. I’ve used it inside a Fox 35 model airplane engine to reduce the size of the intake passage, the engine heat and fuel never affected it. I’ve never used JB Plastic, but I wouldn’t doubt it has similar heat resistance.
Harbor Freight’s plastic welder works good. If you apply too much pressure to the heat shoe it will bend upward. Don’t worry, just bend it back the other way. Let the heat do the work.

 

[CID]

When it comes to sealants and adhesives I know almost nothing. My head starts spinning when I walk in that aisle because there's to many options.

Man, isn't that the truth, you damn near have to be a chemist when shopping sealants. Any search engine like Google is your friend, I searched 'best high temperature rtv' and got this on the first page. Just pick a known manufacturer like Loctite and you'll be safe, this stuff has been perfected forever. Don't apply it to smooth plastic, scuff it up a bit for traction.

"When you need high heat resistance, red RTV is the ticket. Any high-heat application should get red RTV, including exhaust manifolds, drive housings, even oven doors. Ultimate Red from JB Weld is sensor safe, so it can be used on O2 sensors. Red RTV is good up to 650 degrees Fahrenheit."

I was surprised at the 650* rating, many epoxies are only good up to 200* and 5356 aluminum welding wire is only recommended up to 500*. All this was from searching for it. As a #oleguy, it really made my life easier when I started going right to 'search' when I have questions.

 

[LarryAmboy]

Thanks @TxDoc and everyone else for the replies. Im going to try a combination of JB Plastic weld and using a plastic welder I'm going to buy from Harbor Freight. I'll plastic weld on the edges I can get to and glue where I have to. A mechanic in town has offered to re-epoxy the rivnuts in that pulled out. If anyone has experience with a good glue in a high heat environment please share what you used. If I am successful in fixing it I'll post pictures, steps, and products used. I'm going to use patience to try and repair, not to wait months on backorder for a new top airbox cover.

@CID I would try your idea on the bottom part of the airbox, but I'm not wanting to make holes in the top clean air side.

Try 3M 5200. It is a permanent fix until you can get a new air box. I’ve used it on many things, mostly marine related, but never failed


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[Jerryg]

Can you look for another air filter box and assembly that uses the same size intake?

 

[NEfarm_ranch]

Can you look for another air filter box and assembly that uses the same size intake?

I've thought about that. The talon one looks like it might work. I haven't found anything online that, says it would. If you got the hoses to work the next issue would be having it fit in the relatively tight soace.

 

[trigger]

I understand your concern but using copious amounts of high temp RTV will handle sealing the airbox around any new penetrations. Hell, that stuff has been holding the International Space Station together for decades.

It's like Frank's Red Hot, I put that sh!t on everything.

 

[hondabob]

Check with the UTV-ATV Salvage yards. It doesn't take much damage to total a UTV so there are lots of salvage yards with them. Start calling and good luck.

 

[NEfarm_ranch]

I finally got around to putting my airbox back together. I've been working on bits and pieces and did the final assembly last night.

First step was to use jb plastic weld on the broken seam I couldn't use an actual plastic welder on.

Above I used wire mesh to reinforce my plastic weld seam.

Finally I had an automotive guy in town use a two part epoxy to reinstall the nutcerts

 

[NTCPrezJB]

Hopefully it seals, holds together and ultimately unbolts for future filter maintenance for ya! 🤞🏻