Napa 300LPM Air Compressor Pressure Switch + Universal Fitting Mod

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In this video, I go over how to modify the Napa 300LPM Air Compressor so that it works with other air accessories commonly found in your garage. I show you how to install a pressure switch and the universal fitting.
Kevin's Video for a safer method to this mod: • Maxi Trac Dual Air Co...
Parts:
1/8" NPT Pressure Switch amzn.to/3J0sMKf
1/4" NPT Universal Fitting of your choice amzn.to/3qWDefV
Special Tools:
1/4" NPT Tap www.lowes.com/pd/IRWIN-HANSON...
Tru-Blu Pipe Sealant amzn.to/3DvDFCV
Teflon Tape (Harbor Freight or Home Depot)
Tools:
Dremel with sanding bit amzn.to/3LCwOdD
Wire Cutters amzn.to/3JYAi9U
Female Wire Connectors amzn.to/3LzckCz
Drill Bit Set amzn.to/3iYaoHv
Center Punch amzn.to/3J0D4dC
Pliers amzn.to/3u1AGz1
10mm wrench
3/4" or 19mm wrench
Screwdriver
Other:
Air Inflator Chuck amzn.to/3iWeLTg
Tools:
► Buy me a coffee if I helped you with this video! www.buymeacoffee.com/phorunner
► Support this channel by buying some 4Runner Merch! teespring.com/stores/phorunner
Disclaimer:
Due to factors beyond my control, I cannot guarantee against improper use or unauthorized modifications of this information. I assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. I recommend safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond my control, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not me. Enjoy my videos.
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[@asablack1364]

Very informative, thanks for sharing.

[@autobotsvsdecepticons9165]

You do a very good job making these videos, thanks!

[@PhoRunner]

Thanks bud!

[@dylanworkley2068]

Awesome video man! I wish I had been able to get one of these compressors at Napa before they sold out

[@PhoRunner]

They’ll be back!!

[@Shrek-is-Love]

@PhoRunner They are back. Currently $157.

[@Juan234alv]

Great video. Weekend project found

[@aaronduffy2839]

Great Video and simple and great explanation and clear

[@PhoRunner]

Glad it was helpful!

[@VCV_Travel]

Excellent! You won a new subscriber!

[@PhoRunner]

Welcome aboard!

[@midnightzombie2811]

Awesome video!

[@PhoRunner]

Thx

[@arlenewolf5260]

I appreciate both of your videos. The seriousness of the switch is not articulated as well as it should be (if you are converting to the standard gas station fittings). This unit comes with an odd ball air fitting set up so the unit will always free flow when running. The attached fitting obviously minimizes this compressors capability's. Also the included hose is so bad that when I touched it after it sat in the car for a month the vinyl was off gassing so bad that the hose became disgusting. It was nasty I mean it was so slimy and gooey to the touch, that I needed to immediately replace the hose and that prompted me to start the fitting and pressure modifications. Once you adapt and add the standard 1/4" gas station fitting and there is nothing hooked up AND flowing, the compressor can and probably will instantly have a catastrophic over pressure failure. Your way of doing the electronic hookup is by far more clean and professional. I am going to wire it your way and mount the pressure switch externally like in the other video. I don't know why the other video showed cutting the wire. I don't do Overlanding, but most of the other 12V inexpensive compressors are mostly a huge waste of $$$$. This one works super fast and wont burn out before the tires get filled. My only wish is that they go to a more efficient motor that does not draw 90 AMPS.

[@PhoRunner]

Thanks for the extra info on the hose!! Yeah not sure why folks cut it haha

[@oldschoolisnewschool]

Good job on the video.

[@PhoRunner]

Thanks sir

[@mishomishev3152]

Awesome idea.

[@PhoRunner]

Thx

[@day1fishing603]

Awesome thanks for the info

[@PhoRunner]

No problem!

[@MrWeaponlord]

Something worth considering to install is a Viair Check Valve between the coupler and manifold. It keeps the line pressure away from the compressor. Meaning the motor won't have to start up under 90-120psi every time. Less stress and fewer peak amps drawn.

[@PhoRunner]

Smart

[@MrWeaponlord]

@@PhoRunner been reading up on why this style compressor dies and people seem to associate it with the motor starting under load. Also the Viair website mentions how their check valves work in that sense.

[@speedsterspeedy2146]

Carnicero! Hahah I have the same compressor from napa in box. Imma do that mod. Thanks big dawg

[@PhoRunner]

Be extra careful with the tap :)

[@toddthomas3226]

Another great video

[@plutonium76]

I picked up one of these pump last year and since installed the pressure switch like you did. I suggest you take the two pump head apart and clean it out really good. Quality control from China is lacking and I found a lot of metal shavings and casting debris in both my pump head.

[@PhoRunner]

True… I need to lube mine up. I know alot have reported one side being dry

[@plutonium76]

@@PhoRunner there's a Facebook Group that is dedicated to these pump. Pretty good enough if you weed out the noise.

[@Hmoob101]

Nice way to hide the switch another alternative if you don’t want to drill the existing 1/8 hole you could add a 1/8 npt to 1/4 npt adapter

[@IronMountainPlumbing]

Will this work with the new black rebranded Napa compressor? Assuming they’re the same and everything will still fit

[@adventure_next6869]

Question, why a 1/4 tap but a 1/8 pressure switch?

[@PhoRunner]

The oem hole is 1/8” so the pressure switch will go there. The new hole for the new quick fitting is 1/4”.

[@cwbolyard1]

Does it matter what the "on" pressure is? I understand the off should be relative to the compressor but does can the on be too high?

[@PhoRunner]

Id get a lower psi pressure switch. Doesn’t really matter really

[@Kirko_bangz]

I’m a little late to the party on this, but just recently found out about this compressor. How has it held up?

[@PhoRunner]

So far so good

[@RebeccaTiffany1]

Is doing pressure cut of switch mod still worth it when using a 4 hose kit? My compressor already has US standard 1/4” fitting but it doesn’t have a pressure shut off, I plan to use a 4 tire hose kit

[@PhoRunner]

It’s not really necessary tbh

[@rydfree]

I would always add one just for the safety aspect . If you get distracted or walk away while you are airing up the compressor would keep pumping until a tire or the hose blew.

[@PhoRunner]

The hose will likely go first

[@TheTbust]

Were you able to find a place to mount the compressor?

[@PhoRunner]

nope I haven't but the cargo area in the rear hatch seems like a spot that could work with some mods.

[@t94zskss47]

When you loosen the manifold to leave the pressure switch at the bottom did the manifold not leak?

[@PhoRunner]

It did not

[@alh5470]

Mine has a leak after doing it. Did u find a fix?

[@t94zskss47]

@@alh5470 I did it and mine didn’t leak I was just curious if it leaked before I did it.

[@4bvenom733]

Is it hard to get them now

[@PhoRunner]

Yes it is

[@4bvenom733]

I tried to purchase one but always out of stock smh

[@Tanner731]

So not sure if you have any suggestions but my air pressure switch seems to not function. Bought two from Amazon and neither shut off the compressor

[@PhoRunner]

Does it have a leak?

[@Tanner731]

@@PhoRunner its leaking around the head/rail attachment. looks like this is going to be a bigger project than I had hoped

[@PhoRunner]

:( yah with that leak, it can’t build pressure and the switch won’t work

[@djrodriguez6582]

Why does the pressure switch need to go in the same line as the fitting??

[@PhoRunner]

That way the quick disconnect and manifold don’t explode like a mini pipe bomb.

[@djrodriguez6582]

​@@PhoRunner It looks like it could fit better elsewhere on the manifold. Does it need to go right next to the fitting for accuracy or something?

[@PhoRunner]

@djrodriguez6582 I would do a different spot yes. It’s too close to existing hole and I wouldn’t do it like that again

[@djrodriguez6582]

​@PhoRunner thanks for the insight 👍

[@IronMountainPlumbing]

@@PhoRunnerwhere would you put it?

[@LiuLiz-vo3yg]

We can send you a beast, dual cylinder air compressor, more powerful, are you interested in testing it?

[@PhoRunner]

Sure. Email me. [e-mail]

[@alanpena9399]

19 inch wrench gaaadayum 🤣

[@alexs.3888]

that fitting going to be STEAMING HOT after use. no thanks