I have the same setup, but would love to not have to open the hood. What did you use to move it to the bumper?This is the kit I run. (linked below) But, I modified it so I can plug my air hose in next to the bumper instead of having to open the hood. It fills up a 35" tire from 10psi to 25psi in roughly 2 min each.
I have no experience with the viair system so I can't speak for it.
I bought a small air hose from the hardware store, a right elbow attachment (for the mount), a new chuck, and made a mount by cutting then bending a piece of scrap metal.I have the same setup, but would love to not have to open the hood. What did you use to move it to the bumper?
That’s super cool!I bought a small air hose from the hardware store, a right elbow attachment (for the mount), a new chuck, and made a mount by cutting then bending a piece of scrap metal.
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I own a 400P portable kit, now a backup and used in other vehicles after I installed a Viair 400H hardmount compressor in my jeep.
1. The 400 series is a very good value when on sale on Amazon. I purchased mine for about $160. Subscribe to an alert on this website and you will be notified when the item reaches your target price:
2. The Viair 400 series compressors have a 20% greater output than the 450 series compressors, i.e. they are faster. The 400H puts out 2.30 cfm @ 0 psi and 1.75 cfm @ 40 psi whereas the 450 puts out only 1.80 cfm @ 0 psi and 1.39 cfm @ 40 psi. A 400 series compressor has a 33% duty cycle which means that it is rated by Viair to run for 20 minutes at 100 psi at 72*F ambient temperature before being allowed to cool for 40 minutes. This means that a compressor pushing against only 30-35 psi can run longer than 20 minutes although how much longer is not measured by Viair. Since jeepers seldom inflate a tire to more than 30-35 psi and the 400 series compressor can fill a 35" tire from 15 to 30 psi in 2:40 (+/- 5 sec.) and from 0-30 in 5:05 (+/- 15 sec.) this means that one can fill a set of four completely flat 35" tires before the duty cycle becomes a concern or two sets of aired down 35's. In the 6-7 years I've owned a Viair 400 series compressor I have aired up my own 35's and frequently someone else's 33 or 35" tires in the same session and I have never experienced any issues relating to duty cycle or overheating.
Given the choice between the 400 and 450 series compressors I picked the 400 for its 20% greater cfm rating and after using two of them over 6-7 years I still recommend the 400 over the 450.
Yeah exactly. At a certain point I’m not willing to pay $300 to save me 4min on filling tires. I’m pretty happy with the 2 minute/tire 15-30 psi rating of the viair.This is exactly why I went with the 400p Automatic.
I've had it for a year or so and despite topping off my wife's 35's and my 33's, we've never reached its duty cycle limit.
Now, my buddy has the dual piston ARB unit- that thing is a monster and performance wise blows the 400p out of the water, but at more than double the cost, it's definitely not double the value (IMO).
I can’t speak from experience but I read somewhere Jerry saying the smittybuilt CFM ratings are inflatedI have a Slime dual piston pump. Looks like it's only capable of 1.9 cfm. It pumps my 31s up in 2 or 3 minutes. Maybe I'll time it the next time. Cost me about $60.
I see that Smittybuilt has one that is 5.65 cfm. Looks like they're about $135.
Prior to installing the Viair 400H I was using the Smittybilt 2781 portable compressor. They may inflate their ratings but that compressor is mighty fast, considerably faster than the 400H. I switched to the installed system just because of convenience.I can’t speak from experience but I read somewhere Jerry saying the smittybuilt CFM ratings are inflated
Awesome sounds like it’s a great option for a low cost portable compressor then. How much faster was it?Prior to installing the Viair 400H I was using the Smittybilt 2781 portable compressor. They may inflate their ratings but that compressor is mighty fast, considerably faster than the 400H. I switched to the installed system just because of convenience.