Viair 400P Automatic Portable Air Compressor - Pros & Cons -

LinkBack Thread Tools
post #1 of 3 Old 08-27-2013, 09:58 PM Thread Starter
Registered User
2012 JK Wrangler 
Join Date: Dec 2011
Location: Slatersville
Posts: 186
Viair 400P Automatic Portable Air Compressor - Pros & Cons

I'm considering adding a portable air compressor to my Jeep. After some research, I've found the Viair 400P Automatic Portable Air Compressor which appears to be a nice unit. I like the idea of a portable vs. permanent install. Right now all I have are stock 32's and don't see that I'll ever go beyond 33's in the future. Thus, the 35" rating of the 400P seems adequate.

If you have recommendations for a different compressor, please tell me which one and why.

Also, I'd like to know your feelings about portable vs. permanent.

All opinions are most appreciated.

RalphTomaccio is offline  
Sponsored Links
post #2 of 3 Old 08-28-2013, 11:56 AM
Registered User
jeepster93's Avatar
1993 YJ Wrangler 
Join Date: Sep 2006
Location: Englewood, CO
Posts: 4,416
I would go 100% duty cycle.
Just because you never may need to fill someone else's tires and a 33% duty cycle would need to "rest". 33% is what...20 minutes of run time at no pressure load . It will take 15 minutes to fill your tires.
The nice thing about permanent mounting is it will always be there in the Jeep. The bad thing about permanent mounting is it will always be there, not here.
jeepster93 is offline  
post #3 of 3 Old 08-29-2013, 11:01 AM
Registered User
2012 JK Wrangler 
Join Date: Aug 2012
Location: OKC
Posts: 106
OP: You've got me eye balling this thing now. It's looking good to me for my uses. According to the chart it only takes 2 minutes to fill a 33" tire (which is what I have) from 15 to 30 psi. As long as you wait 30 to 40 seconds between each tire you're good, as far as duty cycle is concerned. Heck, at my age it takes me nearly that long to put the valve cap back on and get to the next tire. Effectively a 100% duty cycle in my world. I never have and never will be deflating 38" tires down to 10 psi to go rock crawling then air them back up for the road. If I was, then I'd lay out the big dollars for a more robust compressor. For a couple hundred bucks it looks good to me and Viair has a good reputation. Doesn't sound like you'll be getting very aggressive with a build or off roading. The good onboard systems get pricy.
JoeCitizen is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome