Viair 300p vs 400p - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 7 Old 12-26-2011, 08:30 AM Thread Starter
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Viair 300p vs 400p

Got the Viair 300P portable air compressor for Christmas, yeah me. It's a perfect gift because I don't have any immediate plans to go with an on-board air system. When my Dad gave it to me he said, "I think I got the wrong size, it says on the box 33" tires and you have 35's". I told him no biggie, it's perfect.

Well, Dad gave me the receipt so I could go to 4 wheel parts and swap it for the 400P if I wanted.

My question to anyone with experience...should I swap for the 400P? The specs on the Viair website don't show much of a difference at all between the two. Same duty cycle for each, a very slightly higher CFM for the 400 and a longer coil(25' vs. 35').

I'm thinking the 300P is just fine, thoughts?

TC
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post #2 of 7 Old 12-26-2011, 12:02 PM
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its going to take a few min either way so are you in that much of a rush?

unless you are running twin compressors or an engine driven unit there is a difference but not like OMFG!
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post #3 of 7 Old 12-26-2011, 12:44 PM
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ya yous should be good with 35's
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post #4 of 7 Old 12-27-2011, 12:26 AM
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I would suggest at least the 440P to make quick work of those 35's.

I was using the 440p for a couple months. 10 to 35 PSI took just about 4 minutes a tire. The C02 setup gets me from 10 to 35 psi in 1:20 flat. However, there are drawbacks to C02 that I am learning to overcome as I go.
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post #5 of 7 Old 12-27-2011, 05:38 AM
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If you have the money, upgrade to the 450P.

You will appreciate the extra performance and 100% duty cycle. Though not a HUGE annoyance, one thing I am tired of doing is waiting for my Viair to pump up my tires at the end of a run.

35's take about 20 minutes (never timed it) total to pump up from 8 PSI. And get another pressure guage. Mine is off by a couple of PSI.
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post #6 of 7 Old 12-27-2011, 09:57 AM
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400p is better, I used one to air up 40s several times.

buttttttt.....for around the same price you can get a CO2 system and will never use a compressor again.
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post #7 of 7 Old 12-27-2011, 02:53 PM
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York belt driven.

35" MTRs 8 PSI - 28 PSI in 1:30.

2008 JK X 2DR NSG370

Time to build the TONS!

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