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VIAIR 440P or 450P???

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440p 450p or viair
5K views 9 replies 5 participants last post by  axeman628 
#1 ·
Due to the load range "E" tires on my truck and the PSI requirements(65 PSI front, 80 PSI rear), I think I am going to need to go with a high end compressor. I think I have it narrowed down to the VIAIR 440P(highest flow at 3 CFM) or the 450P(lower flow at 1.6 CFM, but rated for constant duty). Any experience with either of these? Large part of me would prefer to be done as quick as possible, but would I sacrifice longevity of the unit? At $300, I would prefer the thing to last me forever. Am I better taking an extra few minutes to fill up and having a unit that will be with me much longer?
 
#5 ·
I was thinking about that option too, but there are a few added concerns that go with it. Onboard systems cost more, everything mounted to the frame rail will be exposed to the elements(including salt from winter driving), and how much benefit will I really get from 2.5 gallon tank? 1 tire? then I am running right off the compressor again.
 
#6 ·
Back in the day I had a '79 ford 250 4x4. All heavy duty gear. 460 cu in Ran it at the garden and coliseum in those mud runs. Fun times.

Any way it had 44" monster mudders onnit and I had the steel wheels widened to 14". Took a large volume of air to seat those beads.

What I did was put a Lincoln a-c compressor onnit and drilled / plugged the oil line with lead then ran copper tubing to a tank mounted to the frame rail. I think 20 gal or so. The ones you get at autobarn. Put a switch and gage in the cab and two relief valves in the plumbing to be safe and that worked for over ten years when I sold the old heap. 80 psi would be no problem.
 
#10 ·
Just get a system like this and call it a day. There are a bunch out there that are similar and probably less expensive deals around. Grab some Staun deflators while you're at it and you'll have a lot less headaches.

http://www.demello-o...&products_id=76
Seems to be the best bang for the buck. I was looking to make my own. All in would be about $200, and that's with a 20lb tank. Pretty extensive writeup here:

http://www.jeepforum.com/forum/f27/build-your-own-co2-tank-system-high-quality-lowest-cost-1208163/
 
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