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air compressor advice

Discussion in '3rd Gen. Tacomas (2016-2023)' started by tall_paul, Nov 2, 2016.

  1. Nov 2, 2016 at 10:26 PM
    #21
    0210

    0210 Well-Known Member

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    All the specs I've mentioned have been at 0 PSI. It seems the "degradation" at higher PSI is roughly proportional (unit A is 30% higher than unit B at 0 PSI, and is still ~30% higher at X PSI).

    For permanently mounted, ARB's CKMA12 for $275USD shipped on Amazon seems like a value winner to me, but that's assuming the specs they list on their site are accurate (their Amazon listings all show different - lower - specs for the same units).

    For portable, I'd go w/ the Viair 400P. Will almost certainly pick this one up soon.
     
  2. Nov 2, 2016 at 10:26 PM
    #22
    Z50king

    Z50king DCLBOR4X4FTW

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    I would never mount an air compressor in the engine bay. The air in the engine bay is heated and the compressor will intake hot air. This will heat the compressor and give you inaccurate pressure readings when filling. Bad idea
     
  3. Nov 2, 2016 at 10:35 PM
    #23
    paranoid56

    paranoid56 Well-Known Member

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    lol, it wont matter, the air coming out of any of these is already hotter then the ambient air temp inside the engine bay. dont believe me? go grab the hose coming out of the head of the air compressor.

    the only bad thing could be a shorter life of the air comp due to the hotter temps for its whole life. however, i can say i have had arb pumps mounted under the hood for 10+ years with never an issue on any of them.
     
    forty2 likes this.
  4. Nov 2, 2016 at 10:37 PM
    #24
    0210

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    I saw someone mount a portable compressor in the larger (driver's side) bed cubby. That's what I would do, too. From there you'd pull out the hose to the tires.
     
  5. Nov 2, 2016 at 10:44 PM
    #25
    Z50king

    Z50king DCLBOR4X4FTW

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    I was thinking of mounting under the bed if I ever mount something. I just have an 88p that I keep behind the rear seat. Plugging it onto the battery and taking it in and out isn't that bad. I only air down once a month, tops, usually
    please read and revise your comment
    https://en.wikipedia.org/wiki/Newton's_law_of_cooling
     
  6. Nov 2, 2016 at 10:55 PM
    #26
    RyanL

    RyanL Well-Known Member

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    +1 to the comments above: if you're not adding lockers, keep it portable.

    I love my Viair and for sure won't mount it. I've pulled it out to help other people's rigs, bikes, etc. Then it stows right back under the rear seat.
     
  7. Nov 2, 2016 at 11:22 PM
    #27
    ahkouchi

    ahkouchi Well-Known Member

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    I have the 300p. Love it. I got it from the Amazon warehouse deals for $111 with free shipping. Always check amazon warehouse for shit. I got my 5160's for $100 each too. pretty amazing stuff. all stuff from warehouse is free shipping.
     
  8. Nov 3, 2016 at 12:56 AM
    #28
    jameshartman69

    jameshartman69 Well-Known Member

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    As soon as I get all the parts together I am putting a 2nd Optima, VIAIR and dual charging setup in my cross bed tool box with mounted switches and air outlets in the box.
     
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  9. Nov 3, 2016 at 3:10 AM
    #29
    vinkon235

    vinkon235 Well-Known Member

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    opt7 cree series fog lights busman aux relay box viair 450c oba opt7 fluxbeam led headlights
    Viair 450c 20160804_101659.jpg
     
    tall_paul[OP] likes this.
  10. Nov 3, 2016 at 3:17 AM
    #30
    jake72

    jake72 Well-Known Member

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    Viair 450p works great
     
  11. Nov 3, 2016 at 5:51 AM
    #31
    Woodrow F Call

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    Eh, just open the hood when in use.
     
  12. Nov 3, 2016 at 8:11 AM
    #32
    Z50king

    Z50king DCLBOR4X4FTW

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    that's not going to help
     
  13. Nov 3, 2016 at 8:22 AM
    #33
    paranoid56

    paranoid56 Well-Known Member

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    no need to revise, you obviously have never actually used any of these. you seem like a arm chair wheeler. which is fine. but having used these, after 1min or so, the head of my air compressor is already over 140deg F. weather its outside or under the hood. your discharge air temp isnt going to be noticeably hotter. now if you want to add aftercooler go for it.

    Also putting it under the truck is even a worse idea unless its protected from all elements (say in a box) but then thats even worse then under the hood.

    i feel you should just keep a nitrogen tank with you so you dont have all these issues you seem to have with air expansion due to heat lol
     
  14. Nov 3, 2016 at 8:56 AM
    #34
    SLOBRA

    SLOBRA LET IT EAT®

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    I've had the VIAIR 450p for about a year now and love it, all parts are surprisingly high quality. The quick connect hose is ridiculously long and flexible so I haven't needed to move the unit while in use, even reaches my trailer tires. Auto shutoff once it's primed, it's surprisingly quiet and the gauge is accurate. While not as fast as the 400p (1.8cfm vs 2.3cfm @ 0psi) its duty cycle is what sold me, 100% vs 33% @ 100psi so there are no worries about on/off cycles. I tow an offroad trailer and getting six 33" tires from 15psi to 35psi takes about 25 minutes of continuous running.
     
  15. Nov 3, 2016 at 10:25 AM
    #35
    TacoRD16

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    Wrong law.. you want to use the combined gas law which combines Charles's Law, Boyle's Law and Gay-Luccas's Law.

    upload_2016-11-3_10-23-29.jpg
    Newtons law doesn't take into consideration a constant volume which drives pressure based off of temperature change. Yes pressure is proportional to temperature but its not as significant difference under pressure. You are literally talking about a 3 psi which can been seen on cold days to driving temp. So basically put 1.5 psi more air if you are pumping from under the hood if you are going from 15 psi to 30 psi to set cold tire pressure.

    I don't know about you but I can barely read most of the gauges with in 1 psi.
     
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  16. Nov 3, 2016 at 11:19 AM
    #36
    Woodrow F Call

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    Why wouldn't it?
     
  17. Nov 3, 2016 at 11:24 AM
    #37
    bmgreene

    bmgreene Well-Known Member

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  18. Nov 3, 2016 at 12:05 PM
    #38
    tall_paul

    tall_paul [OP] Well-Known Member

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    This was well thought out. thank you for the input.

    This is a good idea. I like it. Does this fit under the rear seat? Considerably smaller than the 400p.

    Nice setup. What would you say your total cost/install time was? Happen to take any pictures documenting your install?
     
  19. Nov 3, 2016 at 1:56 PM
    #39
    ahkouchi

    ahkouchi Well-Known Member

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    It might? Never tried TBH. Whenever I go OR I pack a container that has a tool bag with various tools I may need and I just throw the 300p in that container since it came in a handy little bag :). Also, just an FYI, the hose on the 300p also allows you to deflate your tires... I already had a ARB deflater though....
     
  20. Nov 3, 2016 at 4:00 PM
    #40
    CusterFan

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