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Thread: Using P38 air tank to inflate tyres

  1. #1
    Join Date
    Feb 2010
    Location
    Townsville, QLD
    Posts
    2,456

    Using P38 air tank to inflate tyres

    Hey fellas/gals,

    I've seen a few threads on how to tap into the on-board air tank for tyre inflation (and limited emergency pneumatic tool use), and decided to give it a go myself the other day! Here's the parts you'll need in Pirtek speak:

    LPBV - 2 Way mini ball valve (female to female)
    M20 X 1/4" Metric to BSP reducing bush (I exchanged this for a 90 degree of same threads after first install due to space restrictions)
    No. 73 3/8" to 1/4" reducing nipple
    CUPLA nipple BSP - Male

    The Ball valve and nitto fitting (last on the list) are steel, the rest are brass, all use thread tape and please get yourself a new O-ring before installing!

    It works the charm now! I deflated all 4 tyres to 15psi (highway terrain) and managed to pump 2 up before the tank was getting low in pressure, so it will certainly be one of those things that either tempts me to get a larger compressor or just be more patient in the bush! Would be handy when putting the spare tyre on and realising that it's got no air!! Same if helping Beemer drivers too!

    I also put a little glad bag and big rubber band over it to keep it away from the elements! Just need to keep a few of each in the car when going bush!

    Hope this helps someone else!

    Cheers
    Keithy

  2. #2
    Join Date
    Feb 2010
    Location
    Townsville, QLD
    Posts
    2,456
    I also put a mini Glad bag over it with a large rubber band. Just need to keep some spare in the bush!

    May also help when changing to the spare and realising that it's got no damn air!!

    Keithy

  3. #3
    Join Date
    May 2008
    Location
    Canberra
    Posts
    1,834
    nice work Keithy - but we always need to see pics or it didn't happen

    I run the larger Thomas compressor on my EAS/On-board air kit and find it takes about 30secs (from memory) to inflate the last two tyres.

    Cheers, Paul.
    My toys, projects and write-ups at PaulP38a.com

  4. #4
    Join Date
    Feb 2010
    Location
    Townsville, QLD
    Posts
    2,456
    Thanks Paul,

    And whereabouts could I get my hands on one of these Thomas compressors you speak of?!

    I'll recharge the camera batteries and take a snap today!

    Cheers
    Keithy

  5. #5
    Join Date
    May 2008
    Location
    Canberra
    Posts
    1,834
    Quote Originally Posted by Keithy P38 View Post
    And whereabouts could I get my hands on one of these Thomas compressors you speak of?!
    I got mine from Rover Renovations. Was about $550 inc shipping.

    cheers
    Paul.
    My toys, projects and write-ups at PaulP38a.com

  6. #6
    Join Date
    Feb 2010
    Location
    Townsville, QLD
    Posts
    2,456
    Does it fit into the standard box housing the OEM compressor at all? If so, might save some denero's and invest in that!

    Attached - Pic of new install!

    Cheers
    Keithy
    Attached Images Attached Images

  7. #7
    Join Date
    Mar 2008
    Location
    Coogee, South of Fremantle, WA
    Posts
    1,548
    I Did the take off from the tank on my Last RR Classic. I ran a hose under the car and put the outlet female Nitto Connector inside the fuel filler flap. No need to get on your knees when connecting an inflation hose.

  8. #8
    Join Date
    May 2008
    Location
    Canberra
    Posts
    1,834
    Quote Originally Posted by Keithy P38 View Post
    Does it fit into the standard box housing the OEM compressor at all? If so, might save some denero's and invest in that!

    Attached - Pic of new install!

    Cheers
    Keithy
    pic of Thomas compressor and onboard air below. It fits in the EAS box ok but I cut a hole in the lid for the top of the compressor to poke up through.
    My toys, projects and write-ups at PaulP38a.com

  9. #9
    Join Date
    Aug 2007
    Location
    Brisbane
    Posts
    3,051
    search Range Rovers on this also. One enterprising P38 enthusiast discovered he could store the coiled air hose comfortably between the chassis and the body. due to its 'expanded' form when coiled it wedged there quite firmly...

  10. #10
    Join Date
    Feb 2010
    Location
    Townsville, QLD
    Posts
    2,456
    Yes, I noticed that one! It's smart thinking, but I wonder how it'd go after a day of corrugations! I think its a safer bet to store 5-10m of hose in a pretty little box in the back of the car!

    As for the Thomas compressor, I like the look/sound of it! Is there any more info I can get on it? I'd be interested to know just how much better it is than the standard unit! If its only marginal then I couldnt justify the cost! It does look bigger though!

    Cheers
    Keithy

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