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  • Polyair Black

    Hi,
    I'm planning to install airbags in the year of my 150 to help level my car up when towing. Has anyone used the Polyair black bags? Any issues? Are they more supple unloaded that the red bags given they have a wider pressure range?

    Does any metal work need to be drilled out to route the air line or is the only drilling required on the bump stop after cutting off the excess rubber?

    I'm trying to weigh up whether I do it myself or get it done.

    Thanks,
    2019 GXL, Bullbar, UHF, Redarc Brake Controller, Tow Bar, Secondary Fuel Filter

  • #2
    I have fitted polyair reds to 2 prados- a 120 and a 150. No issues and no drilling. These 2 cars have covered the most remote parts of the country with no issues at all. In theory it is an easy job but in practice a bit of a bugger. You need 2 jacks, a way of keeping the whole rear of the car safely suspended. You will need to disconnect shocks, sway bar and the bracket holding the brake hoses. You may need to place a jack between the rear axle and the chassis as you do each side putting the spring in and out especially if you have longer springs. There is somewhere on here a how to thread. Quite doable if you are a bit handy but allow a good few hours. If you have access to a hoist it is a much easier job and I suspect a competent mechanic will take less than 2 hours.
    As to red v. black- no idea. The most I have ever needed is 25 psi and that was for a fully laden Simpson crossing. I use about 20 psi with the camper on the back and a fully laden car. I run them at 5psi or less when empty. BUT I do have uprated springs. Nevertheless running them at 7 or 8 psi empty does affect the ride. 5psi or less is fine.

    Comment


    • #3
      One thing you should keep in mind is rear air bags will level the ride but they don't transfer the weight. If your towing a caravan etc check your axle loads, a weight distribution system will transfer weight from the rear to the front axle and the caravan so if your rear axle load is high and your front axle load low a weight distribution setup may be better. If you plan towing while doing serious off road then a weight distribution system is probably not possible as it won't be able to handle the articulation.
      HKB Electronics, manufacturer of the Alternator Voltage Booster, Silver 2008 D4D,Lifted,Underbody protection, Alternator Voltage Booster, Tiger Z winch, Lightforce DL, Air Horns, Tanami Drawers, Drop down fridge slide, Outback cargo barriers, Rotronics dual Battery system, Polaris GPS, HF/UHF/VHF, Radio speaker combiner, Long ranger water tank, Diff breathers, Inverter, Snorkel and others

      Comment


      • #4
        Thanks for that. I did consider a WDH however I will be towing offroad so prefer to stick to bags. I'd more than likely forget to disconnect the WDH offroad and end up breaking something.

        The ball weight I need to deal with is around 200kg plus 80kg in the boot (40L Engel and 100Ah battery).
        2019 GXL, Bullbar, UHF, Redarc Brake Controller, Tow Bar, Secondary Fuel Filter

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