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  1. #1
    Newbie Essoman's Avatar
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    Default HQ fuel tank rust seal

    Just removed the petrol tank from a HQ, the go gas inside is a pretty shade of rusty red so will be cleaning it out.
    Plan to pressure test it then, and if ok will seal/ coat inside and hopefully it will be good for the next 50yrs.
    Any one out there swear on one product more than another (POR, or Red Coat for example). Any useful things to know, watch out for? I really want to get this right first time, and that's why its better to hear others joys or misery's first.
    If all fails I could get a new repo... but doesn't appeal much, nor did the 2.5 K price for a modified one from Bendigo.

  2. #2
    Part of the furniture
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    HI
    Is that the guy who increases the depth with other mods ,sounds like it.
    If that's the case his tanks were only internally sealed by using sealant . For longevity and cost I would expect the tank to be recoated in zinc etc .

    There always is the tanks made outa alluminium .



    Galvanizing a Fuel Tank
    https://www.camaros.net/forums/33-ca...rne-steel.html

    In summary terne treated fuel tanks are almost impossible to obtain due to the multi layer process due to cost and living in Australia .
    Hot Dip Galvinising is a poor substitute ..

    BEAWARE THIS IS THE REASON WHY BRAKE LINES SHOULD BE REPLACED WITH
    copper-nickle or stainless

    The garbage zinc plated brake tube that's available now does not last . The dip time is short and in china I suspect.
    Last edited by swampy; 07-03-2019 at 02:45 AM.

  3. #3
    casual poster
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    Default

    Only last week I gave my brother in law a hand to reseal the tank in his clubsport using the kbs kit,pretty simple process,once the sealer hardens it is like concrete,my father in-law has also used this kit on a FJ Holden not that long ago,both were happy with the results

  4. #4
    casual poster Willie's Avatar
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    Default

    Plus one on the KBS kit.

  5. #5
    Newbie Essoman's Avatar
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    Smile

    Thanks 'swampy', yep that's the guy from the Street Machine HQ project a while back. Your link followed up with much appreciation.
    Koeh & Willie- I've looked at that and while good, I was worried about dents in the tank causing cracks in the hard sealant, debris blocking outlet, etc, etc.
    To explain that a bit more; I live down the end of gravel roads (poorly maintained) and the odd 'pebble' occasionally plays havoc. We've seen Minis disappear in some of the potholes. Love our cars, but none of them are trailer princesses.
    Please keep any useful info/ suggestions

  6. #6
    Newbie Essoman's Avatar
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    Default

    Sorry, last post should have ended with...... please keep all those suggestions- coming.

  7. #7
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    Default

    Honestly,the excess paint that you pour out of the tank when coating it we poured onto a drum,you could stab it with a screw driver and wouldn’t leave a mark,so rocks hitting the fuel tank wouldn’t be a problem I would think,but if you car is bottoming out in potholes that will be an issue regardless of what you do,put a 1/2 “ thick bash plate around it or drive to conditions

  8. #8
    Part of the furniture
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    Hi
    Coat the external underside of tank with 3M Stonegard .Its paintable . Protects from small impacts . I use this under carpet and inside wheel arches.

  9. #9
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    Default

    Thanks to all.
    Tank has come out squeaky clean after wash- out, and proved airtight.
    Will take all input on board. Much appreciated.

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