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Thread: Door panel backing....

  1. #1
    Registered User mally002's Avatar
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    Default Door panel backing....

    Hey guys,

    I searched around and found many post regarding door panels, but nothing that really addressed the backing. I have these beautiful door skins from Les but my backing is feeling pretty weak.

    I know in the past some were thinking about doing these in fiberglass or some other type material and was wondering if anyone came up with anything.

    Also, is there a way to take the current panels and some how reinforce them or give them some added support where some pices of the hard board have broken off or are flimsy.

    Thanks for any input.

    Randy

    1970 240Z HLS30 00797 White / Blue

  2. #2
    Registered User mlc240z's Avatar
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    Why not just recreate them out of some new hardboard/Masonite?

    Use the old one as a pattern, trace it out and go to town with a jig saw and sander.

    Coat with some polyurethane to increase the moisture resistance and call it a day.
    Bart

    5/71 240z, HLS30-31306, mostly stock, ZTherapy SU's, Pertronix, Eibach ProKit, KYB, Poly bushings, 60 amp alternator w/Dave's plug bypass, headlight and parking light harness upgrades.

  3. #3
    Registered User mally002's Avatar
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    My hardwood backs have some contour to them and wasn't sure how to duplicate it, or if it is even necessary. Would the door panels fit on the door correctly if they are a solid straight piece.

    1970 240Z HLS30 00797 White / Blue

  4. #4
    '72 240Z(G) 3.2L
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    You could buy some used ones that have less than stellar panels on them and take the old skins off.

    I should have several in storage but I'm guessing someone in you area has them as well.
    if a little knowledge can make you dangerous, I'm a little dangerous

  5. #5
    Dr Chuckie
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    There may be a more elegant or comprehensive solution, but all I did was to find the weak spots/breaks in my panels and use a good stiff mixture of a two part expoxy with a light glass cloth across the back. This is not a perfect solution, as some breaks are too close to the edge, or are a tight fit against the door, meaning you can't build it up too much. But it work to stiffen up some dicey spots and give it more rigidity. I note that this solution also worked for the el cheapo plastic panels in the mid and rear of our zeds: that plastic is pretty thin and even gentle handling when you are renewing the interior can produce fractures.

    hope this helps.

  6. #6
    Registered User Oiluj's Avatar
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    That's what I did on the weak spots on mine where the sping clips tore the backing. Some penetrating epoxy and stiff vinyl made them more than strong enough where the clips mount.
    Julio
    1972 240Z (in-progress, 95% complete)
    CZC# 15388

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    Registered User ajmcforester's Avatar
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    Maybe in the future we will have other alternative, but I've only heard of using some type of resin like epoxy with fiberglass or getting an old panel. If you can find the board like material you could use steam to shape the panel I've used that to reshape panels so they fit better.

  8. #8
    Registered User ZCurves's Avatar
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    Randy,

    You can use fiberglass resin to substantially reinforce the door panel. When the resin soaks into the fiberboard and sets, it becomes VERY ridgid. When you have some areas where there are fractures or missing chunks you could use pieces of 1/8" masonite to fill gaps or use fiberglass cloth. I have mixed the resin with sawdust and filled cracks with great success. It is very 'Workable' and can be sanded.

    The resin will also waterproof the panel, which is a bonus. If you are only repairing the bottom with the resin, you can use Polyurethane finish to seal and waterproof the remainder of the panel.

    Before you re-install on the door make sure that you cover the inside of the door with some heavy mil plastic as an moisture barrier.
    Andrew (ZCurves)
    1978 Coupe - HLS30-440105
    Spring, Texas USA

    pro deo et patria
    My Albumz

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    I also have 6 door skins sitting in storage. If you were to pay shipping I would give them to you. Not sure what that would cost though.

  10. #10
    HLS30-079101 Zak's Z's Avatar
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    ZCurves, that info sounds like it could come in handy. I have an old set of door panels that have a goof vinyl but one weak backing. I'm going to put that on my to-do list for this spring.
    Zak

    HLS30-79101
    Work in progress.

  11. #11
    Registered User mally002's Avatar
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    Thanks for the tips,

    I'll try the resin this weekend and see how it turns out.

    Andrew, if I screw it up I would be very interested in the skins.

    1970 240Z HLS30 00797 White / Blue

  12. #12
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    Ok sure thing just send me a message.

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