Suspension cylinder caps
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Thread: Suspension cylinder caps

  1. #1
    Fellow Frogger! marc61's Avatar
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    Default Suspension cylinder caps

    Came across some good plastic caps with the right thread (M36x1.5) to fit the suspension cylinders etc and stop muck getting in when working on the car with the spheres are off. They’re acrylic, come with a rubber o-ring and screw in dead easy by hand.

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    Cheap as well, just over 4 GBP for 10 off including postage from China

    https://www.ebay.co.uk/itm/LOT-10-Mu....c101006.m3226
    Cheers, Marc.

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  2. #2
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    Ordered. Good job you get 10 of them, I stand a fighting chance of finding a couple when I need them.

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  3. #3
    Fellow Frogger! Rally's Avatar
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    They look the goods for keeping dirt out of suspension cylinders , will order some for that purpose .
    Do they look good enough to use as an oil level plug on gearbox’s and diffs , would be much easier to get oil level at a glance rather then removing plug and then cleaning up the oil that escapes . But are they reliable enough to trust to keep the oil in.?
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    Fellow Frogger! marc61's Avatar
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    They’re made out of acrylic so they’ll start softening if the gearbox oil gets much above 90C. I’m guessing it probably does, especially on a long run in hot weather.
    Cheers, Marc.

    1987 CX GTi T2 Maikonics
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    1972 DS21 EFI

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    Fellow Frogger! Rally's Avatar
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    Quote Originally Posted by marc61 View Post
    They’re made out of acrylic so they’ll start softening if the gearbox oil gets much above 90C. I’m guessing it probably does, especially on a long run in hot weather.

    Thanks for for the advice , I was thinking the problem might be the acrylic would become brittle over time . Will just check the oil the old fashioned way by taking plug out.
    Peugeot 504 Rally car V6
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  6. #6
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    Quote Originally Posted by Rally View Post
    Thanks for for the advice , I was thinking the problem might be the acrylic would become brittle over time . Will just check the oil the old fashioned way by taking plug out.
    As a well known Cit Club Sage says "if it ain't broke, don't fix it". I eventually learned my lesson.
    Craig K
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    I guess the issue will be whether or not the black 'O' ring' and acrylic are resistant to LHM/ LHS.
    1968 DS21bvh Pallas in Gris Palladium

    Restoration blog: https://ds-restoration.blogspot.co.uk

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    Not sure about the black O-ring, but acrylic has very good compatibility with mineral oil.
    https://www.eplastics.com/blog/chemi...lic-plexiglass

    Polycarbonate, on the other hand has very poor compatibility with mineral oil.
    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

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    Quote Originally Posted by Rally View Post
    They look the goods for keeping dirt out of suspension cylinders , will order some for that purpose .
    Do they look good enough to use as an oil level plug on gearbox’s and diffs , would be much easier to get oil level at a glance rather then removing plug and then cleaning up the oil that escapes . But are they reliable enough to trust to keep the oil in.?
    You can get ones for carbies so you could assume if they don’t leak with fuel ?


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  10. #10
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    I’ve just submerged one in LHM, will see what happens to it in a few days time.
    Cheers, Marc.

    1987 CX GTi T2 Maikonics
    1972 SM 2.7 carb
    1972 DS21 EFI

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    Quote Originally Posted by marc61 View Post
    I’ve just submerged one in LHM, will see what happens to it in a few days time.
    Nice one.
    1968 DS21bvh Pallas in Gris Palladium

    Restoration blog: https://ds-restoration.blogspot.co.uk

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    Quote Originally Posted by marc61 View Post
    I’ve just submerged one in LHM, will see what happens to it in a few days time.
    The use for these is surely only to keep dust and dirt out of suspension cylinders with spheres removed, you could just throw the seal away - you would never pressurise the system with them fitted, would you?

    Cheers
    Chris
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    Quote Originally Posted by GreenBlood View Post
    The use for these is surely only to keep dust and dirt out of suspension cylinders with spheres removed, you could just throw the seal away - you would never pressurise the system with them fitted, would you?

    Cheers
    Chris
    You beat me to it. Use for storage/dust protection only.
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  14. #14
    Fellow Frogger! marc61's Avatar
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    Yes absolutely, I can’t see what else could be done with them.

    Quote Originally Posted by UFO View Post
    You beat me to it. Use for storage/dust protection only.
    Cheers, Marc.

    1987 CX GTi T2 Maikonics
    1972 SM 2.7 carb
    1972 DS21 EFI

  15. #15
    Fellow Frogger! Rally's Avatar
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    It would be useful if they made a female version for keeping spare spheres clean and thread protected while off the car , but have not being able to find any.
    Peugeot 504 Rally car V6
    Peugeot 504 LTI
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    Peugeot 307 Wagon
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    Rally with www.AMSAG.com.au

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    You can use a standard Caplug type SC (sleeve cap) size 1-3/8. They are flexible so you can push them over the threads and they will stay put.
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    Cheers,
    John T.

    54 TAV Legere; 61DS19 LHM BVH (son's); 71DS21 BVH; 73SM 3.0; 73SM EFI (Megasquirt); 73SM 3.0 (other son's)

  17. #17
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    The best sphere caps are the rubber boots that some spheres, factory from memory, came with. The older pressed aluminium caps were OK too and can be saved and used. The plastic caps that come with some of the aftermarket spheres like UFHS have a split line down the side and tend to fall off unless you put a tie around them.

    Perhaps, try something like these plastic caps?
    https://www.ebay.com.au/itm/332530500627
    Maybe, they need to be a fraction larger to fit the thread?

  18. #18
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    Hello, I keep my spare spheres in plastic carrier bags, cheap (shops have to charge 5p each in UK) and cheerful.

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