Expansion tanks - education required
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Thread: Expansion tanks - education required

  1. #1
    Fellow Frogger!
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    Default Expansion tanks - education required

    The fuego has regurgitated all of its coolant through the scuttle panel.
    Obviously the bottle has carked it.

    Better to get an OEM style bottle or aftermarket?

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    Noticed that there is a ebay link to a tank that does an R5, Super R9, R11, Espace, Traffic.
    This unit appears to have a nipple out the front which the fug hasn't.

    Tank.jpgTank2.jpg

    First bottle failure since it was made (that I know of).

    Go replacement, and suffer the ravages of polyethylene degradation or splash for a custom?
    Last edited by 85Fuego; 11th December 2018 at 11:05 AM. Reason: images attached

  2. #2
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    Quote Originally Posted by 85Fuego View Post
    The fuego has regurgitated all of its coolant through the scuttle panel.
    Obviously the bottle has carked it.

    Better to get an OEM style bottle or aftermarket?

    Noticed that there is a ebay link to a tank that does an R5, Super R9, R11, Espace, Traffic.
    This unit appears to have a nipple out the front which the fug hasn't.

    Tank.jpgTank2.jpg

    First bottle failure since it was made (that I know of).

    Go replacement, and suffer the ravages of polyethylene degradation or splash for a custom?
    I suggest the replacement would be a good step forward. I would suggest that you wrap the new bottle with silver duct tape so that the suns rays won't degrade the new bottle.

    If you are adverse to spending that money, you could renovate and reinforce the old expansion bottle using my old trick of coating cloth with Araldite and wrapping this around the old expansion bottle (after using a hot soldering iron to remelt the white degraded plastic and expose the cracked sub surface weaknesses (watch that you don't breathe in the vapours as they may be toxic) with it securely wrapped test for any pressure loss.

    I have several expansion bottles I have repaired in that way and they continued service with no problems, but were finally removed and replaced with new expansion bottles as I came across them in my search for Fuego spares.


    Any loss of pressure in the Fuego system will cause overheating problems, so better to spend the money on a new part, even if just for peace of mind.

    Ken

  3. #3
    1000+ Posts dmccurtayne's Avatar
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    Jez broken already 30 years ainít to bad anyone seen a 5 year old Camry washer bottle looks like Swiss cheese


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  4. #4
    1000+ Posts jo proffi's Avatar
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    Get a new Renault bottle for sure, It is good to stay OE because it is high altitude.
    Just watch the size of the inlet on the the bottom, sometime you will see an identical bottle, but with a different sized inlet.

    Jo

    PS just clicked the link...case in point, large diameter hose on bottom of tank...No brainer to cobble up an adaptor.
    85Fuego likes this.

  5. #5
    Fellow Frogger!
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    Agree with Ken Fuego. Buy the new tank and wrap it in insulation silver foil to prevent sunstroke through the scuttle panel. Mine have lasted for years using this method. Re the front outlet, just put a rubber cap over it tied down with a zip tie or small hose clip. The outlet is used to return coolant to the cooling system as in my Alpine GTA V6 Turbo and probably in R25s.
    JohnW likes this.

  6. #6
    Fellow Frogger!
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    Default Success - we have parts

    Ok after travelling to Pluto and back the expansion tank has arrived.

    The next issue is that the bottom barb of the tank is 20mm and the original is 8mm.

    What are the best hose barb adaptors to use brass/plastic?

    I suspect that the outcome might be a home made brass barb combo?

    Any industrial sites not on internet people have used before that they recommend?

    Regards,

    David

  7. #7
    Fellow Frogger!
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    Default 20mm 8mm adaptor

    Ok for future reference:

    Hydraulic hose people do adaptors.

    Brass M/F $15, done.

    adaptors.jpg

  8. #8
    1000+ Posts jo proffi's Avatar
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    I'm certain that's the same adaptor my fuego ran...From Pirtec I'd guess.

    Jo

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