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Stop/start and turbos

  • 24-07-2012 11:10am
    #1
    Stallingrad
    Registered Users, Registered Users 2 Posts: 4,189 ✭✭✭


    I've always been a believer in letting a turbo engine idle for a while before switching off the engine, but now have stop/start on the new car which can be great in traffic, but I keep an eye on it and override it when I feel that switching the engine off would do more harm than good.

    I have no faith in manufacturers making anything to last longer than 3/5 years anymore so wonder long term will we see a lot more failing turbos, never mind knackered starter motors, as a result of this technology?


Comments

  • #2
    cadaliac
    Registered Users, Registered Users 2 Posts: 2,903 ✭✭✭cadaliac


    Turbos are cooled independently as far as I know.


  • #3
    Thatnastyboy
    Registered Users Posts: 1,254 ✭✭✭Thatnastyboy


    Its not all about cooling,

    The oil pressure drops when the engine is switched off, the turbo may still be spinning at 50,000+ rpm, and getting no proper lubrication,

    Agree with the op, I always give a minute or two of idling before knocking off a turbo'd engine

    Same when starting up, I just give it a chance to get some lube going while i roll a smoke :D


  • #4
    Leonard Hofstadter
    Registered Users, Registered Users 2 Posts: 5,541 ✭✭✭Leonard Hofstadter


    I think on some of them the car will not shut down if the turbo is too hot, but I agree with your concern - it certainly is good practice to leave the engine run for at least 30 seconds after a hard drive in order to prolong the life of a turbo.


  • #5
    Jimbob 83
    Registered Users, Registered Users 2 Posts: 2,032 ✭✭✭Jimbob 83


    No turbo timer = no need imo, unless you have been silly enough to rag it for the last 15 minutes home and then just switch it off


  • #6
    Joe 90
    Registered Users, Registered Users 2 Posts: 906 ✭✭✭Joe 90


    Reminds me of when the Guarda special branch got some R18 turbos back in the 80s. Story was that they wrecked quite a few turbos, probably due to not letting them idle for a minute before shutting down after a hard run.


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