Megane 225 Cup - Running in / Turbo
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  1. #1
    Fellow Frogger! DrRenaultsport's Avatar
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    Default Megane 225 Cup - Running in / Turbo

    Well i got my car yesterday, and i was thinking about running in.

    Having never owned a Turbo car, whats the best thing to do. the book says dont go crazy for the first 1000 kms .... then go for it ?

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    Also with a turbo car, should i warm it up in the morning ? do i leave it cool down before i turn it off ?

    With the Clio it just would not play when it was cold ?

    So any advice, tips are most welcome.

    Thanks

    Dom

  2. #2
    Fellow Frogger! casnell's Avatar
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    Quote Originally Posted by DrRenaultsport
    Well i got my car yesterday, and i was thinking about running in.

    Having never owned a Turbo car, whats the best thing to do. the book says dont go crazy for the first 1000 kms .... then go for it ?

    Also with a turbo car, should i warm it up in the morning ? do i leave it cool down before i turn it off ?

    With the Clio it just would not play when it was cold ?

    So any advice, tips are most welcome.

    Thanks

    Dom
    Don't quote me on this, but having raced turbos for 10 years the only thing I'd say is warm it up. We've rallied lots of brand new turbos, there's no wy I'm going to spend ages "running in" a turbo, and we often finish a stage with the whole thing red hot and let it cool down for not long. I think those turbo timers etc are a waste of time, if we don't damage them with the way we treat them , no road driving will be as bad as that! (And we run lots more boost etc)
    Having said that, they do like to be warmed up. Have fun with it!
    Chris
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  3. #3
    1000+ Posts HONG KONG PUGGY's Avatar
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    Running in?? There are many theories on this particular topic.
    http://www.mototuneusa.com/ search for running in
    This guy has been qquoted here before, and most wil agree with what he says, some won't which is expectable. You have to draw your own conclusions.
    I can tell you to definatly warm up the car before giving it curry in the morning and when you go to turn it off also let it run down for about 30 secs.
    In my old Saab 900t I used to start the car before I put on my seatbelt and sunnies to give it time to warm a little and when I was going to stop, I'd take off the belt, gather all the things I was taking then turn it off(saves you sitting and counting to 30)Alternativly you could fit a turbo timer, but I am not sure how this would go with a warrantied car being an aftermarket fitting(unless Renault have one too). If you are electronically minded you could build a Jaycar intelligent timer which moniters the way you have driven and cools down relative to this(hard run, longer time)
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  4. #4
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    I am not sure that turbo timers are entirely legal anymore.

  5. #5
    Moderator vivid's Avatar
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    My mate and his 280ZT put a turbo timer on his car.

    Now the Z cars of that vintage have a known problem, of springing leaks in the fuel line, around the intake manifold.

    The combo of them both.. one day leaves it parked turbo timer on.. rushes off to the shops... comes back to his Z being extinguished by the fire'ys after a crowbar to the bonnet.

    Dunno if its relevant, but I guess other things, like it jumping into gear could pose a problem.

    He was able to claim insurance on it and buy himself a normally aspirated 260Z, which he loves even more, despite the lack of twin turbos. Much nicer looking car imo, but I have a soft spot for 240/260z's

    Thought it worth a mention

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    1000+ Posts HONG KONG PUGGY's Avatar
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    Quote Originally Posted by mantra
    I am not sure that turbo timers are entirely legal anymore.
    The latest I have read on this is that if you fit a timer you MUST have a correctly functioning hand-brake.
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  7. #7
    wielder of the sword Australdi's Avatar
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    Renault advised us that a turbo timer wasn't neccesary, nor was running the car afterwards...it's been designed to be switched straight off....but it should be in the manual hehehe
    do any guys ever read those cute books?

    Aus
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    Fellow Frogger! casnell's Avatar
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    Quote Originally Posted by Australdi
    Renault advised us that a turbo timer wasn't neccesary, nor was running the car afterwards...it's been designed to be switched straight off....but it should be in the manual hehehe
    do any guys ever read those cute books?

    Aus
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    1000+ Posts HONG KONG PUGGY's Avatar
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    Quote Originally Posted by Australdi
    Renault advised us that a turbo timer wasn't neccesary, nor was running the car afterwards...it's been designed to be switched straight off....but it should be in the manual hehehe
    That's very interesting, turbo's get rather warm at any time and if you've been givin it stick it'd be real hot...not un-known for road cars to have blowers 'glow' with heat I'd be running it for a little while no matter what. Small price to pay.....HKP


    do any guys ever read those cute books?

    Aus
    The key word is highlighted, girls yes but we men don't need to read a manual......may-be that's why relationships are so hard, no-one ever gave us a book..not that we'd read it.
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  10. #10
    1000+ Posts Europa's Avatar
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    Australdi has a great point, how often do we get questions on here that are simple manual type questions (like rain sensitivity setting on auto-wipers etc.)

    Remember folks, the index is your friend. The answer will be with you faster than you can type the question on to Aussiefrogs!
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    Moderator vivid's Avatar
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    But you cant do a text search on a printed car manual.

    So 1900's!

    David.
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  12. #12
    Fellow Frogger! DrRenaultsport's Avatar
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    Quote Originally Posted by Australdi
    Renault advised us that a turbo timer wasn't neccesary, nor was running the car afterwards...it's been designed to be switched straight off....but it should be in the manual hehehe
    do any guys ever read those cute books?

    Aus
    Hey i read the book from cover to cover .... nothing at all about the Turbo version...... thats why i asked.

    Must be one of the few that read all the crap that comes with the car ...

    The way i look at it is, never know what you might learn.


  13. #13
    wielder of the sword Australdi's Avatar
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    Icon12 you are one in a million!!!


    IIRC...renault told us that there was no need to run the car on....however to be on the safe side, if I was you...If I had been driving the car hard (as if!!! ) I would take it easy for the last few kms before home
    but then again...knowing me...maybe I wouldn't!

    honestly tho...they did say it wasn't neccesary to run the turbo down !
    & we didn't after the training day
    Aus

    (of course we diddn't hammer them )
    Aus
    ".....the good health of a pond is held in a delicate balance. A pond's condition
    deteriorates when the bottom environment cannot support animal life.
    The bottom is the area that runs out of oxygen first, it is where the most oxygen is used........"



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  14. #14
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    AFAIK the main reason to leave the engine running in a turbo is to prevent running the turbo bearings dry or baking the bearings when you turn the engine off...

    This is only a big problem with the older oil cooled floating bearing turbos when you pulled up after a stint of hard driving and then switched it off...

    The turbo (which was very hot and potentially still spinning at high RPM) had both it's cooling and lubricant (the actual bearing component) supply instantly cut....not good

    The newer cars with water cooled turbo's and needle roller turbo's don't are not as affected by the above issues...

    I'd still leave it to idle for 10 seconds (to allow the turbo to spool down) to be safe...

  15. #15
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    The RSM 225 is a low pressure turbo, so it isn't like a Nissan Pulsat ET Turbo with a hand grenade motor/turbo.

    So under "normal" circumstances there would be no need to let the car wind down. However, as has been suggested, if the car has been run long and hard, it would be an idea to let the car idle for say a minute or so to stabilise the motor temperature and prevent hotspots inside the motor when the engine stops and the coolant and oil is no longer being pushed around by the pump.

    This is even an idea with older tech non turbo motors that have been used hard and fast, which due to the older technology are likely to benefit from the coolant temp being stabilised by letting it idle.

  16. #16
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    The idea of a cruise home is always a good one, besides, you don't live on a high speed road do you? If its a 50 or 60 zone, then stick to it and let the engine suck up the air without being hammered. I try to do that in the 5GTT, plus I let it run for a bit before turning off. It does, however, have an old style water cooled turbo and does prefer cool down like that. I usually turn it off once the radiator fan turns off the first time.
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    As a rule, I let my Megane Cup idle for a minute or 2 before shutdown. In fact after shutdown, you can hear what sounds like a tiny electric motor running. You need to almost have your ear against the bonnet to hear it. I assume that it is some form of post shutdown water circulation pump. To assist turbo cool down presumably. It is definately not a fan because the sound is extremely faint.

    Anyone else have any theories on this?

  18. #18
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    Some Audis come with small fans that blow across the injectors to take the heat out of them (from sinkage) which stops deposits forming on the pintles. I wonder...?

    Stu


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