New tech dual mass flywheels , a look at what they are!
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Thread: New tech dual mass flywheels , a look at what they are!

  1. #1
    1000+ Posts
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    Default New tech dual mass flywheels , a look at what they are!

    Hi
    I looked this up for someone who had been diagnosed with a failure of his flywheel. Feels expensive too
    As I know little about these "new fangled gadgets" I though it might be of interest to other old fogies on here also ! Plenty more where that came from but I thought this one was clear and concise
    http://www.understeer.com/pdf/dualmass.pdf
    jaahn

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  2. #2
    1000+ Posts FIVEDOOR's Avatar
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    Thanks
    Any day I wake up and don't have to go to work, is a good day
    Every day is a good day

  3. #3
    Tadpole
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    Look up a new kit for sale on micks garage.com
    Include a new flywheel and buy a normal clutch instead

    Sent from my GT-I9505 using aussiefrogs mobile app
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  4. #4
    Tadpole
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    Hi. I would like to chip in here that I had a mate with a petrol BT50 ute with a crook clutch. I replaced the DMF for him with a regular clutch conversion kit. Honestly, I couldn't tell the difference from before when the DMF was working. And the kit cost about half the price of the new DMF kit. I reckon they are a bit of hoax, and an expensive one. That's just my one time experience, so maybe not much to bet the bank on.

    Cheers, John.
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  5. #5
    Too many posts! JohnW's Avatar
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    Thanks for that. Interesting - I had no idea they were made that way! Judging by the troubleshooting comments, they are a bit vulnerable to bad/rough driving. I've come across the odd failure at low km from people known to people I know....

    See also Dual Mass to Single Mass flywheel conversion for a warning about assuming that because one conversion to a single mass was OK the next one will also be OK!

    I presume it is basically about smoothing out something a bit rough in rotational accelerations, a bit like WO Bentley discovered when he needed rubber engine mounts for his first, 3-litre car.
    JohnW

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  6. #6
    Tadpole s9810588's Avatar
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    I had unpleasant and expensive experience changing from DMF to SMF.

    In my case, VW/Audi 2.0L turbo engine does not have harmonic balancer and uses DMF to balance torsional harmonics. The SMF combo lasted 12,000km before it started making horrible metal screeching noise. Back to DMF and I have no problem since. The mechanic had first hand experience of spun big end bearing on the Golf R32 V6 engine that has gone to SMF.

    What an expensive experience having to buy two clutch & flywheel kits twice in two years and the labour to change clutch. The SMF clutch kit wasn't a cheapo either - it was ZF Sachs one.

  7. #7
    Fellow Frogger!
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    Swapped from DMF to single on my 2.5l diesel Pathfinder years ago. Initially it felt a bit rougher but we soon got used to that and now more than 150,000 hard kilometers later I'm still grinning (DMF only lasted 95,000).
    jaahn and dvr like this.

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