Should a DMFlywheel be replaced as a matter of course, when changing clutch?? - MINI Cooper Forum

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post #1 of 5 (permalink) Old May 19th, 2014, 03:33 PM Thread Starter
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Question Should a DMFlywheel be replaced as a matter of course, when changing clutch??

I'm having an expensive day today.....

My 2008 JCW oil feed pipe to the turbo is leaking oil, and I have recently started to smell burning oil in the cabin. (maybe that's why I've been topping up quite a lot too?)

So off I trot to the dealer, and discover that the pipe isn't expensive, but the job is labour intensive to strip it all down to replace it.
Ł600+ to fix it (and replace the other oil feed\cooler pipes around it for good measure)

Now, I've been putting off having my clutch replaced for a while, as it has been shuddering slightly on take off. No clutch slip, but the pedal has been quite stiff too. It's done 68,000 miles. (4,000 of which are mine)
So I was asked if I wanted to get this done at the same time, to save the added expense of having to take off the front end for a second time to get to it, as this needs coming off to replace the oil pipes anyway.

My question is, if the DMFlywheel looks to be ok (after the techie has had a look at it), should I be happy at just getting the clutch done alone?
I was told by the tech, that if the DMF isn't damaged, then there's no point in spending the Ł600 or so replacing it, as it should be fine.
I just thought that due to the high cost of labour to get to the DMF, is it false economy not to replace it as a matter of course, or are they reliable if the clutch hasn't affected it?

I managed to get a deal on the job lot by the way, which is why I'm getting the clutch done at least.
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post #2 of 5 (permalink) Old May 19th, 2014, 06:40 PM
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I would go ahead a switch to the solid mass flywheel while your in there a dual mass can not be resurfaced and cost more than a solid mass =)
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post #3 of 5 (permalink) Old Sep 24th, 2014, 12:59 AM
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find an honest good independent shop, much less than the Stealer for sure. only use stealers for warranty work. whenever you are torn apart servicing soon due parts is smart. when i had an LSD installed in my last car the upgraded clutch with steel single mass flywheel only added an hour labor since most everything was already apart
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post #4 of 5 (permalink) Old Sep 24th, 2014, 03:55 PM
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I would recommend changing the DM Flywheel as well while they are changing the clutch. I didn't think the cost of the flywheel part was so large on top of the clutch?

I wouldn't consider swapping from a dual mass flywheel to a single mass flywheel as the transmission may well be a lot harsher, and I assume the single mass flywheel will not be a BMW approved part.....best to stick with what was in the original specification unless you have a highly tuned engine and use the car for track days/racing.

However, I haven't had a lot of joy with DM Flywheels in other cars (not Minis) they seem to break up pretty suddenly even if thy look good on inspection. And I have gone down the route of fitting a SM flywheel when available but only for it to fail just as quickly and certainly caused a lot more vibaration in the transmission.

As I say, in my opinion best to stick with BMW parts and get the flywheel changed at the same time as the clutch.

Spike
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post #5 of 5 (permalink) Old Sep 25th, 2014, 12:57 PM
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Garage
The Valeo single mass conversion kit (flywheel and clutch disc and pressure plate plus hardware)
is just a little more than half as expensive as the DM Flywheel alone. Most people who have made
the switch are very happy with it, including myself (although mine is in an R50 - did a 6-speed conversion
after the Midlands crapped out). It's a couple pounds lighter, and said to be as durable as oem,
which you can't say about most aftermarket flywheel/clutch combos, especially the lighter and more
high performance oriented ones.

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