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DMF lifespan vs vRS characteristics

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I thought dual-mass flywheels were only fitted to diesel cars??? :confused:

Nope. The VAG 1.8T have them as well.

In fact a wide range of brands have them.

Nope. The VAG 1.8T have them as well.

In fact a wide range of brands have them.

Oh.

I was over simplifying my description really, but thats the easiest way to describe how a DFM works, the VAG DMF doesn't work like that, it effectively has 2 flywheels separated by a rubber cushion that is the 'spring' which is what melts and makes the mess when things go wrong!

I've only ever seen it melted , terrible stuff

got a brand new one in my shed , should i do a cut away of it and take pictures :rolleyes:

Have to say my DMF is performing nicely. Didn't murmur at all when doing 2nd gear launches at GTI Inters :cool: I can only assume my DMF is being preserved by it's machining down to mate with my kevlar clutch. It's taking all the abuse I can throw at it.

bad move Jas, it's gonna blow up now. you've cursed it!

I think your all worrying to much to be honest, I've never replaced a flywheel on any of our Skoda's / VW's or Audi's on the cab fleet, and they all get driven hard.

I'd tend to agree. I've driven lots of VAG TDIs, and I tend to use low revs rather more than opinions here state as wise. I don't labour the engine, but I'm not afraid of using the whole torque range- that's what it's there for.

I really think that if the standard map could knacker the DMF at any combination of revs and torque load, they'd upspec the DMF or simply tune it out of the mapping. Lets face it, the ECU knows how fast the engine is turning, how fast the car is moving, and if the clutch is engaged. It would be easy to stop the engine developing full torque at 1700 rpm in sixth. Some Audis with the CVT transmission have lower peak torque output to protect the CVT.

I'd imagine a good way to toast it would be dropping the clutch from standstill, bouncing off the stops. Comments?

  • 1 year later...

Well I never!

Just reading this/these threads as I've recently purchased a 2008 Fabia II 1.4TDI PD80. I love it!

Anyway... it was about the DMF. I never knew that simply changing up at peak torque would cause damage. It is not mentioned in the owner's manual (as one contributor says). I have owned many cars over the years and yes, mechanical sympathy is always to be considered but simply using a car everyday and driving "normally" should not cause any problems. One quickly adapts driving style to diesel-fueled cars and I think we all agree that changing-up late is not the best way to hustle a diesel car along. Changing-up too early means waiting for the turbo lag which I must say is not so evident these days either, so compromise is probably the order of the day? I suppose with a high mileage or older Skoda there might be problems but can I assume that driven normally, my car (and it's Dual Mass Flywheel) will outlast it's new car warranty period?

I had a Suzuki SX4 1.6 TDI before but rejected that due to many problems (including a fuel leak the dealer could not find). My Skoda has the build-quality of VW's a few years back - excellent. A friend who works for VW says that Skodas are now better built.

G

i work in the car trade, and its pretty much considered 'routine' now when doing a clutch on a DMF vehicle, that you change that aswell

If you keep in the clutch - almost no difference... If you have it in neutral and clutch out - sortof a rapid rattley idle - like any derv delivery van...

I start up with the clutch in and often turn it off the same way - really no change for me....

Performance-wise the car revs faster and appears to have faster acceleration - no heavy DMF inertia to overcome....

Yes - I love it!

I'll third that the whole feel and drive it 10 times better :thumbup:

In that order I have another question about the DMF.

I recently purchased a Spec stage 2 clutch, but without the SMF (I was in the US and brought it back in the suitcase :rofl:). In the near future I will be remapping and installing the new clutch on my old DMF. My car is a 07 vRS at about 11k miles right now with the BLT. Now the question - should I be concerned about the DMF, because I enjoy booting from 1700-1800 rpm. It is likely to be remapped with decently high torque figure and peak. :confused:

PS: When ordering the clutch in the US I was wondering whether to order the stage 2 or stage 3 clutch, but because I do mainly big city driving decided that with stage 2 the car will remain nice city drivable, without clutch heaviness etc. Did I do the right thing? :o

My friend had a Spec 3+ in his Leon - was alright :)

If it was me I'd be fitting either a new DMF or a SMF while the box was out.

My friend had a Spec 3+ in his Leon - was alright :)

it went pop ..... done aprox 3k miles with it ?!?

turns out the wrong bolts have been used by the fitters and fooked the clutch and flywheel, shes currently getting a standard one fitted as we speak :D

it went pop ..... done aprox 3k miles with it ?!?

turns out the wrong bolts have been used by the fitters and fooked the clutch and flywheel, shes currently getting a standard one fitted as we speak :D

I have no idea how that happened :thumbdwn:

hope mines will be alright - doesn't sound like your having much luck with cars

I have no idea how that happened :thumbdwn:

I think the wrong bolts etc would be the reason

I think the wrong bolts etc would be the reason

the bolts used came with the clutch so :confused:

Matts one on his old ibiza done exactly the same.....it was running 360 bhp though, there was no clue's to it atal before hand....just went started making bad noises, even felt the same to drive apart from it wouldn't boost right.

i aint had the best of luck with it but it's not costing me very much atal to put right..... :D and shes even in an audi garage using genuine audi/seat parts :rofl:

them old geezers cant be up to much who fitted it though :o

Matts one on his old ibiza done exactly the same.....it was running 360 bhp though, there was no clue's to it atal before hand....just went started making bad noises, even felt the same to drive apart from it wouldn't boost right.

i aint had the best of luck with it but it's not costing me very much atal to put right..... :D and shes even in an audi garage using genuine audi/seat parts :rofl:

them old geezers cant be up to much who fitted it though :o

I dont know much about the installation but we just gave them the kit with the bolts so they used them - they're good mechanics. 40 years as Volvo mechanics so they know they're stuff... :thumbup:

It seems to me that the main cause of premature DMF failure mainly concerns resonant vibration.

As we know, on a vRS, the DMF

I dont know much about the installation but we just gave them the kit with the bolts so they used them - they're good mechanics. 40 years as Volvo mechanics so they know they're stuff... :thumbup:

they have used the standard bolts which are to long for an uprated clutch/fly

hope they havn't done the same with yours as it could be the same way and yours will cost alot more to replace......and this clutch feels more or less the same to drive just nasty noises apeared

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