Wat are they,
how they work
can you put a lightened flywheel onto the dm setup

Had the clutch done on the st220, it smelt like a little clutch burning after done, guy said ur dual mass flywheel may be on its way?
i dnt no wat one is, well sort off, thanks.

 

There are companies that do 'normal' replacement clutchs that will replace the Dual Mass set up. Most modern Mondeo and Focus models have them, they are a weak point and, I'm told, can cost the best part of £1000 to replace..

Not sure on the technical side of how they work though..

 

taken from honest john forum

The flywheel is effectively a weight which is fastened to the end of the crankshaft of the engine. The power from the pistons tends to be created in “pulses” and the weight of the flywheel smoothes out these pulses by providing inertia to the rotating engine. As well as providing a weight the flywheel has a gear around its circumference on which the starter motor operates and is a convenient means of attaching the clutch which provides a variable connection to the transmission.

Modern diesel engines generate high torque and as a result they need extra smoothing out or “damping”. To help with this process a DMF (Dual Mass Flywheel) is fitted. This is effectively two flywheels that transmit the drive through a number of springs which cushion the drive to the transmission

 

Just had to have my DMF and clutch replaced on my Civic TypeS 2.2, it is now a common fault on these engines and would of cost me £1780 if i had to pay (£900+VAT was the flywheel alone!)

 

in the same way that a clutch plate has springs to take up the shock, the flywheel is in 2 seperate parts almost

it's the same with the front crank pulley being made of a bit of metal and another bit of metal with a rubber in the middle, or the prop doughnut on the seirra

just something else to go wrong because he it fails it makes one hell of a mess and you probably need a new gearbox as well as it tends to smash the shit out of the bellhousing

 

I know they give trouble in VW's too and we always replace the twin mass flywheel when doing a clutch kit. Its better than doing a clutch kit and having to strip it again after

 

i really wanted an MR2 or a M3, what i got in reality was a Nova 1.3 SR, blew the engine in a little over 2 weeks, had a 1.8 fitted, which felt really fast at the time, cut the springs in half, which meant it sat on the bump stops and didnt handle at all, obviously i crashed it into a telegragh pole

 

step away from the keyboard you crazy crazy foolish you

 

On the VAG cars (ie my skoda octavia TDI) the flywheel is in 2 parts, with the dampers and springs between them taking up the Shock when drive is transmitted. The OE clutch plate is solid, ie has no springs in it.

When you do a solid flywheel conversion, the flywheel is a solid one (surprise eh?) and the clutch plate is one with springs (ie a conventional clutch plate)

The only supposed downside is a tiny bit more vibration on tickover, but its gotta be less vibration than a fucked DM flywheel gives out.

Im having mine changed on friday cos the dual mass is fucked.

The skoda taxi boys had so many problems with the dual mass that Skoda UK actually list a taxi spec flywheel /clutch kit off the shelf.

The upside is because of the popularity of these solid flywheel conversions, that most factors now stock complete kits for most cars - my octavia kit is £180 incl vat (trade). The OE flywheel from skoda was £300+the clutch kit - its a no-brainer really.

 

so can i convert to single flywheel or a fidanza lightened version?

 

You'd need to establish if they do one for the petrols. I know they do the conversion flywheel/clutch kits for most ford diesels, ie focus/mondeo/transits.

 

I'd be amazed if the solid replacement for a Dual mass is lightened.

I suppose you could swap to a solid then get it lightened and balanced, but it's so not worth it on a relatively standard car.

 

just had the clutch done on my daily runner seat leon fr (180bhp) the clutch alone was 600 euros.was told the dm flywheel was another 800 euros...as u could guess i took flyheel off and took it to local vw garage who said normally they will last for 2 clutches and its been fine so far

 

think the dm in america is $200.

 

are you upping the power on the mondy ?