Flywheel Q's

[R.O.R-2.0]

so, the flywheel on our old 020 equipped VWs is single mass correct? just backwards of standard setup? (flywheel on outside instead of pressure plate)

seems to be a good design..

why did VW decide to try different dual mass flywheels?

everything equipped with DMFs, do they all have problems?

i know the fords had problems with their dual mass wheels..

and does anyone know the reason that VW decided to use the backwards flywheel/pp setup? is it considerably more compact than a normal FW & PP would have been? seems to take up about the same amount of space, if not more space then a conventional style FW & PP (like the fox,dasher,quantum got)

[Quantum TD]

The setup is inverted from the earlier cars (air-cooled) and longitudinal. So, technically, they went back to their old ways.

Only a few DMF VW cars I've heard of have problems. Some 2001 models had them replaced under warranty.

I've replaced one from DMF to SMF on my brother's 2003 TDI (since sold). Felt great: about as nice as a fuctioning DMF.

A tech at the dealership where I work complained of vibrations on his 1.8T Jetta with a SMF. He went back to DMF and claims it's much better now.

[nathan_b]

Ever heard a single mass fw mk4 or 5 tdi? they rattle like crazy at idle, that's probably why they did it, only way to make a 02a quiet, at least when it's new..

dual mass are dumb, I agree. but vr6s have single mass and are quiet. it's strange.

[catlin_cava]

I have a DMF and it's coming apartness we speak, they can't handle power added, id rather have a consistent vibration from a SMF at idle then my DMF making my car buck and jerk at an idle right now

[rallydiesel]

Some mk5's had problems with the dmf falling apart and taking out the transmission in the process. Dual mass are common on various diesel engines to quiet down the power pulses. I think they are starting to be used on new gassers as well. I switched my mk5's to a single mass and although it is quite rattle-y, I would never go back to a dmf, even if they were bulletproof. DMF have a different feel than smf's. Kind of vague compared to the definite engagement point of smf's.

[mystery3]

dual mass are dumb, I agree. but vr6s have single mass and are quiet. it's strange.

Inline six cylinder motors tend to be very smooth and well balanced ask BMW. And don't try to tell me the vr6 is a v6 because that's bull*** it only has one head and what 15* angle that's why they sound good unlike any other v6 in the world with the possible exception of the old alfa units.

[R.O.R-2.0]

V6s sound better than inline 6s tho..

[catlin_cava]

V6s sound better than inline 6s tho..

VRs have the BEST sound for a 6 cylinder, It sounds better then my truck

[Powered by Spearco]

So why is it that all the MK3 cars had SMF with O2A transmissions including Corrado and Passat? While most all the MK4 cars had DMFs with O2J trannys?

VRs do have vibrations at around 1200 to 1500 RPM. Also they have a larger/heavier crank pully dampener.

I prefer the SMF on gas cars and even the diesel cars.

[maxfax]

VW, Ford, GM, Mercedes, and Dodge and probably some others out there all used a DMF at some point or another..  And they all had problems at some point or another..  It seems that if you never tweek the power, haul too much, or perform any other variety of "abuse" to them they will be fine..   Yeah right, like that's gonna happen! 

[catlin_cava]

If I'm at 1500rpm and I floor it you can hear the flywheel beating itself in my car up to 2200rpm lol

[Powered by Spearco]

most likly due to salt corrosion?

[R.O.R-2.0]

most likly due to salt corrosion?

i wonder?

[R.O.R-2.0]

V6s sound better than inline 6s tho..

VRs have the BEST sound for a 6 cylinder, It sounds better then my truck

i just like the sound of a 60* V6 turning 8000 rpms tho.. my toyota sounds awesome goin thru mud holes (real y-pipe, and flowmaster 40 series, no cat)

VR does sound better tho, hands down.