adjat84th
Veteran Member
Brass takes the beating all day long. My ALH has 311k miles on it and has had a SMF since 100k I believe. I bought with 167k on it and it's been pretty bulletproof and a blast to drive as well.
Thanks budIf the engine did not require the DMF there would not be one installed.
Uh well it sure looks like ECS is still selling it. https://www.ecstuning.com/b-dkm-par...kit-with-single-mass-flywheel/mb-034-142~dkm/awaiting ECS/DKM decision on warranty. DKM is NOT selling this Stage 2 SMF kit anymore. Sounds like I'm not the only squeaky wheel.
harmonics are NOT conducive to longevity.
Harmonics are the result of sine wave lengths. Guitar string being the best analogy I can come up with. The whole string vibrates up and down, at the halfway point, if you dampen the string there, you get exactly half the vibration length, an octave higher. You can dampen 3rds, 5ths, etc, isolating some of the frequencies that make up that full rich bodied tone of the whole string. All those complex interactions make beautifull music, the piano being the most complex vibrationary machine in the whole orchestra. Hit one string and EVERY other string in the piano is also vibrating and contributing to the overall sound.
In an engine all those different frequencies of movement, lets not forget that, can lead to unforseen consequences. Some vibes will reinforce similar frequencies in apparently unrelated parts. If everything is a shakin' and a hummin', a) you're losing energy; b) unwanted stress, sometimes on parts that can't handle it. Some little critical part is now rattling itself to pieces. There's lots of little bits in an internal combustion engine that have critical tolerance dimensions.
That 20 cents worth of plastic or tiny bearing failure can bring thousands of dollars worth of machine to a halt.
It's quite extraordinary that they run at all, let alone as long as some do.
This where electric cars have a huge advantage, a LOT less moving parts. Read a recent article about a small fleet of Teslas that they've been renting out, 100s of thousands of miles so far, very few problems. Keep the batteries charged,
obviously tires and brakes need serice, but that's about it. The technology on how to build a good electric motor has been around a loooong time. And so quiet they have to create noise to warn pedestrians.
And thus ends the dissertation.
Man if only we could get these for the 2.0 cr engines.CUAA uses massive DMF (for DSG only) that can handle >400ft-lbs. It's 11mm thicker and is 8-bolt arrangement, so not upgradeable for us. It does however prove that a DMF can handle more torque, just need the right manufacturer to come along and request one.
Put a fluiddamper on it. It'll help.Is there maybe anything new?
Referring to "upgrade DMFs"?
Basically.... I destroyed now my 2nd gearbox due to SMF.
The first time I was using a really light SMF, combined with a clutch plate, which was meant for DMF,
so literally no vibration filtering. Didnt took too long, till the first gear failed, but I kept driving,
because its my daily driver and on some point you get used to shift without synchros.... like,
if I take my friends with me, they are like: cant really notice that you dont have synchros anymore
(lots of double clutching and rev matching).
After it was I nice day, I changed gearbox and used the SRE kit (again SMF), the SRE SMF was
much heavier than my other one and the springs in the clutch plate are really big.
The rattle in idle and while driving was much quieter with the SRE kit and I hought.
Okay. Maybe I get lucky with that. Hmmmm.. sadly not. 3rd gear synchro dead again,
but this time it took at least 2 years of driving. Other gears are still fine.
Now... Im will soon rebuild my gearbox (or rather said the synchro) and in this occasion, I want
to go back to DMF, even I have to get rid of that nice torque.....
So my question is... is there any DMF out there which can take torque?
Or do we still have to use the "stock flywheel", because there is no good replacement?
Best regards.
OkayOkay. Gotchu. At which rpm do you think, can a normal DMF take around 650Nm?No upgrades exist for the DMF, best solution is to choose a turbo large enough that doesn't make so much torque below 2200rpm. It's not that DMFs can't take the torque, they just don't like it when it's below that 2200rpm range.
I heard that a lot. Is there any how to do it?Put a fluiddamper on it. It'll help.
It's just a fluid filled harmonic balancer. When you remove the dmf you gotta add a fluiddamper or you'll eat the trans.OkayOkay. Gotchu. At which rpm do you think, can a normal DMF take around 650Nm?
I heard that a lot. Is there any how to do it?
Or which one I need to buy? And where does it get mounted?
Like I´m a complete noob, when it comes to fuilddampers. Really like 0 idea.
Help would be appreciated!
Is there maybe anything new?
Referring to "upgrade DMFs"?
Basically.... I destroyed now my 2nd gearbox due to SMF.
The first time I was using a really light SMF, combined with a clutch plate, which was meant for DMF,
so literally no vibration filtering. Didnt took too long, till the first gear failed, but I kept driving,
because its my daily driver and on some point you get used to shift without synchros.... like,
if I take my friends with me, they are like: cant really notice that you dont have synchros anymore
(lots of double clutching and rev matching).
After it was I nice day, I changed gearbox and used the SRE kit (again SMF), the SRE SMF was
much heavier than my other one and the springs in the clutch plate are really big.
The rattle in idle and while driving was much quieter with the SRE kit and I hought.
Okay. Maybe I get lucky with that. Hmmmm.. sadly not. 3rd gear synchro dead again,
but this time it took at least 2 years of driving. Other gears are still fine.
Now... Im will soon rebuild my gearbox (or rather said the synchro) and in this occasion, I want
to go back to DMF, even I have to get rid of that nice torque.....
So my question is... is there any DMF out there which can take torque?
Or do we still have to use the "stock flywheel", because there is no good replacement?
Best regards.