I have a 6 bolt DCT flywheel, I thought this was already handled. I'll send you a PM.
[GroupBuy] MFactory DCT Flywheel
- Thread starter doublespaces
- Start date
I’m trying to follow the logic here. Are you supposing that the crankshaft is different between 6 bolt n54’s depending on if they are 6mt, 6at, or DCT? Because if the crankshaft is the same (and it is) then the pcd is the same between the flywheels.
Count me in on a 6 bolt. I got cylinder 6 misfires the other night on 26 psi.
Hi all, I have a 17 F80 m3 with an ssp spec x clutch (dct). I was wondering if this new flywheel would work for me too. If so, I’m in! I’m guessing 6 bolt design is right for my setup. Thanks!
I have a 2012 335is,
(Production date Feb 2009 and later)
2009 and later, not a good choice in words, later as in prior to 09 or later as in after 09?
Which would my car need?
(Production date Feb 2009 and later)
2009 and later, not a good choice in words, later as in prior to 09 or later as in after 09?
Which would my car need?
Hey guys,
sorry for the delay with this. We've finally managed to confirm the fitments, and everything is good to go, so we can now start to accept deposits.
price is $499.95 inc free shipping within US/Canada/Europe (other countries, please PM for shipping cost). We will require a 50% deposit ($250) to secure your place in the group buy.
current ETA is around 6 weeks. As soon as they are ready, I will ship out a sample to doublespaces to test the fitment to make sure everything is ok. We can then proceed to ship out the rest of the batch.
if you are interested in joining the group buy, please PM me
sorry for the delay with this. We've finally managed to confirm the fitments, and everything is good to go, so we can now start to accept deposits.
price is $499.95 inc free shipping within US/Canada/Europe (other countries, please PM for shipping cost). We will require a 50% deposit ($250) to secure your place in the group buy.
current ETA is around 6 weeks. As soon as they are ready, I will ship out a sample to doublespaces to test the fitment to make sure everything is ok. We can then proceed to ship out the rest of the batch.
if you are interested in joining the group buy, please PM me
I am trying to understand the pros vs cons with this "upgrade".
Just eliminating possible vibration at high RPM's?
Just eliminating possible vibration at high RPM's?
If someone provides moment of inertia [kgm2] for the lighter flywheel (which should be easy to obtain from any CAD) I could roughly calculate torque gain per gear. The torque increase depends on overall vehicle acceleration, so expect biggest gains when going downhill.
Even without provided inertias, fact is that this mod will make the biggest difference for lower gears (when engine revs up quite quickly), where we don't necessarily need that much more torque due to traction.
Also lower engine inertia should allow for faster shifting. But here is a catch. The transmission control SW has the original inertia values incorporated, so first off all it will be targeting original gear ratio change rates and controlling in close loop clutch torque to achieve old rates. And second since the close loop will be reducing clutch torque to achieve calibrated rates, I would expect clutches adaptation to be affected by that to (if they perform clutch adaptation during shifts, which is likely). So the clutches will adapt apply lower torques. Which is opposite to what we want, because in gear, the torque that will be going to the transmission will be generally higher with lighter flywheel, so in lower gears (for which torque increase will be noticeable) we could become to see clutch slip after adaptations. However, depending on how the software is done it is very likely that in gear, transmission clutch valve becomes fully opened, and clutch clamping force at this point is determined purely by line pressure. So as long as the line pressure margin is enough, it should be ok.
To summarise, I think trans should be fine. Initially I would expect slightly (because close loop doing its job anyway) faster shifts and after adaptations do their job, back to old shift times. My guess is also that line pressure defines clutch torque when in gear, so it should be fine as well (that could be verified by checking solenoid currents, maybe in INPA or sth).
BTW, with lower inertia, the launch control RPM level finally could be adequate for this car.
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