DMF or solid flywheel?

[Dogous]

2008 Golf 5 1.9tdi
150K
making a funny noise at idle
DMF suspected

Is replacing it urgent or could it be left for 20K miles?

Is it worth paying extra for a DMF or would a cheaper solid flywheel be
fine?

[steve robinson]

Post by Dogous
2008 Golf 5 1.9tdi
150K
making a funny noise at idle
DMF suspected
Is replacing it urgent or could it be left for 20K miles?
Is it worth paying extra for a DMF or would a cheaper solid flywheel be
fine?

I would stick to the DMF engines not designed for a solid flywheel

[Fredxx]

Post by steve robinson

Post by Dogous
2008 Golf 5 1.9tdi
150K
making a funny noise at idle
DMF suspected
Is replacing it urgent or could it be left for 20K miles?
Is it worth paying extra for a DMF or would a cheaper solid flywheel be
fine?

I would stick to the DMF engines not designed for a solid flywheel

I concur. There are a few issues with a solid flywheel:

1) Gearboxes are built to cost, and suffer from the power drive impulses
from an engine with solid flywheel. DMFs smooth out drive from your 4 or
so cylinders.

2) The directly coupled flywheel in a DMF is lighter, and so crank
vibration modes are higher in frequency. Using a solid flywheel,
resonances will occur at lower engine revs and less likely to be
absorbed, depending on the design of the DMF.

My conclusion some time ago was to replace like with like.

[Dogous]

Post by Fredxx

Post by steve robinson

Post by Dogous
2008 Golf 5 1.9tdi
150K
making a funny noise at idle
DMF suspected
Is replacing it urgent or could it be left for 20K miles?
Is it worth paying extra for a DMF or would a cheaper solid flywheel be
fine?

I would stick to the DMF engines not designed for a solid flywheel

1) Gearboxes are built to cost, and suffer from the power drive impulses
from an engine with solid flywheel. DMFs smooth out drive from your 4 or
so cylinders.
2) The directly coupled flywheel in a DMF is lighter, and so crank
vibration modes are higher in frequency. Using a solid flywheel,
resonances will occur at lower engine revs and less likely to be
absorbed, depending on the design of the DMF.
My conclusion some time ago was to replace like with like.

Was looking at solid but intending to go with DMF now.
Thanks to you both.