Dual mass flywheel & Clutch - opinions

For 4x4 owners, you must register to post but anyone can read.

Moderators: Moderators, User administrators

Forum rules
You can find further syncro specific information on the Syncronauts website.

Re: Dual mass flywheel & Clutch - opinions

Postby silverbullet » 30 Nov 2016, 17:56


A Dual mass flywheel or DMF is a rotating mechanical device that is used to provide continuous energy (rotational energy) in systems where the energy source is not continuous, the same way as a conventional flywheel acts, but damping any violent variation of torque or revolutions that could cause an unwanted vibration. The vibration reduction is achieved by accumulating stored energy in the two flywheel half masses over a period of time but damped by a series of strong springs, doing that at a rate that is compatible with the energy source, and then releasing that energy at a much higher rate over a relatively short time. The compact dual-mass flywheel also includes the whole clutch, (with the pressure plate and the friction disc)

TDi engines in a nutshell. The need for the DMF springs to be tuned to the engine looks to be an important consideration.
'85 syncro 'velle resto, '90 SA Microbus project, '95 SA Microbus 2.6i

User avatar
Posts: 10938
Joined: 08 Jun 2009, 09:51
Location: Surrey Syncronaut #156
80-90 Mem No: 6908

Re: Dual mass flywheel & Clutch - opinions

Postby Dutchdude » 01 Dec 2016, 20:15

I bought a new DMF at Busfest and will be fitting it next time engine or box needs to come out. Now running solid flywheel with the origininal TDI clutch on a tdi input shaft and I have done so for the last 89.000 km. I am now fully convinced fitting a DMF will expand the life of the box and also eliminate the "idle rattle".
1991 Syncro Westy 16"
1990 Westy California
2003 Karmann Colorado 580H
1990 Golf mark 2
User avatar
Posts: 148
Joined: 10 Jul 2012, 22:27
Location: The Netherlands
80-90 Mem No: 206

Re: Dual mass flywheel & Clutch - opinions

Postby PC52 » 03 Dec 2016, 09:24

Thanks Rob and Ian,
Seems to be the way to go, done a bit more reading aswell. It's gotta soften the blow to the gearbox so in our case anything has gotta help.
1.9 TDI Syncro Multivan
1.9 TDI Doka project in progress
User avatar
Posts: 372
Joined: 21 Jul 2006, 15:25
Location: Northants. Syncronaut: 96
80-90 Mem No: 3428


Return to Syncro

Who is online

Users browsing this forum: No registered users and 17 guests