User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: Not your usual DMF thread

  1. #1
    Regular Member barney490's Avatar
    Join Date
    Dec 2009
    Location
    PRESTON
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default Not your usual DMF thread

    Just been reading an article in the IMI magazine about DMFs and thought i would share some of it with you.
    BMW were the first to fit dual mass flywheels in 1985, to the525 in a bid to reduce vibration and noise. Since then 63 million DMFs have been produced worldwide and LUK currently manufacture over 25,000 units a day in its factory in Germany, it has others in Korea, China and Hungary. LUK say that as for reliability, a DMF is designed to last a vehicles lifetime, up to 155,000 miles and also say that adverse reports are either down to wrong diagnosis or driver abuse. The technical director of LUK goes on to say, that DMFs are susceptible to engine misfire, making them work a lot harder and causing rattles, so a workshop may replace a DMF without fixing the engine misfire. He also states that poor battery voltage could also affect performance (i assume he means whilst starting) along with what he said were two common habits, overloading the vehicle and starting while in gear, although this was more aimed at van drivers.
    So how did the concept of a DMF come about? DMF development was driven by the arrival of high torque diesel engines, which generated more noise and vibration, a potential problem compounded by the current trend towards smaller engines and the use of aluminium for the crankcase and gearbox housing. Though lighter than cast iron, aluminium has poorer acoustics, causing transmission rattle when used with a solid flywheel.
    The article also states that the DMF gives better fuel economy over a solid flywheel and as i understand it, there are over 25 moving parts that make up a typical DMF.
    Do you think maybe these people do actually sit in ivory towers and put out this stuff? Seems its not the DMF, its either us or or cars that are the problem, LMAO!!!!!!

  2. #2
    Full Member
    Join Date
    Jun 2007
    Location
    N/A
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

    Mileage : 40000

    Default

    Quote Originally Posted by barney490 View Post
    along with what he said were two common habits, overloading the vehicle and starting while in gear, although this was more aimed at van drivers.
    That is spot on.

    Gazza4

  3. #3
    Regular Member Jezzy's Avatar
    Join Date
    May 2009
    Location
    S.E
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    I wonder if the bloke who wrote that fairy tale about DMF reliability used to work for FIAT and had a hand in developing the 1.9....

  4. #4
    Regular Member Das's Avatar
    Join Date
    Jun 2010
    Location
    Turdsville
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    35 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Lada

    Trim : Riva

    Engine : 6.0 V12

    Year : 1954

    Mileage : 567890987

    Default

    Yet still LUK are producing 25000 a day??????? FFS after all the documented cases you think someone would have found a way to prevent them failing so often. My dads failed with less than 22k on the clock of his 406, he drives like Miss daisy and never starts his cars in gear(always something he taught me from the day before I started driving) and never rides the clutch.
    You'd think if the only reason they were invented was because High torque diesel "which generated more noise and vibration" that they could have cured this with better engine and gearbox mountings.

  5. #5
    Regular Member barney490's Avatar
    Join Date
    Dec 2009
    Location
    PRESTON
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by DasArab View Post
    Yet still LUK are producing 25000 a day???????
    Alledged so, and thats just in there German plant so worldwide?????

  6. #6
    Regular Member
    Join Date
    Apr 2007
    Location
    Bristol
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : CDTI 150

    Trim : Design

    Engine : Z19DTH

    Year : 2005

    Default

    Need to produce 25K a day to keep up with the failure rate..............

  7. #7
    Regular Member Grumpy1954's Avatar
    Join Date
    Mar 2010
    Location
    Newport (Shropshire)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Ford Kuga

    Trim : Titanium

    Engine : 2.0dtci

    Year : 2014

    Mileage : 1200

    Default

    Quote Originally Posted by Jezzy View Post
    I wonder if the bloke who wrote that fairy tale about DMF reliability used to work for FIAT and had a hand in developing the 1.9....

    According to the OP they originated with BMW in the mid 1980's. As it happens, I had a 1985 525 BMW, but mine was automatic gearbox.

  8. #8
    Regular Member Jezzy's Avatar
    Join Date
    May 2009
    Location
    S.E
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by Grumpy1954 View Post
    According to the OP they originated with BMW in the mid 1980's. As it happens, I had a 1985 525 BMW, but mine was automatic gearbox.
    Yea, but BMW didn't write the brochure the OP was quoting from.

  9. #9
    Regular Member Grumpy1954's Avatar
    Join Date
    Mar 2010
    Location
    Newport (Shropshire)
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Ford Kuga

    Trim : Titanium

    Engine : 2.0dtci

    Year : 2014

    Mileage : 1200

    Default

    Quote Originally Posted by Jezzy View Post
    Yea, but BMW didn't write the brochure the OP was quoting from.
    OK, didn't see any mention of Fiat in OP, academic interest to me, as I had a 525 BMW, but even then I was on automatics for health reasons, not likely I've ever driven a DMF car, nor is it likely I ever will now.

  10. #10
    Regular Member barney490's Avatar
    Join Date
    Dec 2009
    Location
    PRESTON
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Original post was taken from an article written by LUK, so i imagine relates to all DMF's they produce, regardless of car manufacturer. Out of interest i spoke to my local factors and in 2010 they sold 22 DMF for Z1.9DT and only 3 DMF for Z1.9DTH. I had imagined that the 150 engines would suffer more from DMF failure, perhaps not.......

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. The Usual Problem
    By dontsnatch in forum Troubleshooting
    Replies: 5
    Last Post: 9th December 2012, 18:30
  2. the usual q's
    By jays_225 in forum Vectra C / Signum Car Chat
    Replies: 1
    Last Post: 12th May 2011, 17:49
  3. obsession or usual?
    By S14RRJ in forum The 'Off Topic' room
    Replies: 12
    Last Post: 20th April 2008, 16:10
  4. are these usual problems?
    By tonypc1 in forum Engine & Drivetrain
    Replies: 5
    Last Post: 11th July 2007, 19:49
  5. Not the usual mpg
    By simon5800 in forum General Chat
    Replies: 10
    Last Post: 20th June 2007, 16:21

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •