How much does a dual mass flywheel weight?
The weights of the flywheel/clutch assembly work out as follows: Stock (dual mass) 52 lbs. "Stage 1" (dual mass) 44 lbs. Stage 2 (single mass) 25 lbs.
How long does a VW dual mass flywheel last?
DMFs can last more than 100,000 miles but may go bad in as little as 20,000 - it depends on the quality of the part and especially your driving style. Drivers who are not smooth in their clutch engagement cause serious amount of wear every time they get behind the wheel.
How do you know if dual mass flywheel is OK?
Visual Inspection of a Dual Mass FlywheelCheck the friction surface for excessive heat checks and scoring. ... Check for excessive grease loss due to overheating. ... Check for visible damage including the ring gear, and other parts found inside the bellhousing.Check the rotational free play. ... Check for secondary plate rock.
How much does a single mass flywheel weigh?
When converting to a single-mass flywheel you can choose between 22lb, 17lb or 14lb weight flywheels. Which one is right for you? It's very common to use lightened single mass flywheels when seeking best performance in modified cars.
What happens if DMF fails?
When this happens the flywheel will no longer be able to adequately filter out violent variations of torque or revolutions that could cause an unwanted vibration or rattle when driving. These vibrations can usually be felt on the floor of the car and are due to the failure of the springs and other internal components.
Does DSG have dual mass flywheel?
he was also told explicitly by the people above that the DSG does NOT have a dual mass flywheel, but rather "just a flywheel", attributing the sounds to clogged fuel filter, or perhaps fuel pump.
How much free play should a dual mass flywheel have?
The free travel should not be more than six teeth of the starter ring gear. If it is more than six teeth, it is highly likely that internal damage exists and the DMF will need replacing.
What causes a DMF to fail?
Causes Of Dual Mass Flywheel Failure The main reasons are: Heat - Excessive heat is a big cause of most dual mass flywheel failures. A slipping clutch generates heat; if your clutch is worn, you can still save the flywheel if you get the clutch replaced early enough.
Can you skim a dual mass flywheel?
The SMF may not be as smooth/soft, etc. but it will take masses of abuse without failure. The added bonus is the SMF can be lightened, skimmed and balanced.
Which is better dual mass or single mass flywheel?
The energy required to spin up a single-mass flywheel is much less than that of a dual-mass, meaning your car will be much more responsive. The biggest difference can be seen in cars with lower power outputs. A car with 150 horsepower will spend a significant amount of its power rotating the flywheel.
Why are DMF so expensive?
The idea is that the rubber creates smoother operation of the clutch release and reduces vibration in modern cars. The main reason these jobs tend to be more expensive than with typical older type clutch jobs is the price of the parts. A standard style flywheel is much more durable so does not often need to be changed.
Whats better SMF or DMF?
Therefore, the SMF offers a particularly suitable solution for vehicles where the original DMF is unable to dissipate heat effectively, but in addition, it offers greater longevity over DMF technology and is much more cost effective to replace.
What are the downsides of dual mass flywheels?
Although highly efficient, DMFs aren’t without flaws. The increase in complexity means that you’re looking at compromised durability compared to an average solid flywheel. On top of that, when a DMF decides to go, it’s gone.
What is single mass flywheel?
Single mass flywheels are designed to replace DMFs by meeting the same or similar dimensions without internal complexity. Instead of having two masses moving independently, you now have a solid metal slab connecting your clutch with your crank.
Why add a flywheel to crankshaft?
Adding a flywheel to the end of a crankshaft not only irons out the torque spike, but it also allows the engine to run much more smoothly. The rotating mass acts as an energy storage unit that takes all of those violent vibrations and dampens them significantly.
What is a flywheel?
A flywheel is a component that is bolted to the end of the crankshaft. It’s a heavy disc whose purpose is to neutralize the violent torque pulses most engines put out.
Why are single mass units more durable than DMFs?
Single mass units are generally much more durable than DMFs due to their simplicity. If they eventually fail, there’s no risk of them falling apart, which can’t be said for the dual mass design.
Is a single mass flywheel cheaper than a dual mass flywheel?
Price – It’s no secret that single mass flywheels are cheaper than their dual-mass counterparts. The sheer fact that there are no complex springs inside makes them easier to manufacture and hence less expensive to sell.
Do flywheels produce vibrations?
The demands of modern engines have put a lot of strain on conventional flywheels. High torque, fast spinning motors have proven to be much less refined in terms of vibrations they produce. Managing these vibrations has reached the practical limits of simple flywheels.
Dual mass or single mass flywheel
The sticky clutch pedal strikes again, so I have decided to change the clutch. After looking at various options I have decided to stick with the oem. Mrc are likely to be doing the work but I need to decide between the dual mass or single mass flywheel.
Dual mass or single mass flywheel
The sticky clutch pedal strikes again, so I have decided to change the clutch. After looking at various options I have decided to stick with the oem. Mrc are likely to be doing the work but I need to decide between the dual mass or single mass flywheel.
reaper
As warned the clutch on my MK6 R is struggling some what with a mysterious increase in torque my question is which up rated clutch kit is best bearing in mind that I what to keep a dual mass fly wheel ?
fraz
So you've got a mysterious increase in torque - - That usually happens when the ECU is mapped it's expected Are you in a 6R or 7R? manual or DSG?
reaper
I should have been more clear, I have a manual 6 R and want to keep the daul mass flywheel but unsure which manufacturers clutch kit to go for? The choices are either Sachs or Helix which are both Capable of handling the required torque, but unsure which is best?
fraz
Out of interest what is on the Golf as standard as far as the flywheel is concerned? - single / dual? Have you added another flywheel or kept it stock?
Ash-Regal-Autosport
Take a look here at the clutches available for the Golf R http://www.regalautosport.com/shop/index.php?route=product/search&search=2.0tfsi%20clutch
reaper
Hi Ash, thanks for the clarification on the options, I will be changing the DMF at the same time as its a PITA job I just want a kit that's good for road use and not have a clutch pedal that requires a giants leg to press it lol
Ash-Regal-Autosport
The Sachs Organic kit would be the one to go for, progressive engagement and the Sachs pedal is not as firm as other kits on the market.