replacing dual mass flywheel

[davecox3]

Has anyone any experience of replacing the dual mass flywheel on a 2.2 x type diesel 2008 for a standard flywheel, I am told it doesn't effect performance and is a cheaper option to replacing the dual mass flywheel

[Rooster210]

I've replaced the dual mass flywheel in other vehicles with a regular flywheel and you could definitely tell a difference. Your engine is still going to make the same horsepower but you're going to tell a difference in drive-ability. 

https://en.m.wikipedia.org/wiki/Dual-mass_flywheel

 

[davecox3]

Can you explain please the difference in drivability thanks

 

[Rooster210]

20 minutes ago, davecox3 said:

Can you explain please the difference in drivability thanks

 

I can try but theres a few differences. Right off being from the states my terminology may be different.

Also the engine I swapped it in was a 7.0 Liter engine in a ford Pickup truck so the problems were more exagerated.

 

Diesel engines don't rev the same as petrol. Its a more violent jerking around of the flywheel. Where as petrol engines its a smoother rotation.

 

The one I changed I could put the engine in 1st gear and let out on the clutch without pressing the accelerator. It would pull off smoothly as if I had been driving a manual for years. After swapping it out. Until I got adjusted to the difference I stalled it more times then I took off. When it did take off half the time it jerked as it was taking off unless I pushed the accelerator further then I really needed to. At cruising speeds you didn't notice alot however the truck just felt "slower" if that makes sense. 

The purpose of the dual purpose is to absorb the torsional variations of it being a diesel engine. Any area where your vehicle is using Torque more then Horsepower its going to act differently because the torsional variations are going full force into your gear box.

If you're in the portion of the power band where the car is relying more on HP to get the job done then it won't be as noticable. I was always afraid it would cause added wear on the rest of the driveline

 

Can it be done? Absolutely.

Will it effect performance? If we're talking HP and Torque numbers on a dyno, maybe not. 

If we're talking about the aspect of how your car performs as a daily driver and driveability. Absolutely

 

[JOE-DOT-COM]

hi

dual mass flywheels were added for one purpose, the make the engine feel smoother

basically its a cushion added in the flywheel to remove vibration from diesel engine

some are mechanical springs, some rubber and a combination of the two, as they get older, they fail and cause the outer part of the flywheel to come loose, vibrate and move when the clutch is pressed

gong to a solid one is by far the best option

there no performance loss, but you may feel more vibration when changing gear

cheers

Joe