Hi, I have a 2010 1.9Tdi superb estate. The duel mass flywheel is knackered,so I need to replace it. The engine number starts BXE. Does anyone know if it has a hollow crank or solid, as I would like to convert to a single mass flywheel. Thanks

A hollow crankshaft 😲 where did you hear that gem?

Apparently some of the modern diesels have hollow journals Jaguar/Land Rover spring to mind ( they snap regularly). The garage that I took it to advised against fitting a single mass flywheel as the duel mass one takes up some of the torque

They're not hollow, but modern engines that are engineered to use a DMF from the outset will have lightened crankshafts compared to engines that were originally engineered to use a SMF, because the DMF absorbs a bunch of the vibrations and shock loads from the transmission. Putting a SMF into a newer engine is not a great idea. A new DMF now is likely to last the remaining lifetime of the car unless you're putting up very high mileage and it's much smoother and more refined than a SMF conversion.

If you can replace it with a Dual mass 
The solid conversions I have done on taxis were  not very good they just dont feel right

£325 from ebay for full kit

Hi all, thanks for the advice. Seems like its got to be DMF then. The car is just run in at 218K. So hopefully the new one will last as long. Is there any make that is better than the rest? Thanks

6 hours ago, Bodysnatcher1 said:

Hi, I have a 2010 1.9Tdi superb estate. The duel mass flywheel is knackered,so I need to replace it. The engine number starts BXE. Does anyone know if it has a hollow crank or solid, as I would like to convert to a single mass flywheel. Thanks

 

One of my sons bought a 2008 BMW 320D about 3 years with the infamous N47 diesel engine which he should have never bought! But that's another story!  

 

So after the cam chain had broken! We took the engine out and repaired it. The car had done around 120,000 miles at the time. There wasn't anything to say there was anything wrong with the clutch but on checking the clutch friction plate it was quite worn and only had a few more 1000 miles left in it. Not to change it would have been a false economy.

 

I also found the DMF that had an excessive amount play in it. To get them tested properly they need to go on a test rig. But as a rough rule of thumb using the ring gear as a reference there shouldn't be more than 3 teeth of rotation in either direction. We had around 5 teeth of movement in either direction!

 

Bearing in mind the engine repair had already cost several £100 and there was no guarantee the engine was going to be okay I was mindful of throwing good money after bad the DMF alone was about £400! without a clutch! £180 for a clutch and solid flywheel conversion seemed a much more attractive proposition! On asking round there were  mixed opinions if it was worth doing or not. Some people said it could lead to premature gear box failure, excessive vibration etc etc.

 

So I decided to buy a solid flywheel and clutch kit. You can see in the video that the DMF is quite a substantial lump of metal and heavy, the solid flywheel is even heavier! The other flywheel you can see is for a 5.0 Ford Mustang.

 

I wished we'd replaced the DMF! The engine repair was a success and 3 years on still running strong. But a certain revs usually in 2nd gear accelerating there is quite a lot of vibration and on tick over it sounds like a bag of spanners till you depress the clutch. 

 

So personally I'd never bother with another solid flywheel conversion.

 

 

Edited 13 February, 20224 yr by Derbyshirebod