Resurfacing dual-mass flywheel

I was trying to decide whether to resurface the dual-mass flywheel or to get a new one. I read repeatedly about not resurfacing DMFs but the machine shop dude said he’d do it and thought it would be fine. Eventually I saw this post:

https://forums.nicoclub.com/resurfacing-the-dual-mass-flywheel-t598632.html

And so I decided to save money and do it. I know the concern is at least partially because of the springs. Mine has a little more rotation and tilt than a video I saw on YouTube of a new Mazdaspeed one. Hopefully I won’t regret it He did a good job I think.


Just sharing so others know it’s possible if their machine shop can do it.

 

Finding a shop which can is tough. I scrapped mine. Got a new LUK for $550 shipped. Ebay, rockauto etc.

 

I seriously considered the LUK one (it looks literally identical to Mazda’s, which also has LUK on it...) but I’m already over budget on this rebuild so $95 for the resurface was hard to resist.

 

I have not yet in 14 years of owning one, seen a successful dual mass machining.

And LUK is the oem supplier. 450 bucks difference than machining. Which is usually 250 for dual mass. Hopefully they know.

 

Is there anything I should be looking for with it? I wouldn’t know if I got a deal since I’ve never had it done before

 

No idea. Thickness is key. Mine was loaded in hot spots.

 

Just as an update, I’ve driven on the resurfaced dual mass flywheel for about 160 miles and so far it seems fine.

 

I’ve driven 2-3000 miles on the resurfaced DMF and obviously the resurfacing itself was fine.

However … I’m now seeing first hand the other issue. The internals wear out, and mine (presumably 160k+ miles) has been making noise. Now I regret not replacing it when I rebuilt the engine. I’m not looking forward to replacing it especially because I have two other cars needing work.

I ordered a Luk. It seems like OEM.

 

Just FYI, when I was still running a stock flywheel, someone suggested using set-screws to bind the dual mass to prevent it from spinning. I put in the set-screws myself, took it to a shop that turns standard flywheels, and it seemed to come out okay. I did eventually switch to XClutch with their chromoly flywheel, which I am very happy with.

 

Interesting idea to use set screws.

I’m still using my dual mass, haven’t changed it yet. It’s not making any more noise and has been totally fine. Now I’m not regretting changing it out The new one has just been sitting around waiting to go in. I will do it eventually.