Single or Dual mass?

[e30ftw 396]

I need a m20 flywheel and have one given to me but I don't know whether it's a single or dual mass (it's not with me yet still need to get it shipped to me), This is the only photo I have can anyone tell from this picture unless i get clearer ones of the other side??

Maybe you can't really tell from the backside, if so I will have to wait for better pictures. Was from a Pre FL 320 As far as I know, as it came from the same car that 240 in the picture is from.

Can't find any clear pictures on a m20 dual vs single mass wheel either.

Edited July 29, 2013 by e30ftw

[BM WORLD 1264]

its a single mass , probably a light one too maybe 6.3kg

as thats a early getrag 240 box with the steel shifter plate

[e30ftw 396]

Cheers Brent!

[e30ftw 396]

Okay I have one with me now....It's not that one though and this one is 9.4KG....

Can I safely get it taken down to ~6.5KG ? Any experiences too on what the general cost for lightening a wheel?

Edited September 1, 2013 by e30ftw

[_ethrty-Andy_ 2122]

i shaved back side of the outer ring down to the ring gear, and just a very very light surface skim on the rest of it to make it look pretty again. very drivable like that though did have any problems at all, drove the way it should

just re-read my build thread looks like i didnt weigh it though sorry.

[westy 614]

Okay I have one with me now....It's not that one though and this one is 9.4KG....

Can I safely get it taken down to ~6.5KG ? Any experiences too on what the general cost for lightening a wheel?

Yep, that's 'bout what mine is. Cant remember the cost though.

[1rotty 40]

hey john...mine is 5.5kg & cost $100 at Qualities in Hastings