M50 Single mass flywheel

[mahdi93]

sorry for this topic maybe you talked too much about it but i have new "idea"
so im building an M50B28nv stroker with 2 intake cams from M50nv ( 2x240 degrees)
i use to have M40 flywheel and clutch on the m50b25 and it wasnt slip also we used the same clutch kit on M50B26 stroker ( which is M50B20 + M52B28 crank) also it didnt slip
reason why i use M40 flywheel because its lighter and solid mass is more reliable than dual mass
im gonna machine it to lightweight it ( remove maybe 3-4 kg )
the problem now is im not sure if it can hold the power now ? power will be 210-230hp ( some people can get more)
maybe i can machine also to have bigger diameter to use a little bit bigger clutch that will help for sure but the OEM one can survive ???

[roguetoaster]

Is your an E30 or E36 style flywheel? Either way the area of the flywheel surface is probably enough with a more aggressive than stock clutch setup, but it's likely a very borderline assembly size for the expected power.

[mahdi93]

iidnt understand you well bro , but the flywheel is from E34 518i M40B18 , for the fitment erything is good and ok
i was using this with the M50B25 with no problem .... and i dont know if it will work also with the new step M50B28 + 2x240 cams ( +20-30hp and 15-30nm at least )

[Northern]

You're probably the only person running a 215mm single mass on a 24v here, so I don't think you're going to find any advice on this. Most people are at least running a 228mm M20 flywheel/clutch, if not a 240mm M5x/M30 setup.

[mahdi93]

yap i thing im the only one loool
so m40/m42 flywheel will be ok to use with m50b25 and m50b26 stroker ( with experience )
the 240mm is for m52b28 M50b25 and less use a 228 one