Quote Originally Posted by Sidewinder View Post
Sorry I misrepresented what I meant. Does our current factory pulley act as a harmonic balancer? That was what the light weight pulleys for the 60 degrees didn't take into account and you lost that harmonic balancing. Does anyone know in regards to these engines whether we have an external balancer?

Harmonic balancer - Wikipedia, the free encyclopedia
You can balancing all the pieces, if you pretends exceed or go to the top of te engine OEM limits, breacking the OEM rev limiter, in 4 L engines, it balancing independient, chec the piece oem...

I have thís pulley and alluminium flywheel, clutch stage 2, without any problem two year and arround 25,000 milles...

The crank oil seals gone in a excelent condition, mabe these pieces are the firs piece damaged, but is'nt happens...