Originally Posted by ziggy12345
I think its 7mm isnt it? Also the hole from the crank must be unbroken by the turbo scoop
i measured the crank inlet of my mega zx12 motor when i first got it to check insides before running in and measured the crank inlet to be 6mm. So i just assumed, and i was sure someone else also told me a while back it was a max 6mm for efra crank hole, but i could be wrong.
you must be right about the crank hole not allowed to be unbroken by the scoop, as the little scoop if you'd call it that, that it does have is only really a little mark or slight swirl on the counter balance.
i dont think you will be able to get the sleeve out, most likely one metal was heated and the other cooled then slid in making impossible to seperate once united. your best bet would be to purchase a ifmar crank if your worried about it, you will get good performance by tuning your motor right with the efra crank then having an ifmar one and being off on tuning, this is just how i would feel about the situation.