Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I will be very interested in the answer to this, I always thought the Sohc bottom end is very over engineered, And will accept over revving and increase in capacity with out any hassle. Look forward to the answers Sent from my SM-A750FN using Tapatalk
The original fastening system has been more than sound on my 460 yoshi with 1/2 race cam and 26mm Amal carbs., more important is a heavy duty cam chain and heavy duty clutch springs, I have revved to 12000 rpm with them.