You can not run larger oil clearance on a 40x15mm bearing. I know of a 40x17mm bearing that fits with minor mods.
Also modify your oil pressure. You need 1-1,5bar on top of stock.
No manufacturer makes a really bearing for the 1/2/4E series engines(This is why I found the 17mm bearing). ONLY the agents have lead copper bearings, this is largely the reason why they are so expensive!
Also modify your oil pressure. You need 1-1,5bar on top of stock.
No manufacturer makes a really bearing for the 1/2/4E series engines(This is why I found the 17mm bearing). ONLY the agents have lead copper bearings, this is largely the reason why they are so expensive!