- Joined
- Dec 10, 2008
- Messages
- 7,253
Getting to the last mods on Sir Eddies LSR bike.
It was necessary to go back to Norton lifters to achieve the 10,500 rpm engine speed. The barrel was not built to hold Norton lifters and the bores were a little too large so I had to install aluminum bronze sleeves and build provisions for tabs to keep the lifters from rotating.
Here are the profiled lifters in place.
Here is the cylinder head. The ports are pretty nice but the 1mm oversize valves are somewhat shrouded in the bathtub chambers witch limits the flow potential.
The blue line is Sir Eddies head. The lower line is a stock 750 head and the two upper lines are Kenny and Martiyn's Fullauto heads.
I will be putting the lower end together next. Jim
It was necessary to go back to Norton lifters to achieve the 10,500 rpm engine speed. The barrel was not built to hold Norton lifters and the bores were a little too large so I had to install aluminum bronze sleeves and build provisions for tabs to keep the lifters from rotating.
Here are the profiled lifters in place.
Here is the cylinder head. The ports are pretty nice but the 1mm oversize valves are somewhat shrouded in the bathtub chambers witch limits the flow potential.
The blue line is Sir Eddies head. The lower line is a stock 750 head and the two upper lines are Kenny and Martiyn's Fullauto heads.
I will be putting the lower end together next. Jim