- Joined
- May 7, 2005
- Messages
- 7,607
The geared Morgo pump used on Triumphs works well on racing bikes but on street bikes its overkill, too much oil being pumped just gets bypassed by the pressure release valve and heats the oil. On a Triumph you have to increase the hole side on the relief route to allow the extra oil to get away fast enough. Much the same would happen in an over pumped Norton.