Joined
·
56 Posts
Hi,
After camshaft changed and many hours trying to set the weber DCOE right, I finally decided to stop the guess work and purchase a Wide-Band AFR meter. The good news: I was correct when i sensed that I was running too rich when Main Circuit come into action (AFR of 10.9 to 11.1). Idle circuit seems reasonably rich (13.2 to 13.8), and WOT seems also quite nice and pulls strongly with 13.3 to 12.6. So it seems the solution is to delay the moment the main circuit come into action. To do so, I installed a smaller pump jet (30 instead of 35), and it make it a bit better, but I'm still at about 11.2 at transition phase. I have heard that a smaller Air Correction jet would delay main circuit action (which seems weird as I expected the opposite...).
Does anybody have a magic trick to delay Main Circuit action (other than closing progression holes as I'm quite reluctant messing with this). E.Tubes maybe... (BTW I drilled 2 2mm holes at the top of my F9 and it seems also a bit better)
thank you
After camshaft changed and many hours trying to set the weber DCOE right, I finally decided to stop the guess work and purchase a Wide-Band AFR meter. The good news: I was correct when i sensed that I was running too rich when Main Circuit come into action (AFR of 10.9 to 11.1). Idle circuit seems reasonably rich (13.2 to 13.8), and WOT seems also quite nice and pulls strongly with 13.3 to 12.6. So it seems the solution is to delay the moment the main circuit come into action. To do so, I installed a smaller pump jet (30 instead of 35), and it make it a bit better, but I'm still at about 11.2 at transition phase. I have heard that a smaller Air Correction jet would delay main circuit action (which seems weird as I expected the opposite...).
Does anybody have a magic trick to delay Main Circuit action (other than closing progression holes as I'm quite reluctant messing with this). E.Tubes maybe... (BTW I drilled 2 2mm holes at the top of my F9 and it seems also a bit better)
thank you