- DR180 top end with 3rd port cut into casings
- 20/20 Spaco 20d carb, 140ac/BE3/118, the pilot jet 50-120, air filter removed.
- I have the BGM exhaust
- timed at 20-21 btdc
After switching out the ac from the 160 to the 140 on the BE3 I took the 118mj out and went about drilling out some unuseable main jets.
I drilled a 102mj to 136- 137 , result were the bike could barely get over 30 mph
I drilled a 100mj to a 125-126, better than the 136 by a long shot but still running rich and not leveling out on the throttle
I drilled a 75mj to a 122, better than the previous and was able to get back up to 40 mph
I drilled a 104mj to a 120, better and getting above 40 mph but definately not crisp , still a bit boggy
I put the 118mj back in and so much better , able to hit 45-50mph but still I don't think its quite there.
With the 118mj back in I felt it was running good enough to do a plug chop and take pics of the results. I put in a new plug and I ran it trying to stay off wot but still keeping a steady speed and in the main jet circuit, I was just under 50mph for about a mile before cutting it.
Just the feel of the running I think I can still go down a couple jets but you guys know much much better than I do.
What do you's think ?
Some other thought I had, seeing as I went from the 160ac down to the 140ac and was back where I started with the 118mj , from what I understand ( correct me please if not right) the smaller the number the less air meaning richer running. I'm still running with out an air filter as well so really the only thing that has changed is the air correction jet.
Regular plug chop
Nice and dry
When I got back home I pulled the plug again to see how it looked after riding at slower and more variety of speeds , looks a bit wet
from in town riding
just short of 50 miles on the speedo