well goodie for you!!:03:
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I only had about 20 hrs of fine tuning in my dominator / Victor jr intake on a 540. Sucker would idle all day long and never foul a plug. The PITA is drilling air bleeds to JUST the right size. Had a few ooops, too big episodes but, in the end the carb was perfect. Idle, mid and WOT.
It just takes some serious time and lots of trial and error to get them right.
Not exactly but sort of. Originally I was up to 98 jets and the top end was still a little lean while mid range was rich. With the air bleed change, I was able to drop down to 92's and the top end and mid range were good.
Power valves add 6-8 jet sizes. Changing them changes when they open but not how much fuel they pass. At wide open throttle they all add 6-8 jet sizes and that wasn't enough. Btw, new Dominators come with removable air bleeds. You can change them just like jets.
OK so you left the power valves to open late to richen the top end ?
Zul taught my buddy a trick with that.... he drills the orfice in the metering block where the power valve goes!
Mid-range on this particular engine was perfect but needed a tad more up top (when PV opens) so he drilled it out larger and it was perfect!:driving:
I'm happy to say I have learned a lot of tricks from some of the best in the business over the years and apply them on my own!!
Same goes here.... something you donīt learn in the Universities...