they are jugs from a rz350.
rz350
they have an electronic powervalve system. im not sure if the portwork is different or not.
there are some rz guys on here that will probably chime in later and help.
nitro circus is my favorite show by far! ive watched it since the old days on fuel tv. i like bully beatdown too. never watched the fantasy factory, but ill dvr it and check it out since everybody on here likes it.
i also watch bullrun religiously. :thumbsup:
no. hold the throttle wide open, kick it 100x if it takes it until you get the highest reading, and use a quality tester.
also, is the choke tube connected between carbs?
+7 on your timing is probably too much and 19cc domes aint helping matters much on pump gas. do you have acess to high octaine fuel or av gas?
if its detonating, you may hear a pinging or knocking noise and may see the spark plugs backing out.