G'day All,
I'm sure this topic has surfaced many times, I've recently fitted a new 389 carby
& bike is now running a tad rich. I was previously running a fairly worn out 276
with B7ES plugs, & they were keeping a good colour. When I first fitted the 389
I had the 420 main, it wouldn't run on the 7's so I fitted B6ES, seems to run fine
but plugs are now black again, (using 98% oct. fuel). So I knocked the main down
to a 250 a bit of an improvement, (also needle on 1 ).
Was thinking about fitting irridiums BR6EIX, has any one tried these, they seem
a bit hard to get, will have to order them, thought I'd just check what you guys
were using etc.
regards, Cus