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mid range adjust on the SI carb

Posted: Tue Nov 30, 2010 5:47 pm
by guygrrr
greeting lads!

i've got a p125 here with a ported lml 150 cylinder (fresh bore), 24/24g, and a prima exhaust which is a jl lefty copy. around town the bike pulls well and starts easily. but when taking it out for a jaunt i soft seized @ 45mph in fourth. hmmm.

the stack is a 150- be4- 125. the question is which is richer, be5 or be3? thinking of going down to a 140 air corrector too.

thanks!

Re: mid range adjust on the SI carb

Posted: Tue Nov 30, 2010 9:28 pm
by H,POOL GADGE
taken from beedspeed....There is no particular rating for richer or weaker but as a guide: BE4 is the weakest, BE5 is richer than the 4, BE6 is slightly richer than the 5 and BE3 is the richest. change one thing at a time and plug chop gadge!!!

Re: mid range adjust on the SI carb

Posted: Fri Dec 03, 2010 12:47 am
by guygrrr
cheers for that. I went with the be3 and it still goes like a scalded cat so all good!