Z1OwnersClub GB

Recently bought new vance & hines, air filters & jets. Changed the exhaust...LOVELY...ran really well...next day changed the air filters from standard box to k&n's, the pilot jet from 15 to 17.5 and main jet from 102.5 to 110...now runs like a bag of old s**t seems like she's constantly choking....any ideas ????????????

Well im no expert ( theyll be along after me ) but when i got my A2 it had k&ns bigger jets and ran like a bag of crap got a standard airbox, filter and jets and it ran properly thats my expierience

The standard Kawasaki carbs are a pain to sort with pod filters (K&N's)
Try 115's....., best to start rich then reduce jet size

See told you an expert would be along after me

thanks for your experience mikey but gonna stick with it for the mo...and as for going up another 2 sizes...will that be enough pigford ???? I was thinking along these lines earlier today...loads more air going in need huge jets (boeing 747 springs to mind) or am i just talking shit again ????

Rule of thumb is a good 10% increase for hi-flow filters..... but every case is different

ok thanks for that will buy some 115's and 112.5's just in case....any recommendations as to a supplier that can deliver yesterday got the bristol & west coming up shit loads of work to do so very little time to play with the old girl...and the bike !!!!!!!!!

Hello Domz, I would guess at something around a 122.5 to 125 main jet size, pilots should not need to be bigger than 17.5, where are the needles set ? this will have a far greater effect on fueling than the main jets and costs nothing to try, Regards, Steve

hi steve thanks for the advice will certainly try 122.5's when i can find somewhere that actually sells main jets phoned z supplies yesterday and no joy.............in the meantime took out the float needle to alter the setting and found that it only has the '1' setting so a bit stumped at the mo !!!

domz wrote:hi steve thanks for the advice will certainly try 122.5's when i can find somewhere that actually sells main jets phoned z supplies yesterday and no joy.............in the meantime took out the float needle to alter the setting and found that it only has the '1' setting so a bit stumped at the mo !!!

Try here:

http://www.allensperformance.co.uk

http://www.allensperformance.co.uk/mikjets.html

http://www.allensperformance.co.uk/jetsizeconv.html

Steve Debben can supply you jets - I think!

Domz, I got a set you can have, gimme ur address mate

Steve doesn't mean float needle he means the needle that works in conjunction with the needle jet - the one in the centre of the slide.

that be the one with the circlip round it that I happened to call the wrong name...you'd be amazed at how much trouble that getz me into with the misses...ha ha !

Thanx to dark skies for the attachment