Hi all ....

Pls let me know the setting of the main jet ( saiz ) for vfr400 nc30.For the best performance.thanx a lot.

To get jetting spot on needs a dyno run.

THat said if you post up what mods are done to your bike there is enough peopel who have messed with these bikes a fair bit that somone will be able to give you a pretty good starting point.

regards
jon

If you really want to get into it yourself and set it right, get a lambda sensor and run it on each header, not really that expensive either

it depends what model bike you have whether it is the r3k,r3l/n,or even uk model.

the k model runs 110f/110r jets
the l/n model runs 115f/118r jets
and uk models run 120f/122r jets

it also depends on what modifications you have on your bike,aftermarket exhaust etc.

but these are the standard sizes :D


william

very difficult question to answer this ,i have had the same jetting in two bikes with similar exhausts and they ride completely different,one pulls really well and strong the other runs out of puff at 11k changed the jetting and it runs all most as well as the other one now

you could get a base setting (which is what wullvfr has just given you) but you will probably have to tailor it to suit your bike and needs

what has been done to the bike out of interest ?

Hi all ....

my bike is M model .... so can I used for uk models run 120f/122r jets ?????

is yours a uk model?

m model should be uk so yours will and should have 120/122 main jets,if standard!!!!


william