dynojet kit for vfr400 nc30

[ziggy]

hi, i cant seem to find one on the internet so just wondering where i can get them from, thanks

[eastanglianbiker]

well as the dynojet company doesnt list a kit for your bike unless it has been deleted due to age you might not be able to find one

[Stu]

why do you want this specific kit?

its only a name

you need a bike set up on a dyno by an expert to have it running right you cant just sling a kit in and say its fine!

a decent tuner will get the same results from most make of parts you are only probably going to have needles adjusted and possibly bigger jets

dont believe the hype that a dynojet kit will give you the best out the bike its actually a decent tuner that will get the best out of it

[Fast Eddie]

The jets on the rvf400 are slightly bigger iirc so that could be a first step to tuning it.

[Stu]

The jets on the rvf400 are slightly bigger iirc so that could be a first step to tuning it.

 

you cant just put a bigger jet in a bike and expect it to be fine

needle hight has a lot of affect on the fuelling

you cant guess these things they have to be done right otherwise you are pissing in the wind

[Fast Eddie]

The jets on the rvf400 are slightly bigger iirc so that could be a first step to tuning it.

 

you cant just put a bigger jet in a bike and expect it to be fine

needle hight has a lot of affect on the fuelling

you cant guess these things they have to be done right otherwise you are pissing in the wind

That's why I said first step. I can't remember exactly what the differences are, but it should put the op on a possible path.

[Stu]

That's why I said first step. I can't remember exactly what the differences are, but it should put the op on a possible path.

 

sorry but I disagree you cant guess fuelling!

first of all the op would need to know what size jet is already in there then he would need to know what size he is putting in also it might not even need an uprated jet and it could be a needle issue

then after that you would need to check the air to fuel ratio which needs to be at 12.5 to 13.3:1 for max power on a bike

also if he gets it wrong and it runs lean it can burn a hole in a piston over time!

the first step is to get the bike on a dyno to see how it is fuelling and if its lean or rich or neither!

[Fast Eddie]

Sorry but i didn't mean 'just swap the jets you'll be fine' i was just trying to suggest another avenue to look down other than a dynojet kit. Another route to investigate, if the op or anyone else wants to do a half arsed job with out reading up then that's their bad.

[Stu]

Sorry but i didn't mean 'just swap the jets you'll be fine' i was just trying to suggest another avenue to look down other than a dynojet kit. Another route to investigate, if the op or anyone else wants to do a half arsed job with out reading up then that's their bad.

 

In that case then you don't need to get jets from other bikes as you can just go to a main stealer and get the jets for the correct bike at different sizes so no need to mix and match

[Fozzie]

Someone somewhere will have tuned one of these, the internet is your friend here so I'd go researching what others did... If you find someone who got a good setup then follow that and then get a Dyno done to make sure you did it properly and the bike isnt running too rich or lean

[Stu]

Someone somewhere will have tuned one of these, the internet is your friend here so I'd go researching what others did... If you find someone who got a good setup then follow that and then get a Dyno done to make sure you did it properly and the bike isnt running too rich or lean

 

It doesn't work like that I'm afraid

Each bike breathes differently so what's good for one can be bad for another as i said above you cant guess these things the first step it to get it on a dyno and see how it running then go from there

[ziggy]

thanks for your help