NC30 FUEL INJECTION Question?

[SilverSurfer]

Hi V4 junkies ,haven't been posting in a while but i'm wondering if there is anyone who might have any ideas on converting a vfr 400 nc30 to Fuel injection and stuff like wiring diagrams that wouldn't interfere with the original CDI/igniter , any info would be appreciated ,

[bikemonkey]

Very very very very very expensive.

Have a look at this build thread to see the work: viewtopic.php?f=62&t=4014&start=80

And this one: viewtopic.php?f=62&t=1765&start=210

[scooble]

I think the usual answer you get on this forum is "why would you want to do that? you might as well buy a fuel injected bike"
I think the people you should ask would me the the MotoEng team who are running a tuned NC30 in the Bemsee F400 class.
Although they are still running carbs, I do know that they are doing research into EFI

[Morespeedvicar]

If you were going to the hassle of injection why not use the ecu to control ignition aswell then you could map ignition to match your new setup?
Dont really see the point unless you have a mega tuned engine and stupid big throttle bodies, be good to do from a good challenge point of view tho, even if it was just to see if you could get it to work!!!!
Have a look at mega squirt or micro squirt i dunno how far they've come on, not looked for years.
Cheers
Ian

[Neosophist]

I think the usual answer you get on this forum is "why would you want to do that? you might as well buy a fuel injected bike"
I think the people you should ask would me the the MotoEng team who are running a tuned NC30 in the Bemsee F400 class.
Although they are still running carbs, I do know that they are doing research into EFI

The usual answer is as the above because all the people that ask that question are 17 year olds who want a fi bike but think they can convert and nc30 cheaper or daydreamers who are just wasting peoples time.

That question is asked every so often and maybe 1 person actually converted their bike.

General rule of thumb is if you ask something so general as "how do I do fuel injection" you probably dont have the knowledge to do it.

Asking if anybody can recommend a place to get throttle bodies made for their custom setup will elicit a much more interested response from people.

I wont say its pointless right away but I do have a question to the OP.

What do you think will happen if you convert the bike to FI?

[SilverSurfer]

Acctualy i have got a FI bike but like playing around with nc30's have an old nc that i would like to convert ,something like this http://www.roadstercycle.com/yamaha_vma ... cv_car.htm doesn't seem to expensive , and my only issue is the wiring aspect and the management system to use ,have thought of using the vfr800's system , i have a lot of bike parts to play around with ( 10 years worth of parts ) and i mean it's not like if the 30 is FI it's going to take on 1000 cc bikes i just want to see if its going to make a diffrence power wise

[Neosophist]

Acctualy i have got a FI bike but like playing around with nc30's have an old nc that i would like to convert ,something like this http://www.roadstercycle.com/yamaha_vma ... cv_car.htm doesn't seem to expensive , and my only issue is the wiring aspect and the management system to use ,have thought of using the vfr800's system , i have a lot of bike parts to play around with ( 10 years worth of parts ) and i mean it's not like if the 30 is FI it's going to take on 1000 cc bikes i just want to see if its going to make a diffrence power wise

an FI NC30 wont make your bike produce any extra power at all over well setup carbs. Fuelling isnt limiting power at all on these bikes.

FI will just let you fine tune the fuel mixture at every RPM point giving optimal mixture. If your carbs are setup well your main jet will allready be delivering most power. Probably allow you to gas the throttle quicker too over CV carbs which are pressure related.

Also not that cheap? Halfway down the page the guy who sells that kit gives a complete breakdown, middle of the road estimate is 1500 usd, and thats without any dyno time to get fuelling setup (and yes it will need a lot of dyno runs with somebody who knows what they are doing)

By the time you have got that all setup youll be well over 2000 usd and thats using god knows what control system. Much more if you want good quality bits.

That carb hack conversion might not fit at all anyway depending on the size of the carbs.

If you have 2000 usd to throw at the bike and want more power theres actual things you can do to give it some more hp but without spending major money there isnt any hidden power.

They were built to make 59hp.

[scooble]

Even if I had the expertise to actually do a task such as this, I also believe its a good idea to also ask the question, just to find out how other people had done it and also find out what kind of problems they may have encountered and how they overcame them.
Cross fertilisation really isn't a bad thing sometimes

[Morespeedvicar]

I dont think its a wiring issue, theres soooo much maping to do to get a very good (better than the carbs) throttle responce, you'd prob need cam and crank position sensors, aswell as air temp and pressure and maybe fuel temp aswell, thats alot of things to map for and alot of expensive dyno time to do it. If you were been proper fancy you could map each sparkplug aswell.
I'd love to know how the factories do all this development, be interesting to learn and see the rigs they must use to do it!

[mruehl34]

The small v4 is running much better with the fuelinjection than with carbs. Tuning is very easy, but the costs are too much for a small tuning. I know for that money i can have an other bike but i want to ride the small v4. Look what Mike Norman do with the fuelinjection, stock engine nothing done with it, normal fuel and an race exhaust: 73hp on the back wheel. I think it is running much better than a tuned engine with carbs. The problem is to buy the bodies and the ecu whether motec or an other one. To make a loom is not so difficult and to go to the dyno isn´t expensive.
I like to ride the bike with fuelinjection and the midrange power is great. So if someone want to do it, in my opinion it is ok. I hope everybody understand my words, bad or worst english

Michael