fuel injected lifan 140

[djbrooksy05]

fuel injected YX/lifan 140

ok im going to toss this out there and see what type of response i get

tell me im crazy,mad or to get lost if you wish

but i got to thinking last night when i was helping a member
on car forum with fuel only ecu that he is trying to set up

now i have a old wolf2d fuel only ecu that is sitting around doing nothing
and started to think about setting it up on my bike

now i dragged out all the info i have on it and well things are looking good

the ecu will run on 6v to 24v dc so thats good the bike can power that no problems
all the ecu needs to run is to hook to the coil to get a RPM pulse so it knows how
fast its all spinning

a inlet air temp sensor thats not going to be hard to mount

water temp sensor ??? dont know as yet what to do but at worst will stick
a resistor in there so it so the ecu thinks its at a optimum temp all the time.
or may be oil temp ??? need to look in to it a bit more


the only thing i can see being a big problem is finding a throttle body
of a suitable size with a suitable injector and a small efi fuel pump


i cant see any reason why i cant set the ecu up so it thinks it fuelling
a rotary engine and all would be good

like i said you would probably think im crazy or a dreamer
so if you wish to say so tell me.

but if you a any ideas or know something i did not think of
chuck that out there to

sorry for the long ass post and any bad spelling and grammar
but had to get it out
how sick dose it sound a fuel injected lifan 140

cheers
mick

 

[rosie]

oOoOoOOoooo
thats getting me excited
that would be so good having an efi pitty
imgane what they will sound like<3
hope this works out bro
sorry i cant help with any mechanical knowledge on a efi pitty motor

 

[thump*140]

mate i wouldnt call this dreaming, i'd call this thinking outside the box... most of the best ideas come from backsheds, not chinese sweatshops...
Only issue i can see, is going to the be the plastic fuel tank, and having an in-tank fuel pump... pressure regulation could be tricky as well, as the 140 wont use a lot of fuel, and wont need a lot of pressure...
keep us updated, i'd be interested to see how this lil project goes..

 

[1fifty1wheel]

i'd run the temp sensor on an oil line. Does the Wolf 2d use MAP or MAS for the fuel amount? Oxy sensor? TPS? IAC?
Does it allow for use on an engine of that size?

Throttle bodies really are a simple device but as mentioned finding one of a suitable size would be an effort.
An injector of a really small four cyl, say a suzuki handi or swift may be the go.
Most efi pumps will do the trick but is you can find an external you'd be best off for obvious reasons. Couple this with an adjustable regulator and your set. Sure any pump you get will be over kill but thats what the return line in an efi setup is for!!

I personally will say go for it and if you need any advice, give me a shout.
I'll be investing in a mill in the next few months so a small throttle body would be simple to build.

 

[rosie]

go injecters of a daihatsu mirra there only a 0.6ltr motor

 

[skruba]

if u had an external fuel pump would this count out havin the fuel tank pressure tested...
i dont know but can u get an external fuel pump that u can manualy set fuel pressure...
big bikes can be fuel injected so i wouldnt say it is an unachievable task.

 

[djbrooksy05]

i'd run the temp sensor on an oil line. Does the Wolf 2d use MAP or MAS for the fuel amount? Oxy sensor? TPS? IAC?
Does it allow for use on an engine of that size?

Throttle bodies really are a simple device but as mentioned finding one of a suitable size would be an effort.
An injector of a really small four cyl, say a suzuki handi or swift may be the go.
Most efi pumps will do the trick but is you can find an external you'd be best off for obvious reasons. Couple this with an adjustable regulator and your set. Sure any pump you get will be over kill but thats what the return line in an efi setup is for!!

I personally will say go for it and if you need any advice, give me a shout.
I'll be investing in a mill in the next few months so a small throttle body would be simple to build.

its runs a map sensor and a TPS for fuel there is a few options as to what it dose with what

no o2 or IAC but there is a lot of adjustments for cold start
so lest hope the IAC is not needed
o2 is not that big of a deal if it works out i will get myself a cheap
wide band logger lol

i was thinking about the water sensor and well if i can a sensor
the same range of resistance from cold to hot oil
as what the ecu is looking for then all should be good there

the efi pump i have a vn crappydore wags in tank pump here that is lucky to be
14cm long and 5cm round so even if i have to make a surge tank
that the pump just fits in
then it can gravity feed from the main tank and all returns
and crap can be plumbed as the should

a custom TB is looking like the way to go is going to cost more but and money
is the one thing this idea is lacking a lot of
a pressure reg and a injector with suitable flow im still looking for
i know a few blokes that are good with that type of thing that are seeing what the can find

so this may not happen overnight but there dont seem to be much stopping it from
it being doable

someone eles that i was chatting to about it said i should do this

the ecu will take the boost but i think that could be going a bit far

 

[themountain]

YouTube - Monkey mit Einspritzanlage

I was hoping Lifan already came up with something like that, but no....

 

[skruba]

ahh thats a f**k off snail eatin your motor lol

 

[djbrooksy05]

note this is now me just pipe dreaming

that boosted bike
then stick the EFI on it
a good tune


then go set a mini bike land speed recorded

anyone want to sponsor me

 

[Dabomb]

a mob in japan make a kit for small single cylinder engines...will set u back 4000 AUS.

ive got this bad boy sitting around waiting, for when china starts making them:

 

[djbrooksy05]

that will be off tap

but then add the ride-ability and tune-ability of the EFI
for on and off boost and that would be crazy

 

[wogtaz ryder]

I will sponser you . A few dollers , will that do?

 

[rosie]

could possibly chuck in $2.50 to see that happen

 

[mattbombers]

il chuck in a few bucks...

 

[tormentandglory]

You'll have to run a big battery and charge it externally, fuel injectors draw a lot of current, so do high pressure pumps. Pitty charge circuits are pissweak. Ring around the wreckers and see if anyone is wrecking cbr125's yet. They're efi, very cheap and learners are crashing them all over the place. You should be able to get everything you need off one of those.
I've also seen a special efi manifold and throttle body for z50's made by over racing. I had a pic of it in a catalogue I used to have... Get your wallet ready for a raping if you want to buy one of those.
Good luck with the project, its always good to see someone having a go at something cool!

 

[tormentandglory]

Or another option for a throttle body... Use an old carb, take off the fuel bowl, cut off all the float mounts, jet mounts and other bits that you no longer need. You could even trim around the body so all you have left is the slide assembly. Then just plug all the holes and you have a nice slide type throttle body.

 

[djbrooksy05]

dam bike wreckers is closed till the 4th


what is the output of the charge circuit of one of these things

and what limits it is the regulator or the coils windings in the stator
holding it back

i hope its the reg holding it back cause i could find a reg to fix that problem

 

[Dabomb]

dam bike wreckers is closed till the 4th


what is the output of the charge circuit of one of these things

and what limits it is the regulator or the coils windings in the stator
holding it back

i hope its the reg holding it back cause i could find a reg to fix that problem

yeah i was thinking about putting a bigger reg or even 2 regulators working in parallel to achieve more current!

 

[tormentandglory]

Nah its the pissy magnets and lame windings. I'm using outer rotor kits which probably doesn't help. You'll be lucky to get 30watts when its running flat out. I've had trouble with this on my rego'ed z50's. Have to keep the revs up or you get caught with a flat battery, and I'm only running basic lighting, nothing fancy.