injection onto a 1300cc mini motor

[deaf_rattle]

OK.
crazy thought
would the 4age ecu be smart enough to cope with running a mini motor?

just been thinking about adapting an existing efi system onto the mini motor, with the possibility of adding a turbo later on.

i would think that the 4age ecu would make the engine run too rich, but with the turbo, that may be ok?

Other thought would be maybe using the injection stuff off a starlet, similar cc rating etc.

any thoughts or suggestions?

cheers

[CozmoNz]

think about it

4age ecu, designed for x cc injectors....

the af ratio will be X amount of air, mixed with X amount of injection

if you can get as much air into a 1300cc, as a 1600cc uses, and you use the same injectors, then id say yes

but i dont think thats easily possible haha.

then theres ignition, timing advance, everything else your forgetting.

so no...

i hear minis can be ported like theres no tomorrow... and stroked out too, people do wonderious things to minis! im sure theres someone remotly nearby that does wonderious things with minis

why not just swap a 4efte / b16a / 4age in cmonnnnnn

[Ae92typeX]

~90's on minis with the 'A+' motor already came injected...although mainly for emmissions. Ive read numerous articles with it being done- not often with the basic 5 port head though as it would be a hassle adapting it to be injected each cylinder. On the standard head you would probably mount 2 injectors per inlet I guess. I'll dig up some of the fi articles I have when I get some more time.
Never heard of toyota stuff being adapted to fit so it would be an interesting project. I guess, just thinking about all the extra sensors on a 4age ecu for example it could be done, but would be a biggie. Except for the experimental factor, it'd be much more worth putting a starlet turbo motor in. It fits, but its tight. 4age and box wont fit alas- to long...unless you go midmount- that would be cool! Vtec 1600's and afew 1800's are becomming more common, I guess that would be an ultimate package really. Back in the day they sold adaptor plates for cortina 2L lumps to fit to the mini box, that would be retro cool.
Going turbo would be good, but the standard internals wouldnt last long- both the era mini turbo and metro turbo lump are stronger than the standard unit in many ways. Pistons and crank at the very least would need swapping for some aftermarket units (which unfortunatly cost more than a jap parts usually)
As far as porting goes, depending on the head series, theres lots of room to do some work there. standards a good design for fuel atomisation, but not big power. stroking and such can get them up to mid 1400's safe'ish, but not under a boosted application (not if you want it to last)
Hmmm, thats all negative nearly...

what quite a few people are having success with is supercharging with the sc12. Been considering it myself a bit lately. Maybe after the aw11 project is done i'll re-project the mini...

[RedMist]

You have two problems. Firstly there is some basic miscomprehension in regards to FI. Imagine the most complex carb you can. Well over 100 jets for mains, another 4 or more for accl. What you are suggesting is that you take that very complex carb and plug it onto another engine with considerably less fuel requirements. You may be able to do something with sizing the injectors but even a majority of the jets will be out.
Now you are thinking closed loop should adjust most of that error out, but no, Closed loop is bounds limited to stop failure of an O2 sensor damaging an engine.
Secondly is those "interesting" simesed intake ports. This will fugg with your gas readings (as one cylinder will run lean and the others rich).

You could spend considerable time playing with fooling the ECU and injector sizing to attempt to make it work. However at best, you'll be running rich (and loosing clydesdales) throughout most of the map.

[Ae92typeX]

...Secondly is those "interesting" simesed intake ports...

nice word choice

oh, and heres an interesting site which discusses that issue a little...too bad really, he made such a nice job of it all as well:

http://www.planet.eon.net/~chichm/efi/efi.htm