Im wondering if I can put a 13B injection system on my 12A . I like the drivability and idle of the EFI system and would think the flow would be adequate for the 12A but would this bolt up? Any one done a EFI conversion on a 12A that doesnt require a bunch of welding or a science degree to do?

 

you need to buid the 12a with the gsl-se center housing, to mount the injectors, and then you can buy the racing beat 12a lower intake and it will bolt right on

mike

 

won't just bolt up. the intermediate housing will need to be swapped b/c thats where the injectors are. need the se fuel system. figure out a way for the lower.........damn, maybe:

get the intermediate housing and use the lower 12A racing beat dellorto manifold. the uim with the throttle body and stuff should mount up. uhh thats enough from me. someone else chime in.

anything is possible. would be al ot of trouble though. why not just do a swap to the 13B. hell of a lot easier.

 

Although, you could make it work, you would probably be better off going with a 13B. It would probably be less work overall, depending if the engine needed a rebuild. And you would also get the power increase and a wider power band that the 13b provides.

Kent

 

I know some companies make fuel injected carberator kits- to put FI on old V8's to help fuel economy and driveability. Why couldn't you just use a FI carb kit on the 12a? They run on a simple closed loop with the oxy sensor and throttle. But they are pricey new.

 

i was kind of half-assed looking into a TBI setup with a megasquirt efi computer a couple weeks ago, just out of curiosity. it can be done. i can dig up some linkage to a custom 12a efi system, if anyone's interested.

and a guy i was talking to said he found a multiport setup using a megasquirt computer, he's gonna try'n dig up some linkage for me next time i i see him online.

 

Incorporating a 13B efi system into a 12A engine is possible. As the engine will have to be stripped down it would be logical to increase the ports at the same time.

You will need from a 13B 6 port the:-
-- centre housing with its injector bungs
- 2 injectors[550]cc or better still from a !2AT[800cc],
for a better performance make it 4 13B injectors
- throttle body
- fuel pump, filter, and lines
- fuel rail and regulator
- crank trigger
- ecu or better still an aftermarket one such as a haltech
- ignition coils

If you street port during the build you should have a reliable and economical engine producing about 180rwhp up from the 80rwhp of the stock12A.

 

I guess its impractical but just seemed like my 12A likes to rev harder than my 13B (but the SE is new to me and I am seeing low fuel pressure so Im replacing the pump tomorrow). I am just getting the SE into stock / upgraded with just a filter for now. It probably needs a rebuild to really wake it up. Or a turbo hehehe.. What about a megasquirt 12A turbo car?

 

I think this setup would be great you get the stouter engine due to the shorter length and the efi to boot. engine management would be improved and you could setup with 4 injectors and run a nice turbo on there.

hmm I may just have to do this myself.

Kyle

 

how exactly is this impractical by the way... if you think about it you could say any improvements to a 20 year old car is impractical but we keep on tweaking.

 

Its not impractical just an uneconomic way of increasing power by 7-10%. If you want to read a good description on how to do it go to www.hitman.hm/ported.htm . the cost would be about $3,000 plus the cost of rebuild and porting.

 

You can fit IDA style throttle-bodies with a custom rail & injectors using the same IDA manifold you would use for a Webber carby. This way, you don't need to rebuild the engine at all.

You then need a high-pressure fuel system, ECU to control it, and if you're feeling chirpy, a crank angle sensor for fully programmable ignition.

Then you need to ask yourself...is all this worth for an engine with stock ports that can reach its maximum flow with a modded stock carby. Spending 1000% more for 10% more power and maybe 20% more fuel economy doesn't really seem worthwhile.

 

go 13b its easier...

 

I've been kicking around this idea and I don't think you'll need the center housing at all.

The reason for putting a 13 EFI on a 12a is it would be cheap. I can pick up half a dozen GSL-SE's for under $500 each complete with burnt motors and beat up bodies.

What you need is the fuel management/ECU and iginition stuff all from the 13b. I would have to have a custom intake made to replace the 13b's. That's the hardest part. Now, take MSD for example, they sell everything to fit either a fuel rail injector system or a fuel line injector system to any manifold. They even sell the correct tapered drill bit to cut the recieving hole for the parts.

So, you replace the 13b's injectors/manifold with a new set of injectors and intake manifold. Add an O2 sensor (already installed one) and you should be done.

Anyone else think this may be a workable idea?