karism

At the beginning of this month,i slowly started to convert my 12A to Efi.
I got a Series 5 13B Turbo Intake manifold last night.
I`ll be changing the flange on it,so that it fits on my 12A

So far:
The ECU is in,with the wiring.
The main fuel pump is halfway in,i`am waiting for some hose

Here is some pics of the manifold that i bought last night.It has 3x 45mm (1.77")throttles.
Pic 4 shows the injectors i`ll be using.There will be 6 in total ,4 of the Ecu,and 2 that will squirt 100% duty cycle when i go WOT.The 2 not working on the ECU will be fitted later.


karis

d0 Luck

very nice and innovative
but since you're sticking to your FB's 12a, would the injectors in the intake manifold actually be accurate in feeding fuel to the motor.. since it is shorter.

karism

Thanks you Sir!

Yip,believe it or not,the primary,and secondary ports line up perfectly!The mounting holes at the secondary ports just needs to be changed.

karism

Anyone have any tips that i shuold look out for?

karism

Dont even ask how i managed to do a double post. :-)

Siraniko

iTrader: (13)

dont forget that this going to a 12-A. You will do lots of grinding/welding to mate the TII intake to 12-A.

purple82

What porting are you going to have on the 12a? What injectors are you using? It's hard for me to believe you'll need 6 injectors and 2 of them running 100% duty cycle (which is really bad for accurate metering by the way).

deeman111

theres a place here in australia that makes an adaptor plate for series 4/5 manifolds to fit a 12a 4 port. only costs about $150AU.

yet another project i want to do, but dont have the money.

What computer are you using? and do you have a 12a map for it?

u going turbo or na for now?

-James

karism

wackyracer : I matched them up last night,and the ports were lining up allmost perfectly.Maybe 1 or 2 mm difference at most

purple82 :Its a Cheesport engine,with nice big ports.I`am using small cc injectors.The extra 2 will just be to keep the engine safe,and to help with the fueling when it goes past 8500 rpm.

This is just another crazy idea,to go with the crazy port style i use.The engine turned out well.We will have to see how the injection ends up..

Karis

karism

deeman111 : I`ll be using a ECU off a 4 cylinder Bus,which is still non programmable at this stage.Later on i will ad the EPROM that can be reprogrammed.

I`ll be staying NA ,i`am not into Turbo Rotaries.Besides,it has too much overlap,the turbo will have severe problems to spool,and my Rotorhousings are notched too much to make it reliable with a turbo.

Karis

Directfreak

iTrader: (2)

No to **** on your parade...But...

I can almost GUARANTEE that this setup will either Not Run, or Run like ****.

Cheesport/Drill port: I've posted this before, but here you go:

Also, 6 Injectors for a NORMALLY ASPIRATED engine is overkill.
Not to mention, this "100%" duty cycle" that you actually want to happen with them.
---------------------------------------------------

An ECU for a 4 Cyl Bus is not for a rotary.
--------------------------------------------------
Don't Re-invent the wheel. There's a reason street ports and bridgeports are commonly used - because they work.

Do a street-port, you'll enjoy it more.
--------------------------------------------------
There's also no reason to Rev "past 8500" either. You're just going to damage your engine. Reving past 8500 is for a full bridge, and PP engines only. - and they need lots of mods to do it safely.

Just my 02 cents.

Jeff20B

iTrader: (13)

Will the extra two injectors be wired to the TPS so when it's floored, they'll simply be switched on?

karism

Direct freak: Well, i`am sorry to burst your bubble,but i has been running extremely well for 1500 miles now.

Ok,you say 6 injectors are overkill? Well, i dont think it will be overkill.I`am using 200cc injectors.Thats why i`am going to use so many.It will be a budget experiment.

It doesnt matter what the ecu was made for.The injectors are located far enough from the intake ports,that it wont be critical when it fires.The ECU i use is a fuel only one,and gets its pulse from the negative side of the coil..

Dont re-invent the wheel?I personally dont think that there isnt anything wrong with trying new things.Maybe i just have more patience,and more initiative than the average street guy. As you recall,i asked alott of opinions about the drill ported engine.I got 95% negative feedback on it,so i went back to the drawing board.In the end i changed alott on how big i drilled the holes,and the location of the holes etc.Allso how much timing the exhaust ports had.I found that my initial idea for the exhaust ports werent 100% acurate,they had too much timing,and created a massive amount of overlap.So i changed the Rotor housings to a square ported,less timing design.

I dont keep it at 8500 the whole time,but i do however go past there every once in a while.The components were chosen according to this,and were matched

Seeing that you havent seen,nor heard ,nor felt the way my engine pulls.I dont think you can judge the way it was built or the way it performs.

You gave alott of negative feedback,but i welcome any input,negative or positive.

Thanks for your input.

Jeff20b: that is correct,it will be wired to a micro switch,that will be on the throttle shaft.Allthough not a tps,it will have a similar effect.

Karis

Ps Directfreak : No hard feelings!

Jeff20B

iTrader: (13)

I'm trying to learn all I can about the MegaSquirt (the normal version, which is fuel only). Which ECU did you use?

karism

I`am using the Digijet ECU. Its the VAG equivalent of the Bosch L-jet injection system.
The Digijet is just much less complicated that the L-jet.

Allthough it has the restriction of the AF meter,it has the ability to deliver the fuel very precisely

Here is some info that i came across.Maybe you have allready read it?

bill Shurvinton

FSCK I must update that sometime, as it has a few errors. I wrote that as I was fitting MS to my 13B. I have learned an awful lot since then, and there have been some code mods done by a few others to help with things like injector staging :-)

Someone nag me incessently on that.

karism

Wowweee!You wrote that?

You know your EFI facts quite well Sir!

bill Shurvinton

I'm still learning to be honest. Another 20 years and I should have most of the facts :-)

Bill

Bruceman

iTrader: (5)

Go for it dude!
I have tried a fuel injection system off an Audi 5000 on my 12A with success. The difference was night and day. Throttle response was incredible.
It is good to be different. We can't all afford a Haltech!

Bruceman

Directfreak

iTrader: (2)

None whatsoever. Did you break it in and run it with a carb first?
Because I don't know how you would be able to get 1500 miles on the fuel injected engine in 24 hours.

Let us know how it pans out, and please post pics. I am sure alot of people would love to switch over to EFI for cheap.

CODE BLUE 2

I just changed my setup from carbed to EFI/ECU on my 79 supercharger. The difference is like night and day. Much more power. The car hasnt been fine tuned yet, but will be on the 5th. Heres some of the mods that have been done to the car.
List of modifications:

Ported & Polished 4 port 13B with turbo housings
7 in Camden Supercharger and 3mm Apex Seals, from "Atkins Rotary"
LT8S Microtech (Engine Management System).
TWM 48mm Throddle Body
Microtech ignition
4 Boush coils
K & N air filter
Ultra Ign Wires (racing beat),
680 fuel injectors
Aeromotive 72psi Fuel Pump set at 45psi
Road race HDR
Full Racing beat exhaust
Low profile fan (flex a lite), and a 1986 clutched fan modified
Light weight steel alloy flywheel
Center force Duel friction racing clutch
Car lowered 2in with Racing beat lowering kit
Posi/Disc Brakes
Toki gas struts
Gas shocks
Custom braded oil lines
Custom steel marine fuel lines throughout system.
Neon all around car including inside, "Street Glow"
Boost, Oil, and Air pressure gauge installed
GT Grant steering wheel
Fog lights
Custom strut bar
Custom heat shield
Complete custom made "15x7" Panasport "4x110"mm wheels with low-profile Yokohama tires in 2+2 configuration
Three theft deterrent devices including garaged
Custom paint
Misc powder coated parts
And not to mention all the little things that wear such as new radiator, transmission, hoses, pulleys, heavy duty battery, steering wheel bearings, struts, blue tint windows etc.
Sound system consists of a clarion stereo system, 2 amps, clarion 6x9s, has two 12’ subwoofers that are pro audio, One farad for charging up the subs.
Interior of car has been replaced but soon to be customized.

Dyno Test:
Unknown at this time till Dyno tuned completed on August 5th.
1/4mile times: Unknown till August 20th.

Good luck with your setup....

Gregs

what exatly is the point in keeping the 12a and hacking up a EFI setup using 13b parts, the 13b is a bigger better motor, id just drop a s5 motor in, 160hp right there, after the trouble of the 12a efi u will prolly be making the same amount of power

GavinJuice

It's all about being unique. You already hace a ROTARY in your hands which is good enough, but some people like to push it to a new level. Which is sweet

Gregs

im done with these cars for a while, im trading my gsl-se for a 1990 chevy s-10 and im putting the 4 bolt 350 from my gmc truck into it, it should be a fun project, plus my best friend is doing the same thing so we are gonna do the projects together at his brothers shop

-greg

83gslRX-7

ok so if you were going to sell your car to send me my motor, how do you expect to send it to me now
?!!!!!