MicroSquirt (MegaSquirt) can trigger off the standard point distributor or an electronic distributor. If doesn't need to know the cam position unless doing four injector sequentially. It can do four injectors with the standard point distributor in batch mode. Which isn't as good for emissions as sequential

PM set RC. JD, the Microsquirt should trigger off the electronic dissy. Maybe checkout the Microsquirt manual to be sure.

It wont need to know where number one cyl is if you use the rotor button and distributor cap.

OK all, I'm interested!
I have an idea based on all this. I have a manifold like the picture, and have fabricated a 'Plenum' out of steel which bolts on in place of the weber. If I bolt a throttle body onto that, and put 2 injectors into the manifold pointing at the head (as a side note I just found you can get screw in or weld in injector bosses online in steel or alloy. Who knew!). I guess I could do 4 but I am trying to keep this a little basic. Turbo manifold bolted on, plumbed to throttle body, 2 injectors and what I think would be a better than standard manifold we should be good.
Now, is it possible to run a standard electronic distributor if the injectors are just firing a pulse? Would it be able to trigger off the standard dizzy or does it need no 1?
I was in the process of buying a 1500 to do a bit of work to, but after following this I think the 1200 is staying, with a little help from forced induction.
Thoughts?
JD

Attach file:

---

  Screenshot_2016-03-22-21-03-13-1-1.jpg (138.73 KB)

did you end up with a spare throttle body setup by chance? im looking for an easy way to get my mustard car EFI quickly

If there's enough interest in manifolds I may have some time coming up where I can look at modelling it up and getting some quotes on different manufacturing methods. I have a few ideas.

Thanks for the pics DD, yes it will fit the early blocks. I'm not sure about LHD though. I should be able to work that out with some careful measuring.

Have you been able to determine if it will fit a 1200 Sedan/Coupe?

The early engines have more room after the motor mount. The newer engines have the mount 35 mm further back

Late 1200 block

Attach file:

---

  19179 early A12 block.jpg (28.21 KB)

edited:
Ive always been a believer in the round port head especially the M30
and H10 heads which is what I remember as the better chambered round ports.
If the manifolding say something like the Rowland manifold can be made
to fit it will suit the ex. mani sykine has offered for 450 which is
a very reasonable price considering the quality and time.
This is definitely with a good box a real competitor to later engines.

JD, the build thread is all still relevant. I just put the big injector in front of the compressor when I switched to E85 to help with its vaporization. I wouldn't put the injector there normally. If someone wants to use E85 I would say that port injection would be necessary, or at least highly recommended.

Regarding the Exhaust manifolds, I could do them but on these conditions... I would only do them the same as what's on this engine and to suit a RHD 1200 with Skyline turbos(T28 flange w drilled holes as studs are in the turbine housing). I then know they will fit without modification to the crankcase breather pipe or inlet manifold. There is also good access for a dump pipe as the turbo sits at a 15 degree angle. The waste gate actuator mount will have to be modified by the end user. The cost would be $450. Plus shipping. No discounts for higher numbers.
I'm sorry if you think this is expensive, but they take a long time to make.

I'm not sure it they will fit other turbos, LHD or datto 1000's..



Harry, just read your comment. I'm blown away too. With the cost of oval port heads being $300+ and harder to find. Its great to see good power can be made without them. I might make a better inlet manifold to suit the A12 head to see if it helps much.

You don't mess around! When you said big cam, you meant BIG cam! lol
Very interesting thread mate - great stuff!

Having played around with mild, low boost carby turbo A12s years ago, the basic setup's power is no surprise to me, but the bigger boost E85 numbers are mind boggling on a stock A12 small port head and that puny manifold! Unreal :)