EFI in spica manifold?

[rustbucket]

The question about injector choice should be posted to the Megasquirt board. Those guys have a lot of direct experience with making things work. And they share information freely.

[junglejustice]

Well, it works. We have a well-running car here! Ex-SPICA Alfetta GT 2000 - Group 2 in Seattle (www.group2inc.com - 206.378.0900) modified the standard SPICA manifold (already has 4 individual butterflies) and connectivity with the gas-pedal and standard method for induction, so it is a very cost-effective way to go!

As far as injectors, we have made any standard Bosch-types work as well as the Redline pieces, some Ford ones and Summit-Racing (again Bosch-types..)

We installed a GoTech Standard EFI fully-programmable stand-alone engine management system on it along with one of the pre-assembled custom-wiring harnesses that we get from them and a modified GTV 2000 starter with a Hal-sender in it!

So, now we have this car and the '74 GTV 2000 running the GoTech Pro on a set of Redline-Webber dual-double ITBs out there. We modified the crank-pulley with 60-2 teeth and have now had custom 60-2 pulleys made!

Next stop, an Alfetta 2000 Sedan with 4 TRUE INDIVIDUAL throttle-bodies - also from South Africa - running a GoTech Pro - again with the 60 minus 2 crank-angle sensor setup running on the GTV mentioned above!

The next combination would be a budget-set of 2-double ITBs (similar to the Redline-Webber units mentioned above) for one of the following cars:

4-Banger # 4 is already in the shop and well under-way. It is a first-year S2 Spider (that again will run some combination of the options mentioned above!)

4-Banger # 5 is also already in the shop; it is a ground-up restoration GTV 2000 and it too will run some combination of the components mentioned above!

[Tifosi]

Injector cross reference chart if it's of use.

While not using a SPICA manifold, I'm curently in the middle of an ITB swap onto an L-jet 2L.

TB's simular to those found here at TWM induction. (I obtained these from another board member who did not know the specific origin himself as they were on a spider he aquired)

For myself, I'm moving from stock 0-280-150-128 to larger 0-280-150-945 as thier flow rate is more in line with the expected performance gain/range (if you crunch the numbers available on some web sites, the stock injectors are actually too small flow rate wise for the stock engine to begin with)

[iachella]

I don't quite understand that last link. He's got those TWM throttle bodies, but has the Spica pump and injectors. It's still mechanical. What's the idea?

[Tifosi]

The purpose of the link was to show the attached
and

What someone does with them once they get them home is thier business. (though they are designed for use with EFI and a fuel rail, that doesn't mean someone couldn't make SPICA work with it)

[randyleepublic]

Dear Tifosi,

With all due respect for a fellow board member, I believe that you are a bit confused here. This thread is about adapting a spica manifold and spica throttle bodies for use with an electronic fuel delivery system like Go-tech or Megasquirt.

Anyway thanks for the injector info - that sort of thing is always useful.

Regards,

[Tifosi]

No problem, apparently I was a bit confused.

I saw the part about the spica manifold but missed the spica TB part.

[ss33xy]

hey guys,
i drive an alfa 156, iv had it for roughly a year and have been in and out of different mechanics about 8 times for the same problems. always sensors i also had another actuator put in is dis normal in an alfa 156 is it possible to find out were all of sensors are like through a diagram so i can fix these problems. can u please email me back my email is wassup_zac@hotmail.com thanx

[randyleepublic]

Hi Ss33xy,

This thread is about combining Spica mechanical FI manifold hardware with EFI injector and control hardware. Also this board is mostly Yanks and, unfortunately, we never had the pleasure of acquainting ourselves with the 156 since Alfa never imported it into the US.

My suggestion: post on this thread of this board: http://www.alfaowner.com/Forum/alfa-147-156-and-159/ Those guys can probably help you.

Luck,

[iachella]

Careful Randy. The thread is about the Spica Manifold, but the board has plenty of Australians, New Zealanders, and Europeans.

[randyleepublic]

Yes, the board does, and I am very grateful for their, (and everyone else's), presence. Still, what we don't have is a 156 forum, and alfaowner does - that is all I was trying to say.

[junglejustice]

FYI;

I was in Dallas this past week with Andrew Garcia to help fire up a Houston Spider owner's mid-'80's L-Jet car (well now an ex-LJet Spider), on a GoTech Pro - utilizing the stock manifold, throttle-body and injector bosses!

The GoTech Pro actuates the 9 degree variable cam-advance solenoid beautifully (via one of its optional outputs) at 1600 rpm and above and the 60-2 crank trigger, 164 crank-angle sensor and coil-packs are just the ticket!

[Philip Hehir]

I've done such a conversion for my Alfa Montreal. I retained the SPICA TB and put in some Bosch 35lb injectors. I used the OMEX OMEM550 Engine management system with a front mounted crank sensor and TPS.

Initially the plan was to place the injector in the same port as the original SPICA injectors with the utilisation of an adaptor. This seemed the most logical placement and the adaptor would enable if the need arose a fully reversible conversion. The Bosch injectors are as most people have mentioned much shorter and with the use of an adaptor only just enter the SPICA injector port. Because of concerns that the combination of the wider spray pattern of the Bosch injector and lack of airflow would cause “wetting” on the port wall which would not provide for good fuel atomization and pressure to get the car finished for the upcoming race season a snap decision was made to tap the idle inlets a little bigger and install the injectors on the throttle bodies instead.

This wasn’t the most elegant solution and it does clutter the engine bay, but time wasn’t available to source alternative injectors that would allow better placement into the original injector port. To date this location has proved successful for this engine so hasn’t required any further modification.

Also the TB have been bored out from the original 32mm at their narrowest point to 38'ish mm to take 1.5" butterflys. However this has proved too large and I've had one crack already.

So to tell you the truth I'm now looking at some 40mm after market TB's like Jenevey and TWM to go on my new more developed race engine... just not looking forward to the cost for 4 sets.

Regards
Phil.

[randyleepublic]

Gosh, that Montreal engine is a thing of beauty! But why the distributor?? Doesn't your EMS provide spark control? Racing regs?

From more knowledgeable sources than myself: the injector that pretty much plugs in to the stock Spica location is a Ford part. I can't find the email that has the part number. JJ?

[Philip Hehir]

Yep.... that dizzy sure is larger than planned.

The OMEM550 ECU is designed to run with a single coil on a 8 cylinder engine or single coil pack if used with 4 cylinder engine so is able to contol the ignition curve as per normal with most EMS.

The higher output of the MSD HVC 6600 ignition unit and 8250 coil setup did necessitate the need to go to a much larger cap with wider contact spacing as the alternative Nissan cap that was originally modified to replace the twin plane setup of the Marelli distributor was arcing internally due to the close proximity of the contacts.

Phil.