EFI in spica manifold? - Page 2

karmat · #16 (**permalink**) 04-13-2006, 11:10 AM

Yeah good point, Eric. Doesn't really matter unless you're running sequential anyway. Like I said... it's a nitpicky detail I was just pointing it out becuase I hadn't seen anyone mention it.

Karl

Auto Tecnica · #17 (**permalink**) 06-13-2006, 07:01 PM

I have modified a couple of the spica manifolds for injectors using injecors from a 3.9 land rover with a modified LR fuel rail and preasure regulator it is fairly easy. I am using Haltech started with F7 and now using a closed loop F10X. for ignition MSD 6A..
Has anyone else used the Haltech would like to talk with them. All of this is on a 79 spider with all of the extras.
ron

slyalfa · #18 (**permalink**) 06-13-2006, 10:29 PM

post some pics of it and the injector

junglejustice · #19 (**permalink**) 06-16-2006, 04:55 PM

It has been done and works very well. In fact; my engine builder in South Africa - Dawie de Villiers of Glenwood Motors fame - just did the same conversion on a customers Montreal SPICA setup running a fully-programmable stand-alone engine management EFI system from GoTech (also in SA...)

We are about to do the same conversion on an Alfetta sedan 2000 here at Group 2 in Seattle as well (as it has been done on other 4-bangers as well.)

We are simply going to keep the stock SPICA manifold, drill-out the holes for the mechanical system injectors, plug in some nice reconditioned 2.5 litre Milano/GTV6 12 valve injectors and go for it. The custom harness that I supply with the GoTech is plug and play and comes with quick-release Bosch/Alfa style connectors, a air-temp sensor on one of the harness tails to measure intake air temps, an air pressure sender already in the box with a vacuum hose plumed in there - ready to go and run MAP.

You can also add a TPS and even run both! 4-banger starting maps pre-loaded, manual, program CD to load the GoTech program on your laptop - everything ready to go.

On another car we have the TWM throttle-bodies and looks pretty good, but they are spendy. that car came with Redline-Webber software that we tried out and then swapped for the Megasquirt software. The bazooka vacuum-can is kind of awkward and the MS is NOT truly a timing an fuel system. the guys who did the build/install ADDED an ignition module.

The GoTech handles both fuel AND spark, can run MAP and TPS, is available in a full sequential system for those who want it (a bit overkill for the street in my opinion) can drive individual remote aftermarket coil-packs or run the stock single coil-fire direct.... For the price - 700 to 900 bucks it is the way to go in my opinion.

While GoTech also has a nice set of individual throttle bodies, the combination of the GoTech with simply the drilled-out SPICA manifold is the way to go for a budget option in my opinion.

mj1pate · #20 (**permalink**) 06-23-2006, 11:55 AM

help the rest of us out guys....there has obviously been some serious development in this venture. What is the advantage of EFIing a spica manifold? Is there a performance gain above changing over to a used L-jetronic system, or is it the scarcity of used L-jetronic pieces?

Thanks

Mike Pate

slyalfa · #21 (**permalink**) 06-23-2006, 12:01 PM

lest see the looks can be one. and ITB (Individual Throttle Bodies)

Auto Tecnica · #22 (**permalink**) 06-25-2006, 01:13 PM

Think about it this way.
you have a cobra with a to barrel carb, then you switch to a set up with one barrel or throttle body per cylinder which one will work better..

Or better still why on the old giulia spider did they have a two barrel solex and on the veloce they put on a pair of DCOE Webers. A more power, B looks cool, or C Weber needed the business.

Auto Tecnica · #23 (**permalink**) 06-25-2006, 01:17 PM

We are working on developing billet throttle bodies that will use the efi injectors. Of course these will have the same bolt pattern as the webers and can be used with any of the weber dcoe manifolds. Any one out there with $$$.. will keep you informed.

87Sprint · #24 (**permalink**) 06-25-2006, 09:49 PM

arent theyre allready plenty of these avail in the aftermarket.... im sure jenvey makes dcoe injection throttle bodies

**randyleepublic** · #25 (**permalink**) 08-30-2006, 12:29 PM

Quote:

Originally Posted by mj1pate

help the rest of us out guys....there has obviously been some serious development in this venture. What is the advantage of EFIing a spica manifold? Is there a performance gain above changing over to a used L-jetronic system, or is it the scarcity of used L-jetronic pieces?

Thanks

Mike Pate

turbolarespider · #26 (**permalink**) 08-30-2006, 02:00 PM

The first problem is finding a set that will fit- the Bosch ones in the 80's spiders are really fat, and would not get too far into the intake manfold.

I know we (F) sell some cars with injectors that are long an skinny, and I've often thought about using them on a project like this.

Also, the injector spec is somewhat a function of which control system you use. Say, if you use an Electromotive, they don't allow both injector drivers to be on at the same time, so 100% duty cycle is really 50%.

OTOH, I think most others do allow the drivers to be on at the same time.

I kind of bet you could use 25-30lb injectcors pretty easily, though.

Eric

Auto Tecnica · #27 (**permalink**) 08-31-2006, 09:30 AM

Find an ijector that is set up for an engine that is about 500cc per cylinder. I work on land rover and I used injectors from a 4.0 or 3.9 V8.. I am using a Haltech F10 .. With some machining these will work in the Spica. I make my own fuel rail with hold down. I also used a FP reg from the rover..
303.258.0500, I usually have modified Spica manifolds..

Little Italian · #28 (**permalink**) 09-08-2006, 07:59 AM

Quote:

Originally Posted by Auto Tecnica

We are working on developing billet throttle bodies that will use the efi injectors. Of course these will have the same bolt pattern as the webers and can be used with any of the weber dcoe manifolds. Any one out there with $$$.. will keep you informed.

AlfaGeorge · #29 (**permalink**) 10-13-2006, 07:45 AM

I am working on fitting a pair of throttle bodies from a nissan RB26DETT engine onto the spica manifold. These throttle bodies have 45mm throttle plates but do not have the fuel injector ports (hence using the spica mainifold with the port already there). I am designing plates to adapt the TBs since the bolt holes do not line up. These throttle bodies are relatively thin, allowing the use of long air horns.

adding the RB26DETT throttle bodies (to an already hot engine) + EFI-megasquirt + electronic iginition = killer engine - am I dreaming?

**randyleepublic** · #30 (**permalink**) 10-13-2006, 01:58 PM

Not dreaming - rather inspired I would say.

Now here is the $64K question. What fuel injectors to use with the spica mani? As I see it, the issue is that the standard bosch style injector is short, fat, and the spray axis is at about a 45 degree angle from the injector body axis. The original Spica injector was long, thin and the spray axis was co-linear with the injector body axis. I heard a rumor that some ford injs. are long and thin, (spray axis unk.) (part no. unk.) (model and year unk.) That's a lot of unknowns!

Hopefully you will find a good replacement for the Spica inj.

Re the throttle bodies: where sourced? price? Donor year and model?

Kudos for leading the vangaurd!