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Discussion Starter #1 (Edited)
I have an 87 Spider Veloce, now stripped down to a body shell with wheels. All the engine, drivetrain, dash, interior, wiring, etc. has been removed. Most of it is pretty worn out, and the only thing I plan on putting back is the engine and drivetrain, somewhat modified.

My question is...if I plan on modifying this engine a good bit, do you recommend going with the Bosch FI setup that came on the car or I have a 77 parts car with a Spica head/intake that I could use to go with the dual Weber setup. I do not have the Bosch engine mgmt computer (behind the passenger seat) that came on the car, but I do have the wiring harness and all other FI parts. Cost is not really an issue, but performance and drivability is the primary concern.
 

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Depends all on what you want to do.

Doing and EFI conversion myself, there are a few drawbacks to the Bosch- first, if you use the stock computer, you are left with a rather low rev limiter- assuming you build an engine that is capable of safe 7500 rpm jaunts.

But you mention that you don't have the computer, so IF you did this, you would likely go with an aftermarket system. Which has some benefits (later).

The other significant drawback is that the throttle bore is a little small. Again, this can be fixed, by either adapting a GTV6 throttle, or having the stock on modified. We did the latter on the turbo car, which turned out VERY well. A guy in the Bay area did it for me, excellent work.

Now the benefits of efi- if you go aftermarket computer, with a decent sized throttle, the sky is the limit. IF we did a new turbo engine, I would probably use the intake VCT found on the later '80's spider engines, as it can be a significant benefit.

Webers are cool, but vs. a really good efi system, all they do better is sound wonderful.

OTOH, making a weber engine do close to the top EFI engine WILL cost you less money, and there are a huge number of people out there who know how to do it, and do it quite well.

Reading back on that, it does not appear that it was any help...

Eric
 

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Discussion Starter #3
Any information you can provide would be very helpful and appreciated. I've had a few Spiders over the years, but never had to do anything mechanically to them (lucky me). This 87 model is one I kept and it was pretty worn out and tired, so I got crazy one weekend and stripped the car completely down and decided to make it a one-off original and put it back more or less in a stripped-down race-carish early Duetto looking style.

So...any advice on what to do performance-wise would be welcome. I strongly like the idea of Webers, my primary concern with that is getting them properly adjusted and having a car that is reliably fast and easy to maintain. I just sold a 63 Corvette that I never could get the carb adjusted right on, so perhaps my fear is unjustified in this instance, but getting two carbs tuned correctly may be twice the challenge.

As I mentioned, I have a 77 Spider with a head and intake I could use. Is this the head setup to use for carbs vs. the 87?

We have no emissions laws or inspections in this state, so this car will pretty much be a street/race car. So if you had a clean sheet of paper what would you recommend I do? who are the experts who can help with this stuff?

Thanks for your help.
 

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Opinion....
If I had a clean sheet, I would do fuel injection. But then again, that is what I do for a living.

How much money can you spend??

Either way, this will help: http://www.techedge.com.au/vehicle/wbo2/default.htm

I've got one, and really like it, its almost as good as the lab quality ones that I also have.

For proper webers- you need a Euro intake manifold, which isn't a big deal, since they are on e-bay all the time. Tuning them isn't as hard as it seems- pay a specialist. Really. I did that with my SPICA, and have been happy. Or be really paitent, but the 2 will be the same when you are done- except for some of the fine tuning at idle.

For EFI, you can do Electromotive, Haltech... These are some really flexible units, and make driving quite easy. SPICA specialist Wes Ingram sells Electromotive stuff, he can hook you up with parts.

It's hard to really tell you what to do, both will work just fine. Webers might be easier to install and tune, but EFI will eventually run better, and has the potential of making more power w/o new jets and whatnot.

Eric
 
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