1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

curious bout Fi system for my car 12A

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Old Apr 8, 2003 | 10:00 PM
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curious bout Fi system for my car 12A

just curious.. would a Fuel Injection go into my car? i got a 12A carb'd, im just curious. thanks
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Old Apr 9, 2003 | 12:20 AM
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Yes, but everything availiable is very expensive.

Why do you want fuel injection? Why not go with an aftermarket carb?

Ryan
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Old Apr 9, 2003 | 12:32 AM
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yea man, carb is more fun and easier to tune!
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Old Apr 9, 2003 | 01:06 AM
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From what I have read, alot of the FI Rx7 people switch to a carb when they want performance. You should look into Weber, or the other few available carbs if you're looking for added fuel flow.

If you're only looking for an FI car.....it would probably be cheaper to find and buy a 84-85 GSL-SE, which is already FI from the factory.
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Old Apr 9, 2003 | 01:45 AM
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Get a GSL-SE intermediate housing or 'plate' and use the carb as an air valve. LOL! Hmm, maybe if you're crazy enough, it may actually work.
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Old Apr 9, 2003 | 08:54 AM
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Originally posted by Jeff20B
use the carb as an air valve
Is'nt that what the throttle is for?
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Old Apr 9, 2003 | 12:23 PM
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Yes, but he was asking about FI. He'd need to install a TPS on his air valve somewhere, or get one off an FI car along with the rest of the manifolding and just slot the holes or something.
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Old Apr 9, 2003 | 12:24 PM
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From: https://www2.mazda.com/en/100th/
Originally posted by Jeff20B
Get a GSL-SE intermediate housing or 'plate' and use the carb as an air valve. LOL! Hmm, maybe if you're crazy enough, it may actually work.
thats kinda what the 12a turbo looks like, thats a good idea

mike
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Old Apr 9, 2003 | 12:25 PM
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Woah, that was a quick post. It apeared right below mine when the page updated.
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Old Apr 9, 2003 | 12:34 PM
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For the intake setup couldn't you get the lower manifold from Racingbeat for a 12A and use the stock upper manifold off a GSL-SE, and all associated F.I. components.
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Old Apr 9, 2003 | 12:55 PM
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Yes! The RB Dellorto lower manifold would be very good to use here. Maybe you wouldn't even need the GSL-SE intermediate plate. You could install the the injectors on the lower manifold; that way, you could keep using the tall ports of a 12A instead of the smallish ones of the GSL-SE. That's what I'd do if I was doing this type of project. Good call!
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Old Apr 9, 2003 | 01:00 PM
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Oops, I replied to the wrong thread, sorry!

Last edited by nosajwrx-7; Apr 9, 2003 at 01:04 PM.
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Old Apr 9, 2003 | 01:33 PM
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this is getting interesting. i wanna know if this works. i'm stayin weber but i might get another rex to do this to.
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