Which TBI system to use?

[Orin Harding]

Peter,
I've tried both Ford and GM throttle bodies on my MGB EFI project and while 
both work ok I like the Ford one because of it's "packaging".  It was easier 
to mount, connect air filter ducting to, etc.  The GM one is like an old carb. 
with an injector stuck in it.  When selecting one forget about engine 
displacement, think about the HP you assume your engine will produce with EFI. 
 Find an engine that produces about the same HP and use that throttle body.  
As an example, the MGB's engine is 1.8L and I'm using a throttle body off a 
2.5L engine.  The Ford 2.5L only produced about 88 HP and the MGB can produce 
100+.  I've been able to use the smaller injector by increasing the fuel 
pressure from the factory 15.5 PSIG to 20 PSIG.  Not the best solution but it 
works.  Good luck..Orin
 

----------
From: 	owner-diy_efi at coulomb.eng.ohio-state.edu on behalf of Peter Orban
Sent: 	Thursday, October 10, 1996 3:50 PM
To: 	diy_efi at coulomb.eng.ohio-state.edu
Subject: 	Which TBI system to use?

> From: cloud at hagar.ph.utexas.edu (tom cloud)
> Date: Wed, 9 Oct 1996 07:49:21 -0500
> Subject: Re: Using pc parts
>
...
>
> That's why, in another post on a diff. thread (I think), I asked for
> discussion about modifying OEM EFI controllers.  Seems like that may
> be the most efficient, quickest, satisfying way to go.


I am also thinking about putting an EFI system on one of my older cars. It is 
a
carburated Renault 18. I would think that a TBI system would be the easiest to
adapt (for port injection I would need the hemi head from an 18i). I am also
more familiar with Motorola microcontrollers. So what car should I scavenge at
a junk yard, with about same size engine (1.7L), TBI, and Motorola based
controller?

Thanks, Peter

-- 
--
Peter E. Orban
National Research Council of Canada
e-mail: peter.orban at nrc.ca