The easiest thing to do is to get a Bosch LH-jetronic
(no ignition in this system) with 4 injectors (4-cyl)
and make or buy an inlet manifold with a single 2-2.5"
throttle body. Or just get the Bosch components
and buy an aftermarket control unit to run the
engine. There are systems that will use an oxygen
sensor to set up most of the fuel and timing maps.
Camshafts with long duration/overlap would need a
throttle for each cylinder. If twin Solex are replaced
the throttles should be slightly smaller size. Like
changing from 2x44 mm Solex to 40mm throttles.
While doing this on some 280Z engines the critical
duration was about 290 degrees depending on lobe
center angle, before the single throttle body manifold
had problems with rough running at highway speeds.
Nismo rally camshaft (296 degrees) was too much for
a single throttle body on the L28.
I have been working with Bosch FI since the D-jetronic
of the early 1970's. Carbs are "black art" to me. I also
find driveability and torque to be better with FI. However
the Solex type sound is difficult to beat.
Thomas
ian miller wrote:
> I have seen this particular EFI...truth is as his web page suggest it really
> isn't for performance applications. $100 is very cheap, however I think you
> will find all sorts of hidden cost till it is installed. Truth betold, the
> SU's probably work much better than any batch fire system. This website
> just goes to show that making your own ECU is not as much of a black art as
> some may think. I know several people who have built their own systems,
> even tuneable and sequential ones. It just takes a while to work all the
> bugs out of the logic.
>
> Ian
>
> >From: Daniel Neuman <dneuman@quark.sfsu.edu>
> >Reply-To: Daniel Neuman <dneuman@quark.sfsu.edu>
> >To: csp311@telia.com
> >CC: datsunmike@nyc.rr.com (datsunmike), andycost@att.net (Andy Cost),
> >datsun-roadsters@autox.team.net
> >Subject: cheap fuel injection
> >Date: Tue, 18 Jun 2002 11:29:13 -0700 (PDT)
> >
> >Hello All,
> > You really don't need to spend a million dollars to add fuel injection
> >to a car. These guys are selling a kit that you have to put toghether for
> >like $100 bucks.
> > http://www.bgsoflex.com/megasquirt.html
> >
> >They also have a active yahoo group that talks about it.
> >For lots of how-to's on how to add fuel injection to a car look here.
> >http://www.sdsefi.com/tech.html
> >they even tell you how to make the fuel injector bosses from scratch!
> >
> > Daniel 69 2000
> > Oakland CA
> >
> >/// datsun-roadsters@autox.team.net mailing list
> >/// Send admin requests to majordomo@autox.team.net or go to
> >/// http://www.team.net/cgi-bin/majorcool
> >/// Send list postings to datsun-roadsters@autox.team.net
> >
>
> _________________________________________________________________
> MSN Photos is the easiest way to share and print your photos:
> http://photos.msn.com/support/worldwide.aspx
>
> /// datsun-roadsters@autox.team.net mailing list
> /// Send admin requests to majordomo@autox.team.net or go to
> /// http://www.team.net/cgi-bin/majorcool
> /// Send list postings to datsun-roadsters@autox.team.net
/// datsun-roadsters@autox.team.net mailing list
|