Although I have placed an order for the second group buy on the Megasquirt
Fuel Injection System, I do not intend to put it on the TR6. I am going to
put it on my supercharged MR2 because my increased boost is a little
outside the stock fuel programming.
There are now off-the-shelf parts that make it a lot easier to fuel inject
a TR6. Use a triple weber intake manifold. Couple that with the TWM
throttle bodies that replace a weber carb with fuel injector bosses and
snap on fuel rail. You have to fabricate the fuel pressure regulator and
throttle cable. Plumbing in the air temp, water temp, oxygen temp, and
throttle position sensors should not be a big problem. The fuel pump and
plumbing also shouldn't be too bad. Ignition can remain stock until
something equally cheap comes up (supposedly in the works).
Until somebody fabricates a cheaper fuel injected intake manifold, the
intake will be the most expensive part. In my opinion too expensive for now.
I don't know if this guy is still selling anything but his manifold looks nice:
http://www.totaladvance.com/projects.htm
Perhaps something similar using steel or aluminum pipes welded together?
The history of the Megasquirt means that anyone who signs up for the
present group buy will probably get their kit in October or November.
Megasquirt is not a business, it is a group designing a DIY fuel injection
system. You can order a kit, but there is already at least one guy who has
built his own system from the plans publicly available on the web page.
http://www.bgsoflex.com/megasquirt.html
http://groups.yahoo.com/group/megasquirt/
Ed McGuirk
At 11:06 AM 6/20/2002 -0600, 6 Pack Digest wrote:
>Date: Wed, 19 Jun 2002 22:27:10 -0400
>From: "James Franks" <jimmble@adelphia.net>
>Subject: Re: Megasquirt EFI
>
> > I know of two listers, James Franks and Ed McGuirk, who are using this
> > system on their cars.
>
>Not exactly true yet........ in my case I'll be using the stock Ford EFI
>from the Turbocoupe I dismembered for my hotrod project. I don't recall
>if Ed is intending to inject his TR or not.
>
>I do, however, plan to fuel inject a stock TR6 with the Megasquirt for
>my next project after the hotrod.
>
>This is not a small undertaking. I have been studying this process for
>more than a year now, and even though I have a fair amount of tools and
>experience, it's gonna be a big job.
>
>You have to modify, as Tim pointed out, an intake with bungs to accept
>injectors, also adapt a properly sized throttle body with linkage, plumb
>in and wire sensors, construct a custom fuel rail to supply fuel to the
>injectors, modify the fuel tank, add relays, and install a high pressure
>fuel pump. An O2 sensor must be fitted to the exhaust downpipe. In
>addition, this setup does not at present include an ignition portion, so
>I'm investigating what to use there. After all of that comes the tuning
>phase, which can be a long, arduous process. I am putting together a WB
>O2 sensor to aid in tuning without a dyno. It can be inserted in place
>of the narrow band O2 sensor for tweaking the fuel-air mixture during
>WOT, and during transient phases of operation.
>
>There are probably some immediate benefits from using EFI. Idle,
>starting, and fuel economy coming immediately to mind. I believe the
>greatest gains would be achieved if the engine was modified with higher
>C/R, better cam, and better breathing head. At least, with a stock
>motor, injection cam, and EFI, I would expect what the factory got from
>it's injection system, but with better economy, and fewer mechanical
>bits.
>
>I have a vision of eventually putting together a 'kit' of hard parts
>that a person with a TR could use to convert their car to EFI. Then, a
>person of average skill could bolt on the kit pieces, and add their fuel
>controller of choice. (SDS, Megasquirt, Wolf, Electromotive, etc.)
>
>I'd also like to touch base with anyone going down the Megasquirted TR6
>path who would like to share info. Once we determine the VE tables for a
>stock car, it should be fairly close for any other TR6 in similar
>configuration. There's no sense in 2 or three guys learning the same
>hard lessons when we can learn from each other. Just to repeat, though,
>I am not presently doing a Megasquirt on a TR.
>
>Anyone can feel free to contact me off list at jimmble@adelphia.net to
>discuss this further.
>
>Jim
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