Re: '747 + 6 Cyl + Turbo?

["Shane Forster" <shane@nanosecond.com>]

I think I'm going to stick with the '747 for the short term goal, but for
long term I'm thinking from what I've read and heard that the port injection
setup would probably be better for turbocharging, or at least it's more
common and would therefore be easier, correct? And I would have a base
system to play with (Sy/Ty) or could go with the '730. But, I really haven't
read much on the matter of fabricating intake manifolds. I have a little 85
amp mig welder, but I don't think I'm capable of welding aluminum with it.
I've heard of a certain brazing alloy which is fairly strong and can be used
with aluminum, can't remember the name. What do you all think would be the
easiest way to fab an intake manifold? Drill holes in my stock cast Al
manifold and on injector bosses, or maybe make a steel creation (that I can
weld), I've also heard of using fiberglass? On the subject of injector
bosses and mounting, how do injectors typically mount on the manifold?
Sorry for all the basic questions, but I don't have much physical experience
with these systems. Thanx.

Shane Forster

----- Original Message -----
From: <chetwagner@uswest.net>
To: <gmecm@diy-efi.org>
Sent: Thursday, November 02, 2000 8:42 AM
Subject: Re: '747 + 6 Cyl + Turbo?


> You can also use a 730 for that matter.  I have been doing so for the
> last three months.
>
> On 2 Nov 2000, at 9:25, ECMnut@aol.com wrote:
>
> > If you ever get to the point where you can fab a port injection
> > setup, it sounds like you'll be a good match for the Syclone Typhoon
> > 4.3 ECM & cal.  They had a 4400rpm rev limiter from the factory,
> > and made 285hp, 350lb/ft stock.  The 1991 4.3 that they used was
> > an "all bottom end torque" engine, much like your 3.9.  Turning
> > the boost up a little can put an otherwise stock 3800lb Syclone in the
> > mid-high 12 sec range in the 1/4 mile.
> > The Syclone code has been totally disected.  The ECMs are a little
> > hard to come by, but they also came in '88 quad-4's and 87-90 turbo
> > sunbirds.
> > HTH's
> > Mike V
> >
> > >    1969 FJ40 Toyota Land Cruiser
> > >        Vehicle Weight: about 3800 lbw
> > >        Gearing: 4.11:1 diffs, 4 speed manual trans, 35" tires
> > >        Motor: F engine: straight 6 metric clone of stovebolt six of
Chevy
> > > fame, .030                     overbore, .030 shaved block/head
> > >                    around 3900 cc displacement, doesn't rev over 4000
RPM
> > >                    cast aluminum intake for 2bbl carb, steel tri-y
header
> > >    My current short-term goal is to simply install a throttle
body/'747
> > > system from a 4.3l GM truck or van. In the beginning I just want it to
work
> > > well enough to drive around daily. Question: Do you suppose
re-programming
> > of
> > > the ecm will be neccesary?
>
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