749 conversion from 730??

[chetwagner at uswest.net]

There really isn't much of a difference except that the 749 has two 
injector drivers whereas the 730 only has one.  This shouldn't be a 
problem depending on what type of injectors you are going to use.  
There are probably some other differences, but this is the main one 
I can think of

On 6 Oct 2000, at 5:08, Jeffrey Scott wrote:

> Is the a advantage of using 730 with 749 code?  Working on a FI project myself, was going to use 749 (I need a couple if anybody has some for sale) but maybe I am missing something with the 730/749 setup.
> 
> 
> ---
> Jeffrey Scott  
> JWS6367 at mailcity.com
> NWSTP founding member (1of2)
> ICQ #25436277
> 92 ty#1295  black/black 
> 67 Camaro
> 63 Nova
> http://www.geocities.com/baja/dunes/9423
> 
> 
> 
> 
> 
> 
> On Thu, 5 Oct 2000 21:10:03   
>  Jon Fedock wrote:
> >    Hey cool project! I been working on an ALMOST similar project. I am
> >using  a '730 running '749 code to run a twin (Chrysler) turboed Trans Am.
> >Small world :). Runs (well ran) like a champ with 10 lbs of boost till #6
> >piston failed. After it started smoking, boost increased to 15-17 psi even
> >with the waste gates open! My guess is that the unburned gas/air/oil mixture
> >going into the exhaust (plug would oil foul) produced ALOT of extra energy
> >for the turbo(s) while it was burning in the manifold. I guess thats what I
> >get for using a $100 junkyard motor as a test <evil laugh> motor. Upon
> >inspection, the motor had seen some serious RPMs before I got it (all 8
> >exhaust valves had hit!) as all of the pistons had cracked skirts (#6 was
> >broken off). I KNOW I didn't over rev it- I didn't have to go over 4500 to
> >do what I wanted to do :). Seems most drivers of new 'Vettes think I'm
> >number one ;) ;) ;). Go figure. Anyway, I'll be putting the motor back in
> >this weekend (new cast pistons). This whole project is to go fast cheap keep
> >that in mind if you look at the pictures. Most everything is from the
> >junkyard except gaskets and bearings. I also will be MORE than happy to help
> >others with any such projects if I am able. I am NOT an expert, just an
> >enthusiast havin' a little fun.
> >Jon Fedock
> >www.GeoCities.com/JonFedock/index.html
> >
> >----- Original Message -----
> >From: <chetwagner at uswest.net>
> >To: <gmecm at diy-efi.org>
> >Sent: Tuesday, October 03, 2000 7:13 PM
> >Subject: 749 conversion
> >
> >
> >> Well, I have finally finished the conversion I have been working on
> >> for about a year.  I have taken a 730, not a 749, with the syty code
> >> and converted it to work on a 79 Dodge Omni with the 1.7 litre
> >> engine.  Nice thing about this engine is that most, if not all of the
> >> parts, are interchangeable with VW's.  Even the cylinder head bolts
> >> right into place, no mods.  The only part that I had to make was the
> >> adapter plate to mount the TB from an 88 Sunbird turbo to the VW
> >> intake manifold(the same one from the cis engines).  To make a
> >> long story short, I set the computer to 1 bar, tweaked the injector
> >> constant to match the injectors (trial and error), messed up the VE
> >> tables beyond recognition, and went for a drive.  Let me just say
> >> this:  Oh Happy Days, it actually runs, and good at that.  If anyone
> >> has any questions, let me see if I can answer them.
> >> --------------------------------------------------------------------------
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> >
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> 
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