749 conversion

[Jon Fedock]

    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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