Re: What model ECM is this ?

[Team ZR1 <teamzr1@teamzr1.com>]

Bruce, since this car is so custom in design and frankly so very few LT-5
engines modified this way
I am not to certain how easy it would be to replace all the design G.M and
Lotus put into this.
Being the car ran in 24 hour races, IMSA and SCCA circuits I have to assume
lots of weird
from the normal ZR-1.

My goal is just not for myself but due to the ZR-1 being a dirty word by G.M
marketing and the hype
on the C5 Corvette those of us with ZR-1s racing them have to learn how to
manage ourselves for we
sure cannot get any outside support. I talked to Delco about source code and
even with the ECM dead they say the
code is still kept in a safe and cannot give it out.

As to the 4 cams, I do not know, work was done deep within G.M and Lotus and
they are not talking.
Considering I ran 185 MPH ( over a 100 mile stretch of an open road race) with
a bad clutch,
I assume the engine can do over 200 MPH so some engine work surely had to have
been done.

John

Bruce Plecan wrote:

> Decision time in my book, then.  How much time do you want to put into
> this?.
> Might be way easier to go with a known ecm.
> If you/others have the time (and I mean lots of it) then you might get it
> all done.   I for one can't even read the code, and been working at just
> getting to that stage for a long time.
>   Might consider redoing harness for interior mounting of ecm, and use a
> common easy to find one, or even a under hood oem one.  Both the 1227730,
> and 1227727 (underhood) are already hac'd and available.  With some
> relatively cheap software you'd be up and running.  Thou you can't run any
> diagnostic stuff on it (on your existing one).   Maybe  gettting a Duty
> Cycle from just the injectors would help.  Then you should be rather easy
> able to find the timing table in what you do have.  With the timing, and
> some idea of fuel, you can get there from here.  Thou will be work.
>    How much cam does this thing have?.
> Grumpy