[Diy_efi] Converting a commodore blue 6 cylinder to efi

[Geoff Harrison]

Why not grab a 808 from a VN or VP and harness. It's the same as 
the Camira, but the mapping
would be closer to your requirements.

I have seen the DFI system from the 3800 adapted to straight 6s. 
It looks like you have gone
too far with the blue 6 conversion - the 3800 is a much stronger 
engine. Look for a EV6 block.
A friend has planted one in a HT premier. Better fuel economy 
(not hard to beat the old 186 - 2 speed hydro on that) power and 
drivabilty.

If using an ECM from an auto on a manual transmission, be sure 
to ground the neutral
input to the ECM to keep the idle at 700 RPM. There are (or 
were) drawings on the GMECM site
that will help connecting the dis to the ECM.

I have VN manuals if you need drawings.

Geoff.

----- Original Message ----- 
From: "joe de abreu" <goslojo at yahoo.com.au>
To: <diy_efi at diy-efi.org>
Sent: Saturday, September 09, 2006 12:14 AM
Subject: [Diy_efi] Converting a commodore blue 6 cylinder to efi


I'm almost ready to convert my commodore blue 6 cylinder motor 
to efi, however not sure on a few things and need your help to 
get me started.

  Yeah I know, it's been done a thousand times before.  But no 
one has really explained (texts & forums) to me on how I go 
about telling the ecm that it's now a 6 cylinder, not a 4.

  My conversion hardware consists of a VK efi manifold, fuel 
rail, fuel pump, exhaust headers with O2 bung, VN throttle body 
with IAC, JE camira 808 ecm with wiring harness complete with 
all the sensors and ignition module.   And for simplicity I will 
be using the standard electronic dizzy with the weights locked.

  With the above, I hoping this will be enough to get my car 
going so that I can fine tune the ecm later by editing the 
camira's bin file with Tunerpro (bin editing) and WinALDL (slow 
160 data logging on the fly) software.

  However, I'm not sure as to what needs doing with the ignition 
side of things.  Is this going to be a hardware or software 
issue?
  I'm guesing the dizzy will dictate the firing order, thus not 
a function required by the ecm.  But, how do I tell the ecm that 
its a 6 cylinder so that it can perform ignition functions 
accordingly?  Or does the 6 cylinder dizzy reluctor in 
conjunction with the camira's ignition module perform this 
function on behalf of the ecm?

  Do I need to align the dizzy with any marks (eg timing) when 
installing the dizzy?

  Will the standard ecm injector drivers be sufficient enough to 
drive two additional injectors?

  And what needs doing in regards with VSS (if its required with 
the camira's ecm....can't remember)?

  If you can anticipate any other problems that I may encounter, 
please let me know.

  I'm aware there are costly software programs and kits out 
there that could make life easier, however, my project objective 
is to carry out the conversion on a shoestring budget for the 
sake of achievement.

  I will greatly appreciate any advice on the above subject 
matter, as I'm sure others will too.

  Kindest Regards,

  Joe  "goslojo"