[Gmecm] RE: '727 mounting

[dozierhc at aol.com]

Robin....
 
I would try and mount this in a verticle position with the connector in the DOWN location, if at all possible.
My reasoning comes from experience in the automotive industry with underhood modules that the condenstaion and water collection will run down the wires and away from the connectors in this way.
The connctors may be water-tight, but only up to a point.  Water pressure can slowly intrude, as well as the seal around the periphery of the connector can detriorate, and this helps prevent water from migrating in under these conditions.
 
Additionally, I would use a little silicone dielectric grease on the connector rubber insulators to keep them soft and pliable.
 
BR,
 
Hank
 
*************************************
 
Date: Wed, 11 Apr 2007 08:13:07 -0700
From: "Mike Wilson" <mwilson at bwarch.com>
Subject: RE: [Gmecm] '727 mounting
To: <gmecm at diy-efi.org>
Message-ID: <000001c77c4b$e9026c30$1500010a at bwarch.com>
Content-Type: text/plain;   charset="US-ASCII"

Robin, my 91 Z/28 runs the 730 in the vertical position from the factory and
it is internally the same as the 727 with different connectors.

I don't believe there are any restrictions as to the position you can mount
the ECM as long as you can reach the connectors to unplug it from the
harness as I have seen GM mount the ECM's in many different orientations. 

The factory doesn't care about access to the cover but any way you can mount
the ECM with cover access should work without any problems. If dirt
collection on the connectors is a problem you could always turn the ECM in a
way that required you to take it loose from its mounting to access the cover
or figure out some way of sealing the connector cover panel from the
elements.

Hope this helps.

Mike

-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf
Of Robin Handley
Sent: Wednesday, April 11, 2007 2:33 AM
To: gmecm at diy-efi.org
Subject: [Gmecm] '727 mounting

Hello,

I have to move my '727 to make space for something else. It's currently 
mounted horizontally with the MEMCAL door on the top. (See: 
http://www.furyworld.fsnet.co.uk/Images/GMECM.jpg - apologies for the poor 
quality of this picture.)

Given the constraint of not modifying the loom, I have limited options about

where and at what orientation I can remount it.

Could somebody with experience of '727s in their original installations 
advise of whether vertical mounting is likely to cause any problems?

BR,

Robin 
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