DIY_EFI Digest V5 #56

Tue Feb 8 13:49:33 GMT 2000

What an AWFULL web page design!!! the backroud totally obscures the text.
----- Original Message -----
From: DIY_EFI Digest <DIY_EFI-Digest-Owner at diy-efi.org>
To: <DIY_EFI-Digest at lists.diy-efi.org>
Sent: Tuesday, February 08, 2000 8:00 AM
Subject: DIY_EFI Digest V5 #56


>
> DIY_EFI Digest        Tuesday, February 8 2000        Volume 05 : Number
056
>
>
>
> In this issue:
>
> RE: Measuring EGT on all cylinders?
> RE: DIY_EFI Digest V5 #55
> Test
> RE:  ECU7 PCB layout
> Re: Measuring EGT on all cylinders?
> Fuel Pressure with Holley Injectors
> sans cams
> [none]
>
> See the end of the digest for information on subscribing to the
> DIY_EFI or DIY_EFI-Digest mailing lists.
>
> ----------------------------------------------------------------------
>
> Date: Mon, 07 Feb 2000 05:01:10 -0800
> From: Carl Summers <InTech at writeme.com>
> Subject: RE: Measuring EGT on all cylinders?
>
> Hi Jorgen,
>    There is a company called Hereaus that makes a robust sensor although
it
> is not K-type if that is what your electronics are set up for...it is a
RTD
> device...I don't have their URL or phone number handy....Steve Gorkowski
on
> this list is very familiar with this product and I hope he jumps in and
> posts it...ttyl
> - -Carl Summers
>
> - -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Jörgen Karlsson
> Sent: Sunday, February 06, 2000 2:36 PM
> To: DIY_EFI Mailinglist
> Subject: Measuring EGT on all cylinders?
>
>
> Hi
> I am planning to run a EGT probe for every cylinder. The only experience I
> have with small fast probes near the ports is from a dragraced V8. The
> probes sometimes burnt up and left with the exhaust flow, not a problem
for
> them, their engine was not turbocharged, mine is... Can anyonne recommend
a
> good probe that is robust and fast.
>
> Jörgen Karlsson
> Gothenburg, Sweden.
>
>
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Mon, 7 Feb 2000 09:45:34 -0500
> From: "Flanagan, Stephen CECOM RDEC STCD"
<Flanagas at mail1.MONMOUTH.ARMY.MIL>
> Subject: RE: DIY_EFI Digest V5 #55
>
> Date: Sun, 6 Feb 2000 23:35:34 +0100
> From: =?iso-8859-1?Q?J=F6rgen_Karlsson?= <jurg at pp.sbbs.se>
> Subject: Measuring EGT on all cylinders?
>
> Hi
> I am planning to run a EGT probe for every cylinder. The only experience I
> have with small fast probes near the ports is from a dragraced V8. The
> probes sometimes burnt up and left with the exhaust flow, not a problem
for
> them, their engine was not turbocharged, mine is... Can anyonne recommend
a
> good probe that is robust and fast.
>
> Jorgen Karlsson
> Gothenburg, Sweden.
>
>
>
> - -
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> - ------------------------------
>
> Date: Sun, 6 Feb 2000 16:35:57 -0700
> From: bearbvd at cmn.net (Greg Hermann)
> Subject: Re: Measuring EGT on all cylinders?
>
> >Hi
> >I am planning to run a EGT probe for every cylinder. The only experience
I
> >have with small fast probes near the ports is from a dragraced V8. The
> >probes sometimes burnt up and left with the exhaust flow, not a problem
for
> >them, their engine was not turbocharged, mine is... Can anyonne recommend
a
> >good probe that is robust and fast.
> >
> >Jorgen Karlsson
> >Gothenburg, Sweden.
>
> Barry Grant Fuel Systems, Dalhonega, Georgia, USA
>
> Greg
> >
>  I have used the Corsa EGT sensors (they make the data recorder) on a 1600
> HP turbo (Ford 302) and have seen temps as high as 1850 F, only had one
> failure during the whole first season using
> them, and Corsa sent a replacement for free.
>
> Try www.corsa-inst.com
>
> good luck
>
> steve
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Mon, 07 Feb 2000 09:02:59 -0800
> From: garwillis at msn.com (Garfield Willis)
> Subject: Test
>
> traffic suddenly disappeared, so do I have a problem, or ...
>
> Gar
>
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Mon, 7 Feb 2000 10:02:46 -0800
> From: "Al Lipper" <alipper at cardozo.org>
> Subject: RE:  ECU7 PCB layout
>
> Dominic,
> You have some good questions.  First, the gerber files specify the width
of
> each trace and pad as an aperture.  This means that the outlines you are
> getting is a result of some setting in the gerber viewer you are using,
and
> not in the file itself (I tried the file with two other viewers and traces
> were filled).  Next, there are a number of errors on the PC board.  First,
> look at the new schematic for changes to the optoisolator circuits, fuel
> pump driver, stepper motor enable and the orientation of the DB-25
connector
> (P-2).  Next, there is an erroneous short between two traces going to the
> driver transistor for injector #1 (Q1, I believe).  This trace should be
> eliminated.  Next, on the CPU board, there is a problem with the RD and WR
> lines being connected together and run as a single trace to the support
> chips.  The schematic is correct, but OrCAD did something unusual when it
> created the netlist, so these were incorrectly indicated as a single
> circuit.  Also, the holes for the inter-board connector (P1) are slightly
> small.  Otherwise, the boards are overall correct.  BTW, all of the ground
> signals do get connected together at one point.  Also, I am using an 18"
> ribbon cable between the boards with no problem.  Over the next month or
so,
> we'll be revising them.  In the meantime, these corrections should take
care
> of most major issues.   BTW, I have a pair of them running relatively well
> at the moment.   Good luck.
>
>
> Al
>
>
> - -----Original Message-----
> From: Dominic Baker [mailto:dombaker at totalise.co.uk]
> Sent: Saturday, February 05, 2000 12:42 PM
> To: efi at cardozo.org
> Subject: Al Lipper ECU7
>
>
> Dear Al, I mailed u a couple of weeks ago about sending the ECU7 pcb
etching
> traces in an alternative format,  well that is no longer a problem  There
is
> a great Free Gerber viewer, with complete printing, saving and editing
> facilities on the Lavenir web site, the viewer is called "Viewmate6.1" if
> you want to pass that on to anyone else.
>
> Anyway I am ready to make the boards up at university, I had a word with
the
> head of electronics but unfortunately he is not prepaired to make up any
> number of these boards, but he will do a one off for me, I asked him
because
> I saw you were having trouble with the small batch prices.
>
> I have but a couple of problems,  One is that ECU7B(injector controller
> board) Top view the pads are fine, but the traces are double outlined
> instead of filled, the viewer I have cannot change this back, but I can
edit
> them by hand as there are not too many of them.  Before I do this, are
there
> any newer later updates to the schematics/PCB boards I should know about
> before I commit to these boards being made?  This board also has a problem
> around the fuse and the two relays, which is quite confusing.  Being as I
am
> redrawing the traces this is a grey area that needs clearing up.
>
> The other question I have is about the earths.  There are many of these
and
> several types eg, GND,DGND, ChassisGND etc.  I have all the drawings
> including the component overlay(silkscreen) on transparancy so I can look
> through the boards to trace the paths to check for any errors.  A lot of
the
> earths are clustered together with a track, but nothing joins these to the
> actual GND.  Do the two boards have to piggy back a short distance apart
> with pins joining the earths batween the two boards?
>     Or do all the GND's have to be connected to say a metal box which is
> earthed to the chassis?
> Or even Connect a wire between all like earths, then connect that to the
> chassis?
>
> I apologise for this long and teadious email but If I can clear these
small
> problems up then I can start making the ECU7 efi, straight away.
> Your help would be kindly appreaciated
> Yours hopefully Dom Baker
> Thanks
>
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Mon, 07 Feb 2000 13:25:39 +0000
> From: Ade + Lamb Chop <alaw at mrc.soton.ac.uk>
> Subject: Re: Measuring EGT on all cylinders?
>
> At 23:35 06/02/00 +0100, Jörgen Karlsson wrote:
> >Hi
> >I am planning to run a EGT probe for every cylinder. The only experience
I
> >have with small fast probes near the ports is from a dragraced V8. The
> >probes sometimes burnt up and left with the exhaust flow, not a problem
for
> >them, their engine was not turbocharged, mine is... Can anyonne recommend
a
> >good probe that is robust and fast.
>
> One of the thermocouple will do the job. They are available for all
> temperature ranges...
>
> Ade
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Mon, 7 Feb 2000 22:31:00 -0600
> From: "Shane Buss" <shaneb at ev1.net>
> Subject: Fuel Pressure with Holley Injectors
>
> I'm running very lean with 65# injectors on my holley 670cfm tbi unit...
> Im running about 16psi with the stock fuel pump...
>
> How high can i effectively turn up the pressure? I heard with the chrysler
> injectors holley uses above 17-20psi could cause problems...
>
> How high is the stock fuel pump good for also..
> Thanks,
> Shane
>
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Tue, 08 Feb 2000 01:00:24 -0800
> From: jefg at uswest.net
> Subject: sans cams
>
> I'm delurking to pass this on, I'm a bit behind on the
> digests so hopefully this isn't a repeat.  This has been
> around for a while, and is very intriguing.  Now, drive this
> will stepper motors and you can adjust just about all the
> cam variables (opening, durration, overlap) with your CPU on
> the fly.
>
> http://www.coatesengine.com/
>
> BTW, I've heard from various sources that this may be one of
> those deals where business management style may kill this
> idea even if the technical challenges do not.  You'll notice
> an overt lack of real detail.
>
>
> - --
> - -----------------------------------------------------------------------
> Jeff          jefg at uswest.com
> - -----------------------------------------------------------------------
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> Date: Tue, 08 Feb 2000 07:34:25 EST
> From: "Bill Hoffman" <vettebill at hotmail.com>
> Subject: [none]
>
> Did you ever find the information you were looking for on the 882 heads?
I
> have them on my Corvette and was trying to find the same information.  I
> would greatly appreciate it if you could share any information that you
> have.  Thanks,  Bill
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
>
> - ------------------------------------------------------------------------
----
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> ------------------------------
>
> End of DIY_EFI Digest V5 #56
> ****************************
>
> To subscribe to DIY_EFI-Digest, send the command:
>
>     subscribe diy_efi-digest
>
> in the body of a message to "Majordomo at lists.diy-efi.org".
>
> A non-digest (direct mail) version of this list is also available; to
> subscribe to that instead, replace "diy_efi-digest" in the command
>  above with "diy_efi".
>
>
>

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org