DIY_EFI Digest V4 #440

Fri Jul 30 11:11:20 GMT 1999

I am particularly interested in disassembling Bosch or Digifant ECU's. If
you have an EPROM reader I would appreciate copies of the Bosch EPROMS to
examine.

Does anyone know of a web site where I can download Bosch Eproms for
European Eproms e.g Motronic or Digifant ECU's. If not could anybody please
send me eprom dumps and I will create a site.

I am interested in writing tuning software for eventual free distribution
and user support but I need the eprom images, ECU circuit diagrams etc to
get the info first.

Does anyone have info about converting Bosch encoded chip types to the real
device numbers ?

All help, files appreciated.

Alan

-----Original Message-----
From: DIY_EFI Digest <DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu>
To: DIY_EFI-Digest at efi332.eng.ohio-state.edu
<DIY_EFI-Digest at efi332.eng.ohio-state.edu>
Date: 30 July 1999 11:10
Subject: DIY_EFI Digest V4 #440

>
>DIY_EFI Digest          Friday, July 30 1999          Volume 04 : Number
440
>
>
>
>In this issue:
>
> double flares
> Re: Supercharged carb set ups
> pinout/applications
> Re: FI Fuel Lines
> Re: carb s/c and Haltech temp sensor
> Re: pinout/applications
>
>See the end of the digest for information on subscribing to the
>DIY_EFI or DIY_EFI-Digest mailing lists.
>
>----------------------------------------------------------------------
>
>Date: Thu, 29 Jul 1999 15:15:03 -0500
>From: steve ravet <Steve.Ravet at arm.com>
>Subject: double flares
>
>> Date: Thu, 29 Jul 1999 09:10:32 -0400
>> From: Bill Shaw <bshaw at connix.com>
>> Subject: FI Fuel Lines
>>
>> Hi All,
>>
>> I'm in the process of plumbing the fuel system for my Fiat FI conversion.
I ran across a term in the
>> archives I'm not familiar with concerning making steel fuel lines:
double flare.  Can someone explain
>> what a double flare is and how to do it?
>>
>> Thanks in advance,
>>
>> Bill Shaw
>>
>> ------------------------------
>
>Double flare is when the metal is folded down into the flare.  Think of
>a single flare with a collar.  If you cut the tube down the length it
>would look like this:
>
>
>single flare
>  \
>   \_________
>    _________
>   /
>  /
>
>double flare
>
>  |\
>   \\_______
>     _______
>   //
>  |/
>
>The metal flares out, then doubles over inside the flare.  The tool is
>expensive, and it's fairly difficult to get right.  You create a
>"bubble" at the end of the line with "tool A", then cave it in to make
>the double flare with a regular flaring tool.  I've been buying
>pre-flared tubing at Napa, and bending it as necessary.
>
>- --steve
>
>- --
>Steve Ravet
>steve.ravet at arm.com
>Advanced Risc Machines, Inc.
>www.arm.com
>
>------------------------------
>
>Date: Thu, 29 Jul 1999 15:47:33 -0500
>From: "Robert W. Hughes" <rwhughe at ev1.net>
>Subject: Re: Supercharged carb set ups
>
>>         Just a mention.  Studebaker used blow through carbs on it's
>> supercharged V8s in the 50s and 60s.  The trick they used was to
>> builda pressure box around the whole carb, avoiding the problem of
>> reduced fuel flow by pressurizing the bowl to boost pressure.  The
metering
>> can then be kept consistant.
>>         They used a regular Carter AFB 4-bbl, no modifications other than
the
>> pressure box.
>
>Almost. If you look at the top of an ordinary mechanical fuel pump, you
>will see a small hole in the cover. This is the pressure reference for
>the pump. Studebaker added a line from here to the blower output so that
>fuel pressure rose with boost. In case of a ruptured diaphragm in the
>pump, this would cause the crankcase to be pumped full of gasoline.
>
>- --
>Robert W. Hughes (Bob)
>BackYard Engineering
>Houston, Texas
>rwhughe at ev1.net
>
>------------------------------
>
>Date: Fri, 30 Jul 1999 17:36:41 -0600
>From: cwagner at info2000.net
>Subject: pinout/applications
>
>I have 2 computers that are for a BOSCH KE-
>Jetronic system.  The numbers that I can find
>are 0-280-800-104(105)/811-906-264 and the other
>computer has 0-280-800-123/811-906-264-C.  I
>would like to know what cars they came out of
>and also pinouts/wiring schematics.
>
>------------------------------
>
>Date: Thu, 29 Jul 1999 20:03:04 -0400
>From: Shannen Durphey <shannen at grolen.com>
>Subject: Re: FI Fuel Lines
>
>Bill Shaw writes:
>>
>> Hi All,
>>
>> I'm in the process of plumbing the fuel system for my Fiat FI conversion.
I ran across a term in the
>> archives I'm not familiar with concerning making steel fuel lines:
double flare.  Can someone explain
>> what a double flare is and how to do it?
>>
>> Thanks in advance,
>>
>> Bill Shaw
>>
>> ------------------------------
>It's a two step process used to flare steel tubing for brake and fuel
>lines.  The first step "folds" the end of the tubing back towards
>itself, the second step finishes the "fold" and makes the actual
>flare.
>See here:
>http://www.chevelles.com/tools/tl4.html.
>Shannen
>
>------------------------------
>
>Date: Fri, 30 Jul 1999 08:33:04 +0800
>From: dzorde at erggroup.com
>Subject: Re: carb s/c and Haltech temp sensor
>
>> Have another favour to ask from a friean in the Fiat club.  Has anyone
found a
>> commercially available sensor that will replace the Haltech air temp
sensor.
>> This is the temp curve required:
>>
>> 100C -> 185 ohm
>>
>>This exactly matches the description of the GM MAT sensor and coolant
>temp sensor in my 87 Fiero shop manual.
>
>thanks to everyone that replied, it seems the match is a GM unit.  So far
it
>matches the 87 Fiero and 91 V6 syclone.
>
>>    Just a mention.  Studebaker used blow through carbs on it's
>>supercharged V8s in the 50s and 60s.  The trick they used was to
>>builda pressure box around the whole carb, avoiding the problem of
>>reduced fuel flow by pressurizing the bowl to boost pressure.  The
metering
>>can then be kept consistant.
>>    They used a regular Carter AFB 4-bbl, no modifications other than the
>>pressure box.
>>
>>    Bill
>
>Again thanks to everyone that have replied (too many to answer back
>individually), I can see I have a lot of work to do.
>>
>>
>>I'm in the process of plumbing the fuel system for my Fiat FI conversion.
I
>ran across a term in the
>>archives I'm not familiar with concerning making steel fuel lines:  double
>flare.  Can someone explain
>>what a double flare is and how to do it?
>>
>>Thanks in advance,
>>
>>Bill Shaw
>Good to see someone else working on a Fiat.  Double flare is making the
little
>lump on the end of the fuel line.  A normal flare gives you a funnel shaped
end,
>a double flare brings the flared out part back in again to produce a little
lump
>(or ring) around the pipe.
>
>------------------------------
>
>Date: Thu, 29 Jul 1999 18:43:30 -0700 (PDT)
>From: Orin Eman <orin at wolfenet.com>
>Subject: Re: pinout/applications
>
>> I have 2 computers that are for a BOSCH KE-
>> Jetronic system.  The numbers that I can find
>> are 0-280-800-104(105)/811-906-264 and the other
>
>Audi 4000, 1983 on.  This may be K-Jetronic,
>the database was unclear.
>
>> computer has 0-280-800-123/811-906-264-C.  I
>
>Audi 4000/80, 1983 on.  Seems like it was used on
>the KX, JT and JN engines.  This part is superceded
>by 811 906 264 D.
>
>You'd have to buy the Audi 4000 manuals.
>An expensive proposition.
>
>The above are a few applications that I saw with
>a quick look at an Audi parts database.  There are
>probably more.
>
>Orin.
>
>------------------------------
>
>End of DIY_EFI Digest V4 #440
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