DIY_EFI Digest Saturday, 4 May 1996 Volume 01 : Number 129 In this issue: Hi Guys KNOCK Information Re:opinions Re:opinions Re: L-jetronic info Re: KNOCK Information Re:opinions 286 toyota... See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Mark Pitts Date: Fri, 3 May 1996 13:11:09 +-100 Subject: Hi Guys Hi...=20 Firstly, sorry if I'm posting this in the wrong place... if so please = drop me a line. I've been working towards doing my own EFI system for some time now. My = project is just getting out of the nitty gritty of getting the micro = design finished, and is probably only a week or so away from being = etchable. The origional idea was an all singing and dancing solution for = a bolt on replacement for my cars (Triumph Spitfire 1500) twin (worn = out) SUs. My father has one with 2 45DCOE Webs on it, but that is a real = handfull in traffic, great on the open road tho'. I've spent the last 3 = years reading books on EFI, engines, fueling and so on, and now feel = suitably equipped to make my first mistakes.=20 My real quiz at the mo' is about EGOs, whats the cheapes/simplest? I = rather like the idea of the ones that act realy as a rich/lean switch, = with a fast response time, so I can 'hover' around the right area. Any = more info... this way please.=20 If any body has any info... or any body wants to know more about me or = the project, mail me at saxon@xxx. TTFN Mark Pitts. (No home page YET!) ------------------------------ From: "Chuck Thigpen" Date: Fri, 3 May 1996 11:43:35 +0000 Subject: KNOCK Information Can anyone give me the most up-to-date publications that address knock or detonation in some detail? I would like to find a publication that shows the results of different tests performed and describes it's limiting factors as well as compares differing fuels, differing combustion chamber designs, knock controllers etc. '90 300ZX 2+2 '84 300ZX '89 FZR 400 (racer) '92 CBR 600F2 (racer) ------------------------------ From: talltom Date: Fri, 3 May 1996 11:40:28 -0700 (PDT) Subject: Re:opinions - ------------------------------ > >From: WERNER_HAUSSMANN@xxx.com >Date: Thu, 2 May 1996 22:03:43 -0400 >Subject: Re: Opinions. > >Hello Jim > >I noticed you said you reverse Bosch boxes. Do you have any schematics, >parts locator, block diagrams etc for the L-Jetronics boxes? The car wiring >etc is available, I am looking for information inside the box (computer). > > > >I have an interest in these. They are analog boxes. Most Power guys, and V8 >guys sneer at them because they use the air meter (air flap) but they are >very easy to retrofit to existing carb engines and easy to get. Sounds like a good idea, but where do you get air doors that move 1500 cfm @xxx.5" or less? ------------------------------ From: Land Shark Date: Fri, 03 May 1996 13:51:20 -0600 Subject: Re:opinions At 11:40 AM 5/3/96 -0700, you wrote: >Sounds like a good idea, but where do you get air doors that move 1500 cfm >@xxx.5" or less? Well, I know of "flappers" that move around 1100 kg/hr (whats the conversion to cfm??) And hot film meters that run even higher ... Jim ------------------------------ From: WERNER_HAUSSMANN@xxx.com Date: Fri, 3 May 96 14:29:59 -0600 Subject: Re: L-jetronic info Thanks Joeri That was helpful. Werner ______________________________ Reply Separator _________________________________ Subject: L-jetronic info Author: Non-HP-owner-diy-efi (owner-diy_efi@xxx.edu) at HP-ColSprings,mimegw2 Date: 5/3/96 2:58 AM Werner, I am not sure if you have got an early or a late L-jetronic, but take a look at http://proffa.cc.tut.fi/~k124775/ which is the hompage of a Finish Alfa Romeo nut. He has done his part of research on the early L-jetronic. Joeri de Haas ------------------------------ From: pfenske@xxx.ca (peter paul fenske) Date: Fri, 03 May 1996 19:04:15 -0700 Subject: Re: KNOCK Information >Can anyone give me the most up-to-date publications that address >knock or detonation in some detail? I would like to find a > >From Peter Fenske >Try SAE publications at a university library. I seem to remember quite >a bit of work done in the early 1980s. These are usually on micro. >I do know a little bit but might not be of too much help. >GL from peter: pfenske@xxx.ca ------------------------------ From: dapiper@xxx.net (David Piper) Date: Fri, 03 May 1996 23:42:59 -0400 Subject: Re:opinions >At 11:40 AM 5/3/96 -0700, you wrote: > >>Sounds like a good idea, but where do you get air doors that move 1500 cfm >>@xxx.5" or less? > > Well, I know of "flappers" that move around 1100 kg/hr (whats the conversion > to cfm??) > > And hot film meters that run even higher ... > > Jim > > I have a Porsche air vane meter from a 300 HP 928 that flowed 550 cfm but had 26 inwc drop. Anyone want it? TurboDave Less Maintenance, More Performance. ------------------------------ From: Scott Davis Date: Fri, 3 May 1996 23:01:50 -0500 (CDT) Subject: 286 toyota... Hello all... My name is Scott Davis, I am an ME at the University of Illinois. My current project is using a 286 system to control as many functions on my car (1980 toyota corolla) as possible. This all started when I found a brand spankin new 286 12 MHz motherboard in the trash outside of a building being refirbished. Along with a few PC jr's from a bygone age, I salvaged what I could a nd made off for home. Immediately, I wanted to put a system in my car- which incidentally takes up quite a bit of my time. I started with trying to think of ways to use the processor to monitor the various temperatures and states of the different parts of the car. Then I posted a few articles to a few newsgroups and got the http:// for this group. After reading the article on a digital ignition and EFI conversion, I wanted to do the same. Wouldn't it be nice to have that kind of control over the car as it goes through its paces? But I have some questions for all of you... 1. How to make a 12v+ source into a clean set of +12v, -12v +5v and -5v power to run the unit 2. What kind of A/D converters I/O boards and the like to monitor anolog signals act upon that information (I have very little controller experience) 3. reliability.... What happens when the system goes down? Safegurads... Backups... 4. How to get the system discribed to adapt to a four cylendar car 5. any other ideas that you may have concerning the mounting of a full scale computing device in a vehicle. (and if it is not possible, why not?) Thanks in advance. I appreciate all of your input and look forward to hearing from you. Scott ssdavis1@xxx.edu 80 Corolla SR-5 http://www.cen.uiuc.edu/~ssdavis1 ______ / / / / / / | |_______ | \ |______________/ / \ / \ / \ / \ \_/ \_/ \_/ \_/ ------------------------------ End of DIY_EFI Digest V1 #129 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. 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