DIY_EFI Digest Thursday, 5 December 1996 Volume 01 : Number 371 In this issue: Re: Injector Connectors Re: Injector Connectors Re: injector duty cycles Re: injector duty cycles Re[2]: injector duty cycles Plugs for Autronic/Motec Re: Injector Connectors Re: Plugs for Autronic/Motec Re: Plugs for Autronic/Motec rev limiter? Re: DIYEFI FAQ Re: rev limiter? See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: "John Faubion" Date: Wed, 4 Dec 1996 16:20:16 -0600 Subject: Re: Injector Connectors > Vance.... broaden your junkyard search parameters.... *ANY* multiport > injected GM car will have the connectors you seek (Cavilers, Celebrities, > V6 Camaro's, V6 Fiero's, Grand Ams,... you get the picture) The connector > is a standard item (If I'm not mistaken, Ford and some imports use the same > connector too.) Curt in my scrounging I now have 4 different type of injector connectors and all of my parts have come from GM vehicles. If the injectors are of the same brand then you'll be pretty close. So far all of the ones using the lucas injectors have been the same. John Faubion jfaubion@xxx.net ------------------------------ From: "Curt Martin" Date: Wed, 4 Dec 1996 19:34:22 -0500 Subject: Re: Injector Connectors > Curt in my scrounging I now have 4 different type of injector connectors > and all of my parts have come from GM vehicles. If the injectors are of the > same brand then you'll be pretty close. So far all of the ones using the > lucas injectors have been the same. > > John Faubion Don't know what to tell ya John. Everyone I've ever ran across has been equiped with Delco injectors. The square 2-prong connector with a wire clip retainer. Curt Martin (cmartin@xxx.com) Ormond Beach, Florida http://www.america.com/~cmartin/ ------------------------------ From: Mazda Ebrahimi Date: Wed, 04 Dec 1996 20:22:56 -0500 Subject: Re: injector duty cycles > I find that at WOT my injectors go greater than 99% duty cycle for most of the > time. The ECM is a GM SFI unit (Buick Grand National). This high duty cycle is > common at WOT. The ECM does send out a token closing "blip" that keeps things in > true SFI mode; essentially the injectors are just serving as holes in the fuel > rail at WOT. > > Todd Todd_King@xxx.com Thanks for the info. Is this a stock engine? Are the injectors peak and hold type? ------------------------------ From: "William A. Sarkozy" Date: Wed, 04 Dec 1996 21:44:47 -0800 Subject: Re: injector duty cycles At 08:22 PM 12/4/96 -0500, you wrote: >> I find that at WOT my injectors go greater than 99% duty cycle for most of the >> time. The ECM is a GM SFI unit (Buick Grand National). This high duty cycle is >> common at WOT. The ECM does send out a token closing "blip" that keeps things in >> true SFI mode; essentially the injectors are just serving as holes in the fuel >> rail at WOT. >> >> Todd Todd_King@xxx.com > >Thanks for the info. Is this a stock engine? Are the injectors peak and hold type? > > I gather that at 2000 RPM with WOT you're pumping in the same amount of fuel as you are at 6000 RPM with WOT???? 100% duty cycle with (essentially) the same fuel rail pressure. Seems like we're going to run a little fat down low, boys. Help me out, here. Bill ------------------------------ From: dzorde@xxx.au Date: Thu, 05 Dec 96 11:27:42 Subject: Re[2]: injector duty cycles either that or a bit lean at the top end. ______________________________ Reply Separator _________________________________ Subject: Re: injector duty cycles Author: diy_efi@xxx.edu at INTERNET Date: 12/5/96 11:18 AM At 08:22 PM 12/4/96 -0500, you wrote: >> I find that at WOT my injectors go greater than 99% duty cycle for most of the >> time. The ECM is a GM SFI unit (Buick Grand National). This high duty cycle is >> common at WOT. The ECM does send out a token closing "blip" that keeps things in >> true SFI mode; essentially the injectors are just serving as holes in the fuel >> rail at WOT. >> >> Todd Todd_King@xxx.com > >Thanks for the info. Is this a stock engine? Are the injectors peak and hold type? > > I gather that at 2000 RPM with WOT you're pumping in the same amount of fuel as you are at 6000 RPM with WOT???? 100% duty cycle with (essentially) the same fuel rail pressure. Seems like we're going to run a little fat down low, boys. Help me out, here. Bill ------------------------------ From: Doug Robson Date: Thu, 05 Dec 1996 14:34:24 +1100 Subject: Plugs for Autronic/Motec does anyone know where to buy the 36 pin AMP plugs that the aautronicSMC and motec m4/8 use?? regards - -- |===============================================================| | When I die, | | I want to go in my sleep, like my grandfather, | | not screaming like the passengers in his car. | |---------------------------------------------------------------| | Doug Robson (H) mailto:doug@xxx.au | | (W) mailto:Doug.Robson@xxx.com | | Sydney, Australia http://www.cia.com.au/doug | |---------------------------------------------------------------| | Club Car Racing Register of NSW | Thank God | | 1992/93 Under 2 litre State Champion | for | | http://www.clubcars.org.au | Gravity | |===============================================================| ------------------------------ From: "John Faubion" Date: Wed, 4 Dec 1996 21:57:19 -0600 Subject: Re: Injector Connectors > Don't know what to tell ya John. Everyone I've ever ran across has been > equiped with Delco injectors. The square 2-prong connector with a wire > clip retainer. Yep I've got a few of the Delco types, two different types to fit Bosch, and the Lucas type. I was just noting that there are several different connectors. John Faubion jfaubion@xxx.net ------------------------------ From: dzorde@xxx.au Date: Thu, 05 Dec 96 12:53:03 Subject: Re: Plugs for Autronic/Motec A mate of mine has the same problem, I thought we could get them from AMP in OZ, but apparently they are only available from AMP in the US. Dan dzorde@xxx.au ______________________________ Reply Separator _________________________________ Subject: Plugs for Autronic/Motec Author: diy_efi@xxx.edu at INTERNET Date: 12/5/96 12:36 PM does anyone know where to buy the 36 pin AMP plugs that the aautronicSMC and motec m4/8 use?? regards - -- |===============================================================| | When I die, | | I want to go in my sleep, like my grandfather, | | not screaming like the passengers in his car. | |---------------------------------------------------------------| | Doug Robson (H) mailto:doug@xxx.au | | (W) mailto:Doug.Robson@xxx.com | | Sydney, Australia http://www.cia.com.au/doug | |---------------------------------------------------------------| | Club Car Racing Register of NSW | Thank God | | 1992/93 Under 2 litre State Champion | for | | http://www.clubcars.org.au | Gravity | |===============================================================| ------------------------------ From: Doug Robson Date: Thu, 05 Dec 1996 16:44:08 +1100 Subject: Re: Plugs for Autronic/Motec dzorde@xxx.au wrote: > > A mate of mine has the same problem, I thought we could get them from > AMP in OZ, but apparently they are only available from AMP in the US. > > Dan dzorde@xxx.au > > ______________________________ Reply Separator _________________________________ > Subject: Plugs for Autronic/Motec > Author: diy_efi@xxx.edu at INTERNET > Date: 12/5/96 12:36 PM > > does anyone know where to buy the 36 pin AMP plugs that the aautronicSMC > and motec m4/8 use?? > regards > -- > |===============================================================| > | When I die, | > | I want to go in my sleep, like my grandfather, | > | not screaming like the passengers in his car. | > |---------------------------------------------------------------| > | Doug Robson (H) mailto:doug@xxx.au | > | (W) mailto:Doug.Robson@xxx.com | > | Sydney, Australia http://www.cia.com.au/doug | > |---------------------------------------------------------------| > | Club Car Racing Register of NSW | Thank God | > | 1992/93 Under 2 litre State Champion | for | > | http://www.clubcars.org.au | Gravity | > |===============================================================| ANy one got the contact address - -- |===============================================================| | When I die, | | I want to go in my sleep, like my grandfather, | | not screaming like the passengers in his car. | |---------------------------------------------------------------| | Doug Robson (H) mailto:doug@xxx.au | | (W) mailto:Doug.Robson@xxx.com | | Sydney, Australia http://www.cia.com.au/doug | |---------------------------------------------------------------| | Club Car Racing Register of NSW | Thank God | | 1992/93 Under 2 litre State Champion | for | | http://www.clubcars.org.au | Gravity | |===============================================================| ------------------------------ From: "Frank/G.speed" Date: Thu, 5 Dec 1996 00:17:58 -0800 (PST) Subject: rev limiter? Can someone describe some common types of rev limiters common in use? I'd like to know how they work... - -- Frank M. Lin | G.speed - Z.Speed Trust HKS DC-Sports Razo/Carmate Soei fmlin@xxx.html EG2, 15.3 @xxx.info" u ssim I enirehtaC | Wanna try road racing with your car? http://am.net/nasa ------------------------------ From: "Frank/G.speed" Date: Thu, 5 Dec 1996 00:45:56 -0800 (PST) Subject: Re: DIYEFI FAQ The FAQ is a great idea, I have some free time at hand but I'm not qualified... Anyway, what is variable reluctance and VR Hall effect (what is a Hall effect sensor?!). - -- Frank M. Lin | G.speed - Z.Speed Trust HKS DC-Sports Razo/Carmate Soei fmlin@xxx.html EG2, 15.3 @xxx.info" u ssim I enirehtaC | Wanna try road racing with your car? http://am.net/nasa ------------------------------ From: M HILL Date: Thu, 5 Dec 1996 09:24:35 GMT0BST Subject: Re: rev limiter? > From: "Frank/G.speed" > Subject: rev limiter? > To: diy_efi@xxx.edu > Date sent: Thu, 5 Dec 1996 00:17:58 -0800 (PST) > Send reply to: diy_efi@xxx.edu > Can someone describe some common types of rev limiters common in > use? I'd like to know how they work... > > > -- > Frank M. Lin | G.speed - Z.Speed Trust HKS DC-Sports Razo/Carmate Soei > fmlin@xxx.html > EG2, 15.3 @xxx.info" > u ssim I enirehtaC | Wanna try road racing with your car? http://am.net/nasa The ways that I know of doing this are as follows: Changing ignition timing to reduce power output. Cutting ignition or fuelling to some cylinders. Increasing the number of cylinders cut until revs drop suitably. Cutting all ignition and or fuelling at certain revs. Not too brilliant as this is very abrupt. Not smooth like the above methods. Martin ------------------------------ End of DIY_EFI Digest V1 #371 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. 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".