DIY_EFI Digest Saturday, October 16 1999 Volume 04 : Number 584 In this issue: RE: MEMS Re: DIY_EFI Digest V4 #583 Re: DIY_EFI Digest V4 #583 Re: DIY_EFI Digest V4 #583 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Sat, 16 Oct 1999 11:52:13 +0100 From: "Rich M" Subject: RE: MEMS Subject: RE: MEMS At 05:00 15/10/99 -0400, you wrote: >It is a stepper motor. But instead of an adjustable butterfly endstop. It >is a 'pintle valve' (what ever that is) Which is adjusted by a stepper. >The.valve is mounted to the manifold where it does the turn towards the >head. >It has a hose that goes from the valve up to the filter side of the >throttle body. That makes sense - like the earlier Lucas systems then.... >Ade ------------------------------ Date: Sat, 16 Oct 1999 09:43:50 -0400 From: Todd Israels Subject: Re: DIY_EFI Digest V4 #583 At 05:00 AM 10/16/99 -0400, you wrote: > >DIY_EFI Digest Saturday, October 16 1999 Volume 04 : Number 583 > > > > >Hello all...my name is Doug Dayson...I live in the San Francisco Bay Area in >CA...I'm a musician/audio engineer/producer and software engineer by trade... > >I'm currently researching converting my modified 71 Corvette Coupe to >EFI...mostly because I run around with a club of people with newer Vettes that are >injected and when we get into higher altitudes I can't compete w/o rejetting >(which is a hassle) so... > >The Vette weighs 3200lbs with a half a tank and no driver...it has a "stock short >rod" 406ci/375hp small block chev with TFS Aluminum Heads...Edlebrock >Performer Manifold and modified Q-Jet carb...1 5/8" X 3" headers...hyd flat >tappet cam timing is 218 @xxx.it currently >makes around 450 ft/lbs at 4000 rpm and 375 at 5000 rpm (all gross at the >crank)...BTW it's already been converted to HEI ignition... > The easyest conversion is a complete drivetrain swap from an EFI car, all parts are matched and work well toghther. You can get a VERY complete setup from some wreckers, but most are butchers and will damage or lose many parts. A very good source is buy a wreck off an insurence company before the wreckers get at it. If that does not work out for you and you want to keep your current engine I think a GM 454SS throttel boddy and GM truck ecm should provide the airflow needed and the ecm has been well hacked so it is not too difficult to tweek for your engine, anthough I expect the stock callibration will start and run fairly well It will not be a perfect calibration. The TBI uses less fuel pressure ans most if not all of your carb plumbing should be reuseable. If you are really lucky you will alredy have an in tank fuel pump that is the same body as a tbi pump so all that is needed is a pump change. There is a GM ECM list that may be of more help if you decide to try this setup. Best of luck Todd Israels ------------------------------ Date: Sat, 16 Oct 1999 11:48:10 -0400 (EDT) From: "Clive Apps Techno-Logicals 416 510 0020" Subject: Re: DIY_EFI Digest V4 #583 > From: nacelp@xxx.com (CSH-HQ) > Subject: Re: DIY_EFI Digest V4 #582 good to see you back in action Bruce when do you get out of the shop? > > Has anyine seen any four strokes other then the Mercedes v-6 sedan car using > an expansion chamber (s), like a 2 stroke. > Any thoughts on why this might really be worthwhile, or just a cosmetic > gimmick. Would have thought other teams would be working with it by now if > it made a hill of beans difference... it may allow for a more radical ex cam pattern without any torque loss Clive ------------------------------ Date: Sat, 16 Oct 1999 12:50:47 -0600 From: bearbvd@xxx.net (Greg Hermann) Subject: Re: DIY_EFI Digest V4 #583 >Date: Fri, 15 Oct 1999 14:44:16 -0700 >From: Doug Dayson >Subject: Intro and SB Chev Recommendations... > >Hello all...my name is Doug Dayson...I live in the San Francisco Bay Area in >CA...I'm a musician/audio engineer/producer and software engineer by trade... > >I'm currently researching converting my modified 71 Corvette Coupe to >EFI...mostly because I run around with a club of people with newer Vettes >that are >injected and when we get into higher altitudes I can't compete w/o rejetting >(which is a hassle) so... > Hi Doug-- Hopefully Tom Sharpe will chime in here, he has done a bunch of Chebbies. So has Carl Summers. My $.02-- Of the systems you have named, FP is far and away the class of the group. Another one in the same price/performance class is the Autronics unit (www.turbofast.com)--which uses the 68332 processor. One possible dealer for the FP unit is Jack Cotton, who can be found on the gnttype (Buick) list (www.gnttype.org). I think he sells them pretty reasonably. The wide band O2 option is WELL worth having--mebbe Gar will chime in here, there may be a diy WBO2 unit available through this list fairly soon. Do a word search on EGOR in the archives for some INTERESTING reading on this subject! As for the manifold--you might check out Force EFI besides the ones you mentioned. Regards, Greg ------------------------------ End of DIY_EFI Digest V4 #584 ***************************** 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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