DIY_EFI Digest Monday, October 18 1999 Volume 04 : Number 588 In this issue: Re: DIY_EFI Digest V4 #585 Re: DIY_EFI Digest V4 #587 efi for 71 vette Injector sizing Fuel Injector ID'ing? See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Mon, 18 Oct 1999 10:00:07 -0400 From: John_Calabrese@xxx.COM Subject: Re: DIY_EFI Digest V4 #585 Carl, I am interested, I might have to do this sometime soon with my 383 BB mopar. Thanks >>,you can >>buy an eprom burner and erasure cheap on ebay( http://www.ebay.com ) do a >>search under eprom....I will go into further detail on how to do this job if >>you are interested... ------------------------------ Date: Mon, 18 Oct 1999 10:13:10 EDT From: EFISYSTEMS@xxx.com Subject: Re: DIY_EFI Digest V4 #587 efi for 71 vette Hi, Right now I have a single blade large round TB originally off a First EFI system (equates to about 950 cfm by square area) but am thinking of getting one of the large single oval TPI type TB's from TPIS(1350 cfm).... - -Carl Summers In a message dated 10/18/99 2:24:24 AM Pacific Daylight Time, DIY_EFI-Digest-Owner@xxx.edu writes: << Date: Mon, 18 Oct 1999 01:00:54 -0700 From: "Mike" Subject: RE: EFI for 71 vette what kind of throtel body are you going to run? Im interested in doing a efi for a 454 im building. Right now im doing a 72 chevy p/u with a tpi. what kinda cars did th 7730 come in? mike > Date: Sat, 16 Oct 1999 19:39:08 -0700 > From: "Carl Summers" > Subject: EFI for 71 vette > > Hi Doug, > There are some really nice units out there but I still haven't seen > anything I like(under $5000.00) better than a GM computer for a daily > driver,,,it offers you closed loop for better gas mileage, spark knock > control and even checks for octane upon start up to just name a > few.....the > downside is without software to make the job easier you have to do a bunch > of work in hex once you locate the tables..(the breakdown of the 7730 is > completely available) Use any manifold you want, get the correct size > injectors(we can help with that) Use a Gm distibutor and > sensors,,,,you can > buy an eprom burner and erasure cheap on ebay( http://www.ebay.com ) do a > search under eprom....I will go into further detail on how to do > this job if > you are interested...I am currently doing a 68 camaro with a 396 multi > port(my own, basically a tunnel ram and a custom plenum) and am > even having > the GM 7730 control the fuel enrichment and spark table for the > nitrous(still working on that but close) This car should run 11's without > nitrous and 10's with(traction a factor)......ttyl > - -Carl Summers > p.s. you can do this very reasonable and have an awesome RELIABLE > system.....check the aftermarkets failure rate....then think again about > using a proven GM system...... > >> ------------------------------ Date: Mon, 18 Oct 1999 08:54:18 -0700 (PDT) From: Bob Moon Subject: Injector sizing > There are some really nice units out there but I still haven't seen > anything I like(under $5000.00) better than a GM computer for a daily > driver,,,it offers you closed loop for better gas mileage, spark knock > control and even checks for octane upon start up to just name a few.....the > downside is without software to make the job easier you have to do a bunch > of work in hex once you locate the tables..(the breakdown of the 7730 is > completely available) Use any manifold you want, get the correct size > injectors(we can help with that) Use a Gm distibutor and sensors,,,,you can > buy an eprom burner and erasure cheap on ebay( http://www.ebay.com ) do a > search under eprom....I will go into further detail on how to do this job if > you are interested...I am currently doing a 68 camaro with a 396 multi > port(my own, basically a tunnel ram and a custom plenum) and am even having > the GM 7730 control the fuel enrichment and spark table for the > nitrous(still working on that but close) This car should run 11's without > nitrous and 10's with(traction a factor)......ttyl > - -Carl Summers > p.s. you can do this very reasonable and have an awesome RELIABLE > system.....check the aftermarkets failure rate....then think again about > using a proven GM system...... Hmm. Speaking of correct injector sizing, how can I find the correct size for my Ninja 900? I was performing some calculations, and it appears the bike has airflow similar to that of an LT-1 or modified Mustang (72mm single-plate TB, 52mm dual-plate TB). Does that suggest that I would need the same size injectors? I know stock Mustang 5.0s have 19lb/hr injectors, and those using 70mm TBs typically have 24lb/hr squirters. Dunno what Corvettes and Camaros use. Also, any idea on how to set up an initial fuel map? I'm working out a system to use closed loop below 1/2 throttle and 6000 RPMs, then go to a mapped open loop above either entry test. However, I don't wish to kill the 900 immediately when I fire it up... I was thinking I could find the correct injector, then look up (somehow) the engineering specs for said injector, and perform some calculations to get the (hopefully) required PW for the given airflow. Thanks, Bob Moon '99 Dodge Durango - Brutus '92 Shadow 1100C - The Shadow '85 GPz900 - Phoenix - Test Bed '82 XL250R - Frankenstein '81 YZ125H - The Wiz __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com ------------------------------ Date: Mon, 18 Oct 1999 10:57:48 -0700 From: "The Holling's" Subject: Fuel Injector ID'ing? I came across some fuel injectors but the owner doesn't know much else about them other than a part # (17104487B). Can anyone decode who or what size these injectors are? thanks, - -Jesse ------------------------------ End of DIY_EFI Digest V4 #588 ***************************** 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".