DIY_EFI Digest Sunday, March 28 1999 Volume 04 : Number 197 In this issue: Re: EFI Intake Conversion (1 of 2) Re: EFI Intake Conversion (1 of 2) Re: MAF airflow numbers Re: EFI Intake Conversion (1 of 2) Re: EFI Intake Conversion (1 of 2) Re: Nitrous Re: Nitrous Have 165 / Need 747 Re: identifying a Chevy 350 block and Trans RE: Valve Overlap Re: diy flow bench EPROM Emulator Ford Injectors Re: Ford Injectors Re: Ford Injectors Data logger Re: EPROM Emulator See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Sat, 27 Mar 1999 08:10:34 -0800 From: rr Subject: Re: EFI Intake Conversion (1 of 2) Actually, if you saw the price, you may feel that it was necessary. MSD sells these also, along with a bunch of other efi stuff. BobR. James Weiler wrote: > > I made myself one of these but now realize that it was unecessary. I > used a 27/32 bit and had a friend with a lathe cut the tip down to 13 > mm. Then used a grinding wheel to put a proper edge on the cutting surface. > hope that made sense, > jw > > On Sat, 27 Mar 1999, DC Smith wrote: > > > Hey Guys, > > > > I saw a neat little drill bit at a Accell or something, truck at the > > Craftsman Nationals last summer. It was a stepped injector drill bit, > > for cutting injector holes in intakes. Can't give you any more info than > > that I saw one and know they exist. > > Prolly nothing special, looked like a double ended, stepped, industrial > > type drill bit to me. Wish I could give you more info.. > > > > Dan > > > > Frederic Breitwieser wrote: > > > > > > > own bosses from 6061 tubing (27/32 O.D., why that size I don't know, may > > > > be it was supossed to be 7/8). The holes I drilled in the intake were > > > > > > Nope, prolly 27/32 is right for that tubing if you are > > > talking inside diameter - that's the right hole to drill if > > > you want to tap the tubing to 7/8, therefore that tubing was > > > for tie rods, suspension pieces, etc. > > > > > > Neat little useless fact :) > > > > > > > I finished to inside of the boss with a 14mm ream and lots of cutting > > > > fluid to make a smooth cut. > > > > > > Yeah, I ground a lot off too top and bottom. Not exactly > > > the way I want, but all eight injectors are the same height, > > > so right or wrong, its consistant. > > > > > > -- > > > Frederic Breitwieser > > > Bridgeport, CT 06606 > > > > > > http://www.xephic.dynip.com > > > 1993 Superchaged Lincoln Continental > > > 1989 500cid Turbocharged HWMMV > > > 1975 Dodge D200 Club Cab (soon to be twin turbo 440) > > > 2000 Buick GTP (twin turbo V6) > > > > -- > > *********************************************************************** > > Dan Smith 84 Regal 12.13@112 GSCA# 1459 > > St.Charles, Missouri > > mailto:dcsmith@xxx.net > > http://www.tetranet.net/users/morepoweral > > *********************************************************************** > > ------------------------------ Date: Sat, 27 Mar 1999 07:24:31 -0700 From: bearbvd@xxx.net (Greg Hermann) Subject: Re: EFI Intake Conversion (1 of 2) >Hey Guys, > > I saw a neat little drill bit at a Accell or something, truck at the >Craftsman Nationals last summer. It was a stepped injector drill bit, >for cutting injector holes in intakes. Can't give you any more info than >that I saw one and know they exist. > Prolly nothing special, looked like a double ended, stepped, industrial >type drill bit to me. Wish I could give you more info.. > >Dan Dunno if it is what you saw Dan, but MSD Fuel Management (same folks as for ignition) sell a Silver & Deming (stepped shank) drill bit with the tip reshaped for finish drilling injector bosses to the correct shape. Regards, Greg ------------------------------ Date: Sat, 27 Mar 1999 07:28:15 -0700 From: bearbvd@xxx.net (Greg Hermann) Subject: Re: MAF airflow numbers >-----Original Message----- >From: Clarence L.Snyder >To: diy_efi@xxx.edu> >Date: Saturday, March 27, 1999 12:39 AM >Subject: Re: MAF airflow numbers > >Ya, fine, but all he gave was FPM >Bruce He did give temperature, which is also a very significant factor. Relative humidity is not as significant, but is certainly a factor. Greg > > >>> Don't "we" need volume?. I'm missing something about how velocity >equates >>> to CFM?. >>velocity through a given area equates to a specific volume flow. >>if air flows 1 foot per minute through a one square foot hole, you have >>1 cubic foot per minute. If you know the pressure you can calculate mass >>flow rate as well. >> ------------------------------ Date: Sat, 27 Mar 1999 15:14:52 +0000 From: Frederic Breitwieser Subject: Re: EFI Intake Conversion (1 of 2) > I saw a neat little drill bit at a Accell or something, truck at the > Craftsman Nationals last summer. It was a stepped injector drill bit, > for cutting injector holes in intakes. Can't give you any more info than That would have been much nicer than using a lathe to cut it out. Ugh! - -- Frederic Breitwieser Bridgeport, CT 06606 http://www.xephic.dynip.com 1993 Superchaged Lincoln Continental 1989 500cid Turbocharged HWMMV 1975 Dodge D200 Club Cab (soon to be twin turbo 440) 2000 Buick GTP (twin turbo V6) ------------------------------ Date: Sat, 27 Mar 1999 08:31:39 -0800 (PST) From: andy quaas Subject: Re: EFI Intake Conversion (1 of 2) force-efi sells 8 injector bungs for $60. Accel has some, but i haven't called about price yet. Since i don't have a lathe or time, i will prolly pay the $60. Accel also has a neat thing that adapts a TPI throttle-body onto a holley carb intake, which is exactly what i was planning on doing! Andy - --- Frederic Breitwieser wrote: > > I saw a neat little drill bit at a Accell or > something, truck at the > > Craftsman Nationals last summer. It was a stepped > injector drill bit, > > for cutting injector holes in intakes. Can't give > you any more info than > > That would have been much nicer than using a lathe to > cut it > out. Ugh! > > -- > Frederic Breitwieser > Bridgeport, CT 06606 > > http://www.xephic.dynip.com > 1993 Superchaged Lincoln Continental > 1989 500cid Turbocharged HWMMV > 1975 Dodge D200 Club Cab (soon to be twin turbo 440) > 2000 Buick GTP (twin turbo V6) > _________________________________________________________ Do You Yahoo!? Get your free @xxx.com ------------------------------ Date: Sat, 27 Mar 1999 11:04:29 -0600 (EST) From: eclark@xxx.com Subject: Re: Nitrous On Fri, 26 Mar 1999 WATCHmeDRV@xxx.com wrote: > Hi all I am a distributor for Compucar Nitrous Oxide Systems, if anyone on the > lists would like a kit for their engine please e-mail me or leave a message on > my voice mail an I will return your call ASAP 706-339-1687. > Thanks > DETROIT AMERSON > Wow, I see a new trend. Selling speed parts through spam. - -Eric ------------------------------ Date: Sat, 27 Mar 1999 11:04:29 -0600 (EST) From: eclark@xxx.com Subject: Re: Nitrous On Fri, 26 Mar 1999 WATCHmeDRV@xxx.com wrote: > Hi all I am a distributor for Compucar Nitrous Oxide Systems, if anyone on the > lists would like a kit for their engine please e-mail me or leave a message on > my voice mail an I will return your call ASAP 706-339-1687. > Thanks > DETROIT AMERSON > Wow, I see a new trend. Selling speed parts through spam. - -Eric ------------------------------ Date: Sat, 27 Mar 1999 10:45:05 +0000 From: "Fran and Bud" Subject: Have 165 / Need 747 I have a 165 on the shelf for a project that is for "when I run out of other things to do". - -BUT- I need a 747 "YESTERDAY"!!!. Anyone out there have the reverse??? Bud ------------------------------ Date: Sat, 27 Mar 1999 10:48:44 -0800 (PST) From: Jim Davies Subject: Re: identifying a Chevy 350 block and Trans On Sat, 27 Mar 1999, Clarence L.Snyder wrote: > I don't follow your logic, Clarence. > > I have two C-50 Chevy trucks with 350 engines and both have 2 barrel > Rochesters. Dunno how many bolts on the main caps, tho. > > Up here most 350 truck engines were 4bbl 4 bolt, very few if any 4 bolts > had 2 bbls. There were undoubtably some 350 2 bbl trucks, and likely > some 4bbl 2 bolt truck engines as well, but odds are in your favour of > 4bbl truck engines to be 4 bolt, and also for 4 bbl 4 bolts to be truck > engines. For putting out moderately serious power without extensive > modifications, the truck engine lends itself well to the task. > Light duty and heavy duty 350s are different animals. HD 350s all had 2 barrels and were governed. Heads, walve sizes, valve stems etc etc were all different. ------------------------------ Date: Fri, 26 Mar 1999 20:53:16 +0200 From: John Andrianakis Subject: RE: Valve Overlap A system like this is used in the Ford Escort Cosworth rally cars to reduce spool up time of the turbo. When the throttle is shut the ignition advance is retarded by about 30 deg and the idle control motor opens all the way to maintain a rather high idle(1500 rpm?). This leads to late combustion, mostly igniting in the exhaust manifold without power to rev the engine. The exhaust gases keep the turbo revs high and when you depress the throttle you get almost instant boost. The system is very demanding on the exhaust valves and turbo turbine. For that reason the turbine is made from inconel- high temp metal(the same as used for the McLarren F1 exhaust system tubing). Several people have tried to use the system on the street but the high noise, backfiring and flame spiting exhaust along with the cost of the damaged turbos makes it not such a good option. The special turbine wheel I ve seen costing around $1300. Mitsubishi rally cars have employed a different system. They have a blow off valve that directs some of the air through a one way valve directly into the exhaust manifold. To make use of the extra air in the exhaust manifold to spool up the turbo the ecu adds fuel when the throttle is shut(above certain rpm, maybe sensing intercooler plumbing pressure). Along with retarded timing this creates exhaust gases with no additional power. The problem is that the system is only effective for a second or two and mostly between shifts. On Thursday, March 25, 1999 8:26 PM, Bruce Plecan [SMTP:nacelp@xxx.net] wrote: > > -----Original Message----- > From: Robert Harris > To: diy_efi@xxx.edu> > Date: Thursday, March 25, 1999 11:03 AM > Subject: Re: Valve Overlap > > > > >Now if you want to spin the turbo up in a hurry, you might consider > selective > >spark RETARD. Buick GN's do it all the time. > > Can I ask where in the program this is incorporated?. > > > >By momentarily retarding the spark, say to 30 degrees after TDC, combustion > >starts way late and slow and the majority of the charge burns and expands > in > >the exhaust manifold greatly increasing the volume of gas to spin the turbo > >which greatly increases the inlet charge ..... > > Wouldn't that be kinda hard on the exhaust valve?. > Bruce > > >The result is very quick acceleration by exactly the effect that you want - > >blowing fire into the exhaust - without being defeated by the physics. And > >its on list topic. > ------------------------------ Date: Sat, 27 Mar 1999 13:08:44 -0800 From: Eric Aos Subject: Re: diy flow bench I didn't realize there was still interest. I've scanned the PHR Articles... http://www.spiritone.com/~eoa/Cars/Flow_Bench/Flow_Bench.htm ------------------------------ Date: Sat, 27 Mar 1999 19:05:26 -0500 From: "David A. Cooley" Subject: EPROM Emulator Hey all, Found a cheap emulator on the web that supports up to 27512 eproms...... Have to build it though, just circuit and parts list... Ran it through Protel and have the GERBER files for a double sided PCB... Parts should be about $50.00, not sure what PCB's run to have made... Any suggestions on how to go about this appreciated, and if anyone wants to run with this, I can send you the files. Thanks, Dave =========================================================== David Cooley N5XMT Internet: N5XMT@xxx.net Packet: N5XMT@xxx. Member #7068 I am Pentium of Borg...division is futile...you will be approximated. =========================================================== ------------------------------ Date: Sat, 27 Mar 1999 21:25:25 -0500 From: Mike Turner Subject: Ford Injectors The injectors on the Ford F250 V10 do not appear to be the Bosch physical design we have all come to know and love : ). Can anyone shed some light on who made the new ones and what their characteristics are? ------------------------------ Date: Sat, 27 Mar 1999 21:28:06 -0500 From: "David A. Cooley" Subject: Re: Ford Injectors At 09:25 PM 3/27/99 -0500, you wrote: >The injectors on the Ford F250 V10 do not appear to be the Bosch >physical design we have all come to know and love : ). Can anyone shed >some light on who made the new ones and what their characteristics are? Probably Siemens injectors... They seem to be coming on strong in the auto industry with more and more components across the board. They even make the new composite carbon fiber/plastic intake for the new chrysler products! (neon etc) =========================================================== David Cooley N5XMT Internet: N5XMT@xxx.net Packet: N5XMT@xxx. Member #7068 I am Pentium of Borg...division is futile...you will be approximated. =========================================================== ------------------------------ Date: Sat, 27 Mar 1999 22:07:00 -0800 (PST) From: Jim Davies Subject: Re: Ford Injectors On Sat, 27 Mar 1999, David A. Cooley wrote: > Probably Siemens injectors... > They seem to be coming on strong in the auto industry with more and more > components across the board. They even make the new composite carbon > fiber/plastic intake for the new chrysler products! (neon etc) > They supply returnless injectors to chryler for their newer stuff... ------------------------------ Date: Sun, 28 Mar 1999 16:25:17 +1000 From: Niki Albury Subject: Data logger Hi Guys sometime back one of you guys was playing around with data logging, using a PIC as the controller. Can anyone give me any more info on this topic. Justin ------------------------------ Date: Sun, 28 Mar 1999 18:36:55 +1000 (EST) From: Benjamin Marsh Subject: Re: EPROM Emulator Can you post a URL? Ben On Sat, 27 Mar 1999, David A. Cooley wrote: > Hey all, > Found a cheap emulator on the web that supports up to 27512 eproms...... > Have to build it though, just circuit and parts list... > Ran it through Protel and have the GERBER files for a double sided PCB... > Parts should be about $50.00, not sure what PCB's run to have made... Any > suggestions on how to go about this appreciated, and if anyone wants to run > with this, I can send you the files. > Thanks, > Dave > > =========================================================== > David Cooley N5XMT Internet: N5XMT@xxx.net > Packet: N5XMT@xxx. Member #7068 > I am Pentium of Borg...division is futile...you will be approximated. > =========================================================== > ------------------------------ End of DIY_EFI Digest V4 #197 ***************************** 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".