DIY_EFI Digest Wednesday, 27 December 1995 Volume 00 : Number 014 In this issue: Re: Carb vs Fuel Injection Carb vs. EFI Re: Carb vs. EFI 2 Questions about GM-TBI Re: Re: Carb vs Fuel Injection See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Jim Zurlo Date: Tue, 26 Dec 1995 07:50:13 -0600 (CST) Subject: Re: Carb vs Fuel Injection At 08:10 AM 12/22/95, you wrote: >Ok, it looks like no one reads Hot Rod. In a previous post, I asked if >anyone has read the issue of Hot Rod that had an article on >Carburetion vs Fuel Injection. Since I have not received a reply, I must >assume that either someone is too embarrassed to admit that they read >Hot Rod or that no one reads it. I tried to find it down at the >University, but they stopped their subscription in 1991 :(. > >The title is Carburetion vs. Fuel Injection in the October 1, 1994 issue >of Hot Rod. The summary of the article is "the dyno doesn't lie." >Derrick Early >early@xxx.mil > I haven't read the article, but we do OK with just carbs. We get 3000 BHP with an Impco 6 pack. That's 220 psi BMEP! Bet none of your fuel injected engines have that kind of BMEP. The carbs are quite durable although they are not the best for transients, but who cares about transients any way. Oh, I suppose I should mention that's from a 214 liter turbocharged natural gas engine used in industrial applications :-) Jim Zurlo zurlo@xxx.com ------------------------------ From: jim_brady@xxx.gov Date: Tue, 26 Dec 95 10:45:33 EST Subject: Carb vs. EFI Derrick (Early), I have been receiving Hot Rod for a few years now and found that article interesting. I truly believe they were mostly interested in quarter mile et's. While a carbuerator is considerably cheaper and very effective at the Drags, the versitility and efficiency of the EFI (particularly TPI) is unparalled. I have the '63 Chevy on the DYI_EFI web site. It is carbuerated (because of cost) but eventually I will install a late model TPI unit for better gas mileage and consistent performance. Having a fast V-8 is AWESOME but when your filling that tank with 93 octane (10.5:1 compression) you want every drop used as efficiently as possible. Hot Rod also had special on aftermarket EFI units in the April '94 edition. So, if your drag racing the expense of fuel injection is a bit extravagant but for every day cruisability fuel injection is worth the initial investment. MTaylor, I subscribe to PHR, Car Craft and Hot Rod. Hot Rod has stated the reason for their Chevy bias: a majority of street rodders drive Chevys. I love them all! I have a Ford Pickup and find it far superior to Chevrolets offerings. The basics are the same no matter what badge your vehicle wears. Has anyone out there retrofitted TPI for early model vehicles? Any info would be appreciated. Diamond Jim Brady '63 Chevy '71 Ford Pickup '92 Grand AM ------------------------------ From: Derrick Early Date: Tue, 26 Dec 95 12:25:48 "EST Subject: Re: Carb vs. EFI > Derrick (Early), > I have been receiving Hot Rod for a few years now and found that > article interesting. I truly believe they were mostly interested in > quarter mile et's. While a carbuerator is considerably cheaper and > very effective at the Drags, the versitility and efficiency of the EFI > (particularly TPI) is unparalled. I have the '63 Chevy on the DYI_EFI > web site. It is carbuerated (because of cost) but eventually I will > install a late model TPI unit for better gas mileage and consistent > performance. Having a fast V-8 is AWESOME but when your filling that > tank with 93 octane (10.5:1 compression) you want every drop used as > efficiently as possible. Hot Rod also had special on aftermarket EFI > units in the April '94 edition. So, if your drag racing the expense > of fuel injection is a bit extravagant but for every day cruisability > fuel injection is worth the initial investment. > Jim, Thank you for the reply. What kind of change did you get in your fuel economy? Just curious, - -- Derrick Early early@xxx.mil ------------------------------ From: "Brandon L. Walters" Date: Tue, 26 Dec 1995 13:10:25 -0600 (CST) Subject: 2 Questions about GM-TBI Please excuse me if this has been well-thrashed previously. I have a late Chevy truck w/350 and TBI. I wanted to experiment with it some. 1. Is anybody using GM TBI injectors in their projects? They seem quite rugged & I wonder what all you can do with them. 2. If you want to fabricate your own tuned intake runners for a 350, what is the best way to replace the lower part of the manifold? The TPI style setup is not what I had in mind. Cheers & Happy New Year, Brandon Walters ------------------------------ From: Clint Sharp Date: Wed, 27 Dec 1995 09:11:30 GMT Subject: Re: Re: Carb vs Fuel Injection In your message dated Tuesday 26, December 1995 you wrote : > I haven't read the article, but we do OK with just carbs. We get > 3000 BHP with an Impco 6 pack. That's 220 psi BMEP! Bet none of your > fuel injected engines have that kind of BMEP. The carbs are quite durable > although they are not the best for transients, but who cares about transients > any way. BMEP no, but 3000BHP on a 214 litre engine works out to 14.something BHP per litre so my fuel injected 1.6l is slightly more powerful at 71 BHP per litre therefore FI rules :-) - -- We apologise for the lack of coherent humorous comments. Normal service will be resumed shortly. clint@xxx.uk ------------------------------ End of DIY_EFI Digest V0 #14 **************************** 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".