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I have a 1967 Chevy C10 pickup which I would like to convert to electronic fuel injection. http://www.ices.utexas.edu/~cell/images/c10.jpg The engine in question is a 292 cubic inch inline 6 cylinder -- a somewhat rare motor. http://www.ices.utexas.edu/~cell/images/292.jpg ---- VEMS or MegaSquirt? My decision to use VEMS over MegaSquirt is twofold: * I already have experience with Atmel AVR microcontrollers * I know C ---- O2 sensor bung installed A few days ago I received my bung and O2 sensor from summit, and I just had it installed at a muffler shop. They charged me $45 for installation, which seems a bit on the steep side, but I was so excited about finally getting this project off the ground that I didn't care. Unfortunately my camera is on the fritz, so no pictures (yet). My carburetor has an idle circuit mixture adjustment screw, and I was able to confirm that a rich mixture reads near 0.8 volts, and a lean mixture reads near 0.2 volts. ---- Manifold As there was no version of this engine (that I am aware of) which came with fuel injection, there is no existing manifold which supports port injection. There is the option of purchasing a performance manifold which can mount a 4 bbl carburetor, onto which a tbi assembly could be mounted. However, I have no desire to spend $300 on an intake manifold. I will be taking a welding course in march (8 weeks from now), at which point I will be able to fabricate my own manifold. This will tie nicely into a book I am reading, "The scientific design of intake and exhaust systems". My plan is to make a tuned intake for optimum highway efficiency. ---- Use existing manifold? Well, it turns out that 1bbl fuel injection throttle bodies do exist, which means I may be able to get this project off the ground using my existing manifold. According to the [http://en.wikipedia.org/wiki/GM_Iron_Duke_engine#Tech_IV wikipedia page on the iron duke], the GM 2.5L inline 4 was fitted with a single injector 1bbl throttle body which had many applications in the 1980's. At first glance, the mounting gaskets appear to indicate this may be a simple bolt-on solution: http://www.ices.utexas.edu/~cell/images/c10-gasket.jpg http://www.ices.utexas.edu/~cell/images/lumina-gasket.jpg Time to hit up the junk yards and get my hands on one so I can take some measurements. update: I have posted to a fiero forum (one of the applications for the fuel injected iron duke), and it looks like this single barrel tbi unit is not a simple bolt-in solution: http://www.fiero.nl/forum/Forum2/HTML/079883.html ---- Post Injection Vaporization started a page (PostInjectionVaporization) to discuss implementing this. ---- Parts A short list of parts links for my own benefit. * MSD coolant temp sensor at [http://store.summitracing.com/partdetail.asp?autofilter=1&part=MSD%2D2310&N=700+4294810443+115&autoview=sku summit] ($10.88) * GM coolant temp sensor at [http://www.rs-autosport.net/catalog/product_info.php?products_id=215 rs-autosport] ($15.00) * MSD intake air temp sensor at [http://store.summitracing.com/partdetail.asp?autofilter=1&part=MSD%2D2320&N=700+4294812331+115&autoview=sku summit] ($15.88) * GM intake air temp sensor at [http://www.rs-autosport.net/catalog/product_info.php?products_id=216 rs-autosport] ($20.00) * MSD 1 bar MAP sensor at [http://store.summitracing.com/partdetail.asp?autofilter=1&part=MSD%2D2311&N=700+115&autoview=sku summit] ($45.88) * 1 wire O2 sensor at [http://store.summitracing.com/partdetail.asp?autofilter=1&part=CTO%2DO2%2D1&N=700+4294859014+115&autoview=sku summit] ($25.39) * O2 sensor weld-in bung at [http://store.summitracing.com/partdetail.asp?autofilter=1&part=BIG%2D10120FLT&N=700+4294859977+115&autoview=sku summit] ($14.99)
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