KC Phirus Posted February 12, 2012 Report Share Posted February 12, 2012 So I like simplicity. I like simple mechanical carburetors. I don't like working on carburetors. I don't like starting my truck with it's 22f outside. I've decided on Fuel Injection. I've gone through several thread of efi setups. I know there were JDM injected L20Bs. But, I don't like electronics on my engines. At least when it comes to "computers". Mechanical would be awesome, but I don't see that happening without a ton of fab. So a few questions. Lets say I'm going to do a simple multi port efi system. Based on fuel requirements of an L20B. What car should I pull injectors from? Is there a car that has all of the necessary components to build an injected L20B? I think I saw something about some 720's with injected L20Bs? If I was to use some cheapo GM injectors etc. How would I go about controlling the injectors? How is the output of throttle body injection controlled? Has anyone considered this as an option? Was thinking maybe we could just dump L series injection information here as a resource. Quote Link to comment
Laecaon Posted February 12, 2012 Report Share Posted February 12, 2012 My plan was to run a 280zx turbo dizzy drive shaft, then run a spacer to allow the KAe Dizzy. Manifold seems like the hardest part, but make that and you are golden. Get the electric fuel pump you need, and proper baffles. Run the KA ECU to run the injectors, and whatever it needs off of the Dizzy. Need things like the Throttle body, and AFM... Oh, and you would probably need an o2 sensor welded on. The KA ecu is single fire, and reads how much air is coming, temp... should be able to adjust the fuel amount that a L20b would take. Quote Link to comment
flatcat19 Posted February 12, 2012 Report Share Posted February 12, 2012 200sx Keep reading. Start saving. Quote Link to comment
Laecaon Posted February 12, 2012 Report Share Posted February 12, 2012 Also consider TBI. Quote Link to comment
KC Phirus Posted February 12, 2012 Author Report Share Posted February 12, 2012 My plan was to run a 280zx turbo dizzy drive shaft, then run a spacer to allow the KAe Dizzy. Manifold seems like the hardest part, but make that and you are golden. Get the electric fuel pump you need, and proper baffles. Run the KA ECU to run the injectors, and whatever it needs off of the Dizzy. Need things like the Throttle body, and AFM... Oh, and you would probably need an o2 sensor welded on. The KA ecu is single fire, and reads how much air is coming, temp... should be able to adjust the fuel amount that a L20b would take. That's kind what I was thinking, I think I've never worked with fuel injection. What I was think about............... Is points between the points in the distributor cap. These points would be connected to relays for the individual injectors. As the dizzy spins it activates the relays, which fire the injectors. the points are placed based on which piston is on it's intake stroke at the "point". I'm probably trying to design something that already exist, but I do it all the time I'll draw it up. Quote Link to comment
Laecaon Posted February 12, 2012 Report Share Posted February 12, 2012 I dont know about "ghetto", but whats wrong with throttle body injection? Yes it isn't as elegant as multi port, but you get smart air fuel mix, no choke to worry about, so cold start is a no problem situation, and they are low pressure feed systems, wich still use hose clamps on the fuel lines. I Chose 2.2/2.5 chryser throttle body to use because 1, so easy to find and I am a dodge guy anyways, 2, they use a hall effect switch, wich basically is a condensed version of a cam/crank trigger housed in the dizzy, that is why I adapted the chrysler distributor to the datsun pedastel. Hooked up the wiring to the throttle body, hall effect switch and MAP sensor. Used the chrysler coil and piggybacked the necessary wiring into the stock datsun stuff. The dodge ecm requires air to flow through it, to cool it and also to use it as an air intake temp sensor. I used a 12 v electric fan for a computer for air flow, like I have done on many dodge shadows that i did a non stock intake on. Plus you can use your stock intake..........a carburetor mixes air and fuel and delivers it through the manifold, so now you have an electronically controlled fuel injector doing the same thing, and a bit of port work will make a difference just like using a carb......... I think it is simple, elegant and if you remember there were MANY MANY turbocharged 2.2 2.5 chrysler rigs on the road, and they were setup like an L series with intake and exhaust on the same side, would be REALLY easy to turbo an L series engine with EFI this way, using tried and true readily available technology.........In fact thats our next project for up here in the northwoods. Good luck with all your ideas! Bill Quote Link to comment
KC Phirus Posted February 12, 2012 Author Report Share Posted February 12, 2012 Also consider TBI. I mentioned that. A buddy of mine had a 90's chevy 350 with factory TBI and it was efficient, reliable, and powerful. Plus I love the look. Also I think TBI would be a good choice for some forced intake. Quote Link to comment
KC Phirus Posted February 12, 2012 Author Report Share Posted February 12, 2012 200sx Keep reading. Start saving. Are you suggesting using sr20 components? Quote Link to comment
Laecaon Posted February 12, 2012 Report Share Posted February 12, 2012 Are you suggesting using sr20 components? No, like the early 200sx with the L20b in it. Good luck finding it. Maybe that is the Z20e... Quote Link to comment
Sealik Posted February 12, 2012 Report Share Posted February 12, 2012 What car should I pull injectors from? Is there a car that has all of the necessary components to build an injected L20B? I think I saw something about some 720's with injected L20Bs? Was thinking maybe we could just dump L series injection information here as a resource. Injectors would be from a Z22E or Z20E...and possibly 280ZX...etc 82 200sx ECM(U), harness and throttle body...fab up your own IM/plenum I have the 200sx EFI/VG30E TB in a 720...but it's on a early Z24 engine...not the L... Quote Link to comment
Guest 510kamikazifreak Posted February 12, 2012 Report Share Posted February 12, 2012 Are you suggesting using sr20 components? Z20E get the 200sx swap the whole thing(motor) over its cheap,proven,reliable efi. Quote Link to comment
Sealik Posted February 12, 2012 Report Share Posted February 12, 2012 Z20E get the 200sx swap the whole thing(motor) over its cheap,proven,reliable efi. Correct...but...if at all possible... go for the 'newer' :D Z22E. AFM can be re-clocked to compensate...if needed Quote Link to comment
Guest 510kamikazifreak Posted February 12, 2012 Report Share Posted February 12, 2012 Correct...but...if at all possible... go for the 'newer' :D Z22E. AFM can be re-clocked to compensate...if needed :D lose the 4 extra plug wires tho :lol: Quote Link to comment
KC Phirus Posted February 12, 2012 Author Report Share Posted February 12, 2012 Z20E get the 200sx swap the whole thing(motor) over its cheap,proven,reliable efi. Can't I just pull the top half and bolt it to my l20b? Quote Link to comment
Guest 510kamikazifreak Posted February 12, 2012 Report Share Posted February 12, 2012 Can't I just pull the top half and bolt it to my l20b? counter productive. Quote Link to comment
KC Phirus Posted February 12, 2012 Author Report Share Posted February 12, 2012 counter productive. Same bottom end reliability as the L series? More importantly, If I was to do a z swap, can I reuse my engine mounts and transmission. I'd consider this. I want to rebuild the L. It's a good running motor but has plenty of leaks and by the time I do chain, valve seals, etc, I might as well rebuild it. But this thread is for efi info collaboration So I could use the injection system from the z** motors right? Quote Link to comment
Laecaon Posted February 12, 2012 Report Share Posted February 12, 2012 So I could use the injection system from the z** motors right? If you make a manifold. And meet the fuel requirements. Quote Link to comment
Sealik Posted February 12, 2012 Report Share Posted February 12, 2012 :D lose the 4 extra plug wires tho :lol: One can utilize their own 8 plug head.... :D Quote Link to comment
Guest 510kamikazifreak Posted February 12, 2012 Report Share Posted February 12, 2012 here is some info on the different franky motors.. http://www.newprotest.org/projects/510/jasonGray.pl But as close to a plug and play as you could get would be a Z20E or Z22E(I like the Z20 myself :) ) Quote Link to comment
albyneau Posted February 12, 2012 Report Share Posted February 12, 2012 The answer is so simple it's scary~ adopt a 2.4L TBI from a Cavalier! It'll work on an L20, and might need recalibration on lesser size motors~ but parts'll be available til the end of time.... Working on this as we speak~ Peace~ Scott Quote Link to comment
Guest 510kamikazifreak Posted February 12, 2012 Report Share Posted February 12, 2012 One can utilize their own 8 plug head.... :D :) :lol: Quote Link to comment
datsunfreak Posted February 12, 2012 Report Share Posted February 12, 2012 More importantly, If I was to do a z swap, can I reuse my engine mounts and transmission. Not a good idea to do that. But the mounts can usually be swapped side-to-side. L leans a little to the left (as you're viewing it from the front), Z leans a bit to the right. So if you re-use your mounts, it will lean the wrong way. Trans is also clocked differently because of that. Better to use the Z20E trans. If you can find a cheap running '80-83 200SX it gives you everything you'd need. To your original point, I'd pilfer the EFI bits from an '80 200SX to run an EFI L20b. It's basically the same stuff they used in Japan on the EFI L18 and easy to find replacement parts for. You can either source a JDM intake, cut down a 280Z intake, or make your own. The Z20E EFI only requires 7 wires to hook up, doesn't need an O2 sensor, and is dead nuts simple. Some info here: http://datsun1200.com/modules/mediawiki/index.php?title=200SX_EFI Quote Link to comment
Guest 510kamikazifreak Posted February 12, 2012 Report Share Posted February 12, 2012 Trans is also clocked differently because of that. Better to use the Z20E trans. If you can find a cheap running '80-83 200SX it gives you everything you'd need. this... Quote Link to comment
Sealik Posted February 12, 2012 Report Share Posted February 12, 2012 The Z20E EFI only requires 7 wires to hook up, doesn't need an O2 sensor, and is dead nuts simple. Actually.. it'll run on 5 wires...4 on a good day... :D Maybe... ;) Quote Link to comment
docbainey Posted February 12, 2012 Report Share Posted February 12, 2012 Megasquirt. Quote Link to comment
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