I have an old 4 stroke machine car, which still using carburetor, and a distributor for an ignition. Is ther anybody know how to modify it so I can use an ECU. Is there any link or site?
Making ECU for old 4 stroke machine
What you wanna do is find yourself an EFI (electronic fuel injection) setup off of a similar engine and, if its not already got one, an electronic ignition unit.
Depending on how much you are willing to spend, and the configuration of your engine you might want to look into purchasing a brand new aftermarket unit. Companies like MSD and Holley make these, but if they dont have the correct configuration for your engine (firing order, no. of cylinder banks etc.) it may best just to pull one off of an engine thats the same or similar to yours.
The first thing to consider, if your using the FEI setup off another engine, is firing order. If the firing order on the one you have is incorrect for your engine, you can A). have another chip made or B). re-arrange the order of the fuel injectors to suit. This, however will only work if you have one bank of cylinders (straight 6 etc.) The order of the injectors can not be swapped on engines with two cylinder banks (V6, V8 etc.) because on all EFI engines there is an O2 sensor in each exhaust manifold which is udes for sensing levels of oxygen, carbon monoxide and unburnt fuel passing through the exhaust. Now The engine computer knows which injectors are on which O2 sensor, and therefore if there is too much carbon monoxide or unburnt fuel coming from one bank of cylinders it knows to change the amount of fuel going into that side. However if the engine computer thinks (for arguments sake) injectors 3, 1, 6 and 8 are on one side, but you actually have injectors 1,2,3 and 4 on there, it makes things difficult, and you will be constantly having problems with it.
Other than that, its a reasonably simple installation. Swap carb for throttle body, mount injectors in intake manifold, connect fuel rails, install knock/ping sensors and put O2 sensors in exhaust manifolds. Make sure you upgrade your fuel lines and fuel pump too. EFI engines need high flow fuel lines and pumps, as well as a fuel return line (to take unused gas back to the tank)
I think thats all, good luck with your project and keep us updated.
Depending on how much you are willing to spend, and the configuration of your engine you might want to look into purchasing a brand new aftermarket unit. Companies like MSD and Holley make these, but if they dont have the correct configuration for your engine (firing order, no. of cylinder banks etc.) it may best just to pull one off of an engine thats the same or similar to yours.
The first thing to consider, if your using the FEI setup off another engine, is firing order. If the firing order on the one you have is incorrect for your engine, you can A). have another chip made or B). re-arrange the order of the fuel injectors to suit. This, however will only work if you have one bank of cylinders (straight 6 etc.) The order of the injectors can not be swapped on engines with two cylinder banks (V6, V8 etc.) because on all EFI engines there is an O2 sensor in each exhaust manifold which is udes for sensing levels of oxygen, carbon monoxide and unburnt fuel passing through the exhaust. Now The engine computer knows which injectors are on which O2 sensor, and therefore if there is too much carbon monoxide or unburnt fuel coming from one bank of cylinders it knows to change the amount of fuel going into that side. However if the engine computer thinks (for arguments sake) injectors 3, 1, 6 and 8 are on one side, but you actually have injectors 1,2,3 and 4 on there, it makes things difficult, and you will be constantly having problems with it.
Other than that, its a reasonably simple installation. Swap carb for throttle body, mount injectors in intake manifold, connect fuel rails, install knock/ping sensors and put O2 sensors in exhaust manifolds. Make sure you upgrade your fuel lines and fuel pump too. EFI engines need high flow fuel lines and pumps, as well as a fuel return line (to take unused gas back to the tank)
I think thats all, good luck with your project and keep us updated.
| Quote: |
| I have an old 4 stroke machine car |
Huh? As opposed to a new 2 stroke machine car?
I didn't know any cars were being made with 2 strokes.
Do you happen to mean 4 cylinders?
I would say forget about converting a carb over to fuel injection.
It's a totally different wiring harness.
You could probably part out the old car and sell the parts on ebay
and make enough money to buy an old beater fuel injected car.
Hi
You can convert to fuel injection by using throttle bodies, these can be simple EFI type (single injector into manifold) or one injector per port. As for ignition you can use the existing, go electronic using a simple conversion (ford edis) or go completly distributor less.
You can buy ECU's or build your own... take a look at http://www.megasquirt.info
Some people on the net have used bike carbs and/or throttle bodies.
All depends on how much you want to spend !!!
cheers
You can convert to fuel injection by using throttle bodies, these can be simple EFI type (single injector into manifold) or one injector per port. As for ignition you can use the existing, go electronic using a simple conversion (ford edis) or go completly distributor less.
You can buy ECU's or build your own... take a look at http://www.megasquirt.info
Some people on the net have used bike carbs and/or throttle bodies.
All depends on how much you want to spend !!!
cheers
I would not advise to install EFI at old car... It is a lot of job with electrical wiring, headblock, and tuning... It is better to install new or repaired performance or just simple carburator from Weber. Or even just repair your old carb with repairing kit. The results will be great! I also have a car with old Ford OHC engine (i have repaired it and carb too).
Now about ECU. There many types of aftermarket tuning ECUs on a world market! Just buy it and install it! Do not invent the bicycle! Try to search OMEX unitsin a web.
Now about ECU. There many types of aftermarket tuning ECUs on a world market! Just buy it and install it! Do not invent the bicycle! Try to search OMEX unitsin a web.
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