delco conversion on toyota 4efe efi engine

[The1]

Depending on your rail commodore injectors may not fit, some denso injectors are smaller at the fuel inlet, also manifold boss size maybe wrong to, it maybe easier to get a commodore rail with reg and mod it to fit depending on injector spacing. You might even need to get some spacers milled to fit.

[gorbosvs]

I will look into it, the injector wiring plugs look identical to commodore plugs, i will check compatibility with partners vs commodore

[Holden202T]

are you sure about the plugs ? your look rounded on the sides, whereas the commodore ones are definitely a square plug!

[gorbosvs]

I will check sometime today and get back to here with my findings

[VL400]

Measure the injector impedance/resistance with a multimeter to confirm they are high impedance, 99% sure they are. If it was my conversion I wouldnt be swapping injectors if they are high impedance, too much effort for my laziness. Standard injectors, rail and pressure reg is the simplest option.

Get a rough idea on the injector size by averaging your google findings or get them cleaned and flow tested. Set the base injector rate to something close and start tuning.

The following might be a little complex for now, but will make sense once you start getting in to the ECU. Setting the injector opening times can be done on a running engine by using single and double fire injector options and changing the opening times. When there is no change to the AFR on your wideband when flicking between the two modes the opening times are close to spot on for that voltage, remove the alternator plug and repeat for a lower voltage. Gives you two points that cover most of the general operating voltages. To confirm it all works get the VE correct so target AFR matches the wideband, then using some ALDL commands to change the target AFR - it should match the wideband.

[gorbosvs]

I did some googling, and found on injector-rehab.com that the toyota injectors are 205cc 20lb/hr at 3 bar and the impedance is 14.6 ohms, but yet to test ohms with multimeter, my multimeter gave up the ghost when i went to test the injectors, so in search for a new one

[antus]

if you dont swap them do remember that its not just flow rate but also opening times. you can and should tune this after its running. its hard to find this data for most injectors but if its not available there are ways to figure it out.

[gorbosvs]

I will check and see if commodore injectors fit into toyota rail and go from there, how hard would it be to check opening times on the injectors

[VL400]

My post above has the method for working out the opening times. If done properly is accurate.

[gorbosvs]

Ok sounds like its doable once all is connected and going, i looked at the toyota injectors against commodore ones, the plug type is rounded on corners were as commodore are square, and the toyota injectors push into rail and dont have a push on clip like commodore ones, but injector tops seem to same size, i could cut n splice toyota plugs into pulsar/camira harness, or try to use camira/pulsar fuel rail