Looking to throw a 1990 Renix head and fuel injection system on a 4.2L I6. I will be getting a 4.2 short block and have a 1990 4.0XJ with a seized crank at my disposal. It's all going into an 82 J10. I would like to use as many parts that I already have on hand as possible but will do whatever it takes to make it all work.
Will the 'ECU' be able to handle the extra 0.2L? Also, what all wiring will need to come out of the XJ in order for me to swap the fuel injection system over? I plan on running an AX-15 but the XJ that is donating the parts has the AW4, will this cause trouble or is the tranny on a different computer than the engine? Can I run the 4.0 distributor on the 4.2 or is that apples and oranges? If I remember correctly there is a hole in the tranny bellhousing for the CPS, I'm guessing I will need to run a 4.0 flywheel rebalanced to a 4.2 or does the balancing not matter on this setup?
I'm assuming that the alternator will need to be swapped as well.
Fuel pump wise can I mount an external pump on the frame rail or does it have to be in the tank.
Anything else I might have overlooked? I'm sure I will have more questions.
Thanks for the help!
Will the 'ECU' be able to handle the extra 0.2L? Also, what all wiring will need to come out of the XJ in order for me to swap the fuel injection system over? I plan on running an AX-15 but the XJ that is donating the parts has the AW4, will this cause trouble or is the tranny on a different computer than the engine? Can I run the 4.0 distributor on the 4.2 or is that apples and oranges? If I remember correctly there is a hole in the tranny bellhousing for the CPS, I'm guessing I will need to run a 4.0 flywheel rebalanced to a 4.2 or does the balancing not matter on this setup?
I'm assuming that the alternator will need to be swapped as well.
Fuel pump wise can I mount an external pump on the frame rail or does it have to be in the tank.
Anything else I might have overlooked? I'm sure I will have more questions.
Thanks for the help!
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