4 liter replacing a 4.6

Discussion in 'Discovery' started by GuyMadison, Feb 22, 2018.

  1. GuyMadison

    GuyMadison Member

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    I found a 2003 4.6 disco that needs a new engine, looking around these engines are getting harder to find with "reasonable" milage.

    I found one but its a 4 liter engine and the price is right, it doesn't have the secondary air injection but I may be able to swap that all out.. but will the computer freak out with a 4 liter replacement on a 4.6 rig?

    Since these engines are getting harder to find any recommendations would be great as I intend to swap it out this summer and have some time.

    Thanks

    Guy
     
  2. joey

    joey Custom Rover Accessories Staff Member

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    The computer will not run the 4 liter. You would be better off dropping in something completely different, but even then you will spend a lot of money getting everything working. I have heard of people putting in diesels.
     
  3. GuyMadison

    GuyMadison Member

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    Thanks, I spent some time looking and its just too much effort at this point to do an engine swap. I have a 08 RRS also, the Jaguar motors are superior in performance and build quality at this point so I will probably move on to a LR3 / LR4 for my beater truck.
     

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