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  1. #1
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    Default cx engines

    hi all

    How much more desirable is the fuel injected 2.4 from a gti vs a carbed 2.4?

    Power, economy etc? is ti worth the swap?

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  2. #2
    1000+ Posts gerrypro's Avatar
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    There would be a great deal of wiring and plumbing modification to think about apart from the engine swap.
    What transmission do you intend to use?
    Of course there is a power gain but is it worth the time and trouble?
    Cheers Gerry

  3. #3
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    thats really the question. is the power gain worth it?

    what is the power increase?

  4. #4
    Fellow Frogger! IE23's Avatar
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    Have a look here

    Citroen CX data index


    Adrian

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    CX25 GTI Turbo series 1 1985
    DS23 IE Pallas 5sp 1974
    CX25ie Pallas Auto 1984 Parts
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    CX25ie Pallas Auto 1984

  5. #5
    1000+ Posts Greg C's Avatar
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    128BHP DIN for the 2400ie, 115BHP DIN for the carby 2400. Both my CX's have been injection but my Dad's was a carby. The injection motors idle very smoothly, have a bit more power, and maybe are a bit quieter but as Gerry said it is a lot of work wiring wise to fit one. If you have the complete donor cars wiring loom you might have an easier job.

    If you want to update a cx motor to injection it would probably be an equivalent amount of work to fit a Megasquirt system to the carby engine. You could use the inlet manifold and head from the injection motor and even though it is bit of work to program it you will end up with all the advantages of the original 2400ie with better environmental performance and better economy.
    Mine

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  6. #6
    skp
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    I have a 2400 Gti for sale… Save yourself the trouble of conversion!
    skp

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    Too many posts! JohnW's Avatar
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    Quote Originally Posted by skp View Post
    I have a 2400 Gti for sale… Save yourself the trouble of conversion!
    skp
    Now there's a good idea. Bad to put such temptation in people's minds.......
    JohnW

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    so no real benefit in conducting a swap from carb to injected even if the donor was cheap and accessible?

    do s1 gti's command any sort of premium? i fail to see the difference between them and a pallas in most regards?

  9. #9
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by benvv View Post
    so no real benefit in conducting a swap from carb to injected even if the donor was cheap and accessible?

    do s1 gti's command any sort of premium? i fail to see the difference between them and a pallas in most regards?
    You could try asking skp that question!
    JohnW

    Renault 4CV 1950 (R1062)
    Renault R8 1965 (R1130)
    Renault Scenic Series II 2005 (wife's)
    Renault Scenic Series II 2006 (daughter's)
    Renault Scenic Series II 2007 (mine)

    CitroŽn CX Pallas 1980 (moved on to new custodian)

    National Co-ordinator, Renault 4CV Register of Australia

  10. #10
    skp
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    If you are looking to increase the value of the car, then adding fuel injection may do that - but the effort would not be worthwhile.
    The plumbing / wiring of the Gti's injection system is not so bad, so the project is feasible.. Pity to waste it.. and it is a reliable system.
    The Gti's were more than just injected, 'tho. The roll bars were slightly stiffer, and the spheres had different damping rates.
    Not that you REALLY notice for 95% of driving.
    skp

  11. #11
    Real cars have hydraulics DoubleChevron's Avatar
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    I think a 30+ year old carby is going to be easier to upkeep than 30+ year old injections parts.... Where do you find injectors, AFMs, computers etc... these days if one expires ? If it was a GTi Turbo it would be worth the effort, I can't really see much of a gain given how much work it would be

    seeya,
    Shane L.
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  12. #12
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by DoubleChevron View Post
    I think a 30+ year old carby is going to be easier to upkeep than 30+ year old injections parts.... Where do you find injectors, AFMs, computers etc... these days if one expires ? If it was a GTi Turbo it would be worth the effort, I can't really see much of a gain given how much work it would be

    seeya,
    Shane L.
    And you can always modernise with a 123 ignition and get rid of points etc, or even just go "Hot Spark" to eliminate points and condenser. My 123 is about to go in after a wee delay. Its not as if the CX Weber is unreliable.
    JohnW

    Renault 4CV 1950 (R1062)
    Renault R8 1965 (R1130)
    Renault Scenic Series II 2005 (wife's)
    Renault Scenic Series II 2006 (daughter's)
    Renault Scenic Series II 2007 (mine)

    CitroŽn CX Pallas 1980 (moved on to new custodian)

    National Co-ordinator, Renault 4CV Register of Australia

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