1.4 MPi vs 1.4 Carb
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Thread: 1.4 MPi vs 1.4 Carb

  1. #1
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    1.4 MPi vs 1.4 Carb

    What are the performance specs of these two engines?

    thanks,
    mark

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    click my engine sheet here

    the engines you are looking at are 14NV (carb engine) and C14SE (1.4 multipoint)

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    Thanks oddball.

    Any idea of 0-60 for both?

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    what, just the engine lmao pretty quick i would imagine.

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    Originally posted by 0ddball
    what, just the engine lmao pretty quick i would imagine.
    (I intend for them to be in the car whilst trying to do 60mph - if tahts at all possible!)

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    just chuck the engines off a bridge and see which ones hit the bottom first...

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    well if you tell us what car...

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    Mk2 Astra 1.4 Carb and Mk3 Astra 1.4 MPi

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    well the mk3 is 12 seconds, the mk2 somewhere between 11 and 12

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    Originally posted by 0ddball
    well the mk3 is 12 seconds, the mk2 somewhere between 11 and 12
    stripped a mk2 astra out plus a weber carb will get you into 10 second mark if somewhere in the 9's (im sure its quicker if u get ur engine and timing right)
    Owns a white Mk3 turbo diesel with more stopping power then engine power..... boosting 0.9bar, Now De-catted!!

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    is the mpi head in an astra si the same as the one in a nova sri?? What gains could be expected from using this head and a webber 32/34 on a 1.4nv engine??

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    The head is the same on the Nova and Astra 1.4 MPi engines, yes. Pretty sure the best head to use on the 14NV engine is either a 1.2 (early carb model) head or a 1.3 (complete with matching inlet manifold), as these ones apparently flowed better than the standard C14SE head anyway

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    I know the 1.2 head is good, but im contemplating using the mpi head because it gives a better c/r and has larger valves. When insurance comes down, throttle bodies, cam and manifold etc will all come together with the aim of 130hp and less weight, better distribution than a valver

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    The C14SE head on it's own will lower the 14NV CR. You'll need the SE pistons too. The NV/NZ had a CR of 9.4:1, whereas the SE was 10:1 for earlier models with a dizzy and 9.8:1 for later models with DIS

  16. #15
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    Originally posted by Kieran
    The head is the same on the Nova and Astra 1.4 MPi engines, yes. Pretty sure the best head to use on the 14NV engine is either a 1.2 (early carb model) head or a 1.3 (complete with matching inlet manifold), as these ones apparently flowed better than the standard C14SE head anyway
    no the 1.4 mpi (C14SE) head is the best of the bunch. yes the 1.3 (13S) carb head is better than the 1.4 (14NV) carb head.

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    so what do I do, mpi head skimmed for c/r or change whole engine to get pistons too?

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    Originally posted by 0ddball
    no the 1.4 mpi (C14SE) head is the best of the bunch. yes the 1.3 (13S) carb head is better than the 1.4 (14NV) carb head.
    Depends on whether he plans on doing any work on it though doesn't it? As standard, the 14SE head is restricted due to the usual emissions reasons. The people in the rallying department reckon the earlier 1.2/3 heads were the best for "standard" flow.
    PaulW on the boards said once that even when modified, the SE head is only slightly better than the standard 1.2/3 heads.

  19. #18
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    Originally posted by alistairolsen
    so what do I do, mpi head skimmed for c/r or change whole engine to get pistons too?
    I'd say you'd be better off tracking down an entire 1.4MPi engine, if you can

  20. #19
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    Is there really any point. initially it will run a single carb cos I wont be telling my insurance company about it. eventually tho I want to run a throttle body set up with an entirely new ecu so I sther any need to get the whole engine if im gonna strip the injection off it and whack a carb back on??????

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