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Thread: help Identifying what motor I have

  1. #11
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    Where 4agze the only 4a's with a knock sensor?

  2. #12
    Member the witzl's Avatar
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    no - smallport 4age's also have knock sensors, as do 20Vs i believe.


    The only way you will tell what you have is to do compression test and report back with results..... measure the depth from cam covers to the top of piston 1 at TDC (with spark plug removed), and then compare that to the same measurement on a KNOWN smallport 4age
    KE70 Turbo 18R-G - Project Skid Car

  3. #13
    Junior Member Dexter's Avatar
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    Thanks guys I'll check it this weekend and report back

  4. #14
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    Jaycar have mini usb camera right now for $40 if you absolutely want to know what's inside, good for checking the condition of second hand engines too apparently.
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

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  5. #15
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    damn straight it is, has LED illumination and everything.... we also have one for around $169 which has its own screen, so you dont need to have it connected to a laptop.
    KE70 Turbo 18R-G - Project Skid Car

  6. #16
    Veteran timbo's Avatar
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    If it has the breather from the rocker cover then it is a bigport head, smallports all have one on the back of the head.

  7. #17
    Junior Member Dexter's Avatar
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    Well it's sounds like what I was told by the previous owner.

    4agze bottom , big port heard and ze cams .

    But I'll go and get that camera from jaycar and have a look .

    What rpm does the charger stop at on a ze ?

  8. #18
    Junior Member Dexter's Avatar
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    Ok so I thought I would update what I have found out so far.

    My pistons look to have a slight dish on them with the valve cut outs .

    All I can see is C D stamped on them if that is any help finding out wether there ge or ze

  9. #19
    Senior Member s13 james's Avatar
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    rookie as hell,but wouldnt that mean they are prob ze pistons?

  10. #20
    Junior Member Dexter's Avatar
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    Haha yes I'm a rookie. Im a Nissan man but thought I needed a change

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