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Thread: 7age basic build

  1. #81
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    yeah i talked to an engin builder using the 4a pistons and 7a gasket = fail and bOOM

  2. #82
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    because of the compression issue like I mentioned or something else? Unfortunetly there is some debate about the true thickness of a 7afe gasket so I cant work out the exact compression ratio but I can tell you it will be well past 12:1 for a 20v silvertop head
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  3. #83
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    ^ Definitely 0.6mm, two-layer metal

    (I had one at one stage)

  4. #84
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    hey sambo... and anyone else looking....

    i have a pretty healthy 20v currently running a motec. am i right in thinking i use the topend as is, silver pistons, then the stock 7a bottom?

    just shooting ducks right now but looking for projects to keep me busy ocver the rest of the year
    RIP Carly - a smile to light the world.
    06/07/2011

  5. #85
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    I don't think so just use the top end as is with ecu and all 7a bottem end with small port pistons. thats my thinking its the pistons that rase comp to a happy level. you do need to get the small port pistons matched to the 7a rods but that fuck all

  6. #86
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    ninja: I have to think about it but I would think the dome on a smallport piston is pretty simular to a 20v.


    fanta: you need to do the following:

    - use a stock 20v gasket

    - only run 98 (or higher) octane fuel

    - most importantly get it retuned and dont drive it there to do that!

    once you do that it should work well
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

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  7. #87
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    yeah she only swallows premium.. worthwhile you think? or head forced?
    RIP Carly - a smile to light the world.
    06/07/2011

  8. #88
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    too hard to answer, if you want big range range torque then go for it
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

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  9. #89
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    yeah 6 of one half a dozen of another?

    ill rephrase... worthwhile learning experiance for someone of limited experiance?
    RIP Carly - a smile to light the world.
    06/07/2011

  10. #90
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    if you think you can tear down an engine, put it back together and make it run then yes go for it, I will.

    Also can someone tell me how to take pressed pins out again? dont I have to heat them up to 80 or something?
    My website: SQ Engineering - 4AGE and 3SGE upgrade/replacement parts

    - SQ Engineering on facebook -

    Please e-mail to contact me instead of sending a private message on here.

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