takin out pistons from the bottom of engine

Posted by Vancho, Nov 4, 2011

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  1. Vancho

    Vancho Proven Member

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    Hey guys, has anyone ever tooken out the pistons from the bottom of the block? If the crank is out can they be removed and put back in? I don't want to take off the head, but it there is no other way I will, just asking tho, might save me some time, thanks
     

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  2. 91 TSi GP

    91 TSi GP Proven Member

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    You'll have to take the head off. The pistons wont clear, and plus putting them back in would almost be impossible even if they did come out
     
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  3. bryanwheat

    bryanwheat DSM Wiseman

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    Columbia, Missouri
    As stated, it isn't going to happen, there is casting in the way.
     
  4. BogusSVO

    BogusSVO Proven Member

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    The main webbing of the crank is in the way, no way to get them out.
    Even if you could, when you wanted to put them back in... how would you get the ring compressor up in there?

    Pull the head.
     
  5. Vancho

    Vancho Proven Member

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    spokane, Washington
    Alright, I will do what I have to do, just needed to know if it was possible, thanks
     
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  6. spyder1219

    spyder1219 Proven Member

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    This might be okay if it was higher compression pistons from a junked car to be reinstalled from the TOP into another car, but then again i don't have a spare Evo motor to check for under-removal.
     
  7. BogusSVO

    BogusSVO Proven Member

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    spyder.... I can not think of a single engine, 4cyl, V6, L6 or V8 that you can pull the pistons out from the crank side of the block

    The crank/ main webbing is in the way on all of them, yes you may get a bit of the piston to slide out from the bottom, but then it will catch on the main webbing.

    But I dont know much either, I have only tore apart 5000? 6000? who know how many engines in my life......
     
  8. XiKeiyaZI

    XiKeiyaZI Supporting Member

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    Baby numbers. You have much to learn. :p

    Good info on the webbing. Just adding another chirp in there - Pull the head. Check the cylinder walls while you're there. It's likely time for a timing belt and head gasket change anyhow.
     
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  9. bryanwheat

    bryanwheat DSM Wiseman

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    Columbia, Missouri
    IF you spun the rod bearing than the rod will have to come out and be machined. You could theoretically pull the crank if you removed the transmission, flex plate, rear seal retainer, oil pump and oil pan. Being that the pistons and rods need to come out you just need to go ahead and pull the whole engine.
     
  10. jrohner

    jrohner Proven Member

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    I can get the head off my car in 45 minutes, I don't really think it's a big deal.
     
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    1991 Mitsubishi Eclipse GSX

    11.415 @ 119.59 MPH
    1998 Mitsubishi Eclipse GSX

    414 whp   459 lb/ft
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