88 Cherokee Piston Slap? Nope, Cracked Flexplate

Discussion in 'Quitters' Club' started by Focker, May 30, 2017.

  1. Jun 10, 2017
    wheelie

    wheelie beeg dummy Sponsor

    York, PA
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    Even from the factory? I suppose as nothing is as it used to be. I might add that the parts are designed for a stockish type vehicle so, adding big tires without properly adjusting gear ratios in the axles, pulling heavy trailers, etc., will take their toll on the stock parts over time and miles.

    I have no doubt as to the lesser quality of modern aftermarket replacement parts. I do not know if a quality HD aftermarket flex plate is available for these vehicles or not. It would be my choice if I had to make it.
     
  2. Jun 10, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

    Tri-Cities WA
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    I wonder if the hole lined up near one of the 4 bolt holes is for mating reference? Both plates have that same hole in the same spot.
     
  3. Jun 10, 2017
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

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    Shouldnt matter how the tc bolts to the flexplate. They should line up every 90 rotation.
     
  4. Jun 10, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    I was mentioning it because of what you said about starting the first bolt in a specific hole. Maybe I misunderstood your point?
     
  5. Jun 10, 2017
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

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    Sorry. IF there is one hole that has flat spots on it, kinda oval compared to others, start that one first. Looking at the pic of yours doesnt look like it matters
     
  6. Jun 10, 2017
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

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    Maybe one hole is smaller diameter so there is no play?
     
  7. Jun 12, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    I got the flexplate torqued to engine yesterday, but couldn't for the life of me get the transmission and engine together by myself. My son is coming over today and I expect to have it all wrapped up.
     
  8. Jun 12, 2017
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

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    [​IMG]
    Here's the one i pulled from a minivan today. You can see the oblonged starter hole on the bottom
     
  9. Jun 12, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    Sometimes I'm a real stoopid Focker. :oops:

    It helps to use the proper bolts when mating the transmission and engine together...I had the 2 top ones switched with the 2 lower ones. I'm just glad I figured it out before my son did.
     
  10. Jun 12, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    Gotcha.
     
  11. Jun 12, 2017
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

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    Glad im not the only mentally challenged one around here:D
     
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  12. Jun 12, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    Well, now we know there are at least 2 of you that are. :D
     
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  13. Jun 12, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    It's all back together and it passed a couple of successful test runs around the block.

    :D


    The only thing now is to address the new oil drip at the bellhousing. The lower inspection plate is missing and it appears to be leaking from torque converter side of things. I've read 2 possible causes...
    1) I didn't tighten the pan gasket down correctly. I think it's this because it didn't leak prior to disassembly.
    2) Rear main seal.
     
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  14. Jun 12, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    Good job! :)
     
  15. Jun 12, 2017
    mayday

    mayday Sponsor Sponsor

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  16. Jun 13, 2017
    Twin2

    Twin2 wasn't me Sponsor

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    so it wasn't engine knocking (y)
     
  17. Jun 13, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    Right...Awesome Possum
     
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  18. Jun 13, 2017
    73 cj5

    73 cj5 In Rust We Trust Sponsor

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    I was kinda hoping to see a 4.6 stroker build,,,,, Good Job anyhow (y)
     
  19. Jun 17, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    This is what I get for trying to reuse a gasket. Gasket failure during installation. :mad:
    [​IMG]

    It's better than having to replace the main seal tho. (y)
     
  20. Jun 17, 2017
    Focker

    Focker Rust Never Sleeps Staff Member Sponsor

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    Napa had a new gasket in stock! (y)

    I did it right this time...I prepared both surfaces better. I used RTV on the new gasket (engine side) and stuck it to the bottom of the block. I paid special attention to how the gasket fit on the rear crank area. I used a few screws hand tight to hold the gasket in place until the RTV was tacky enough to hold it on its own. I tightened down the screws in opposing patterns until all 100 were tight.

    No more leak!
     
    givemethewillys, 47v6, 75 DJ and 2 others like this.

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