9psi oil pressure at hot idle.

Discussion in 'V8 - Maintenance & Troubleshooting' started by 99sho-time, Sep 13, 2020.

  1. 99sho-time

    99sho-time SHO Member

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    I'm preparing to drop the pan i know that I have the correct rod bolts however ive seen some statement saying that when it comes to rod bearings I may need to find out the size from within the block? I have a pair of sealed power 4395A which is listed as fitting for the car by all the suppliers? Can anyone confirm this?
     
  2. gamefanatic

    gamefanatic SHO Member

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    As you are dealing with a wear item with tight tolerances, its always best to measure what you are starting with. You may have no wear at all or the journals may be within a larger or smaller tollerance. This is why they recommend measuring before you buy.
     
  3. 99sho-time

    99sho-time SHO Member

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    there would size differences between each journal? and you mean to measure the journal to determine what size bearing I need? I thought all cranks would be consistent.
     
  4. gamefanatic

    gamefanatic SHO Member

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    I am not an expert, but theorizing on tolerances. I know on Piston rings there are standard variances in tollerance. Normally you would find at least 3 sizes even if there is only one size (diameter) piston. Your bearings are the surface between the crank and the rods and either can be more or less.
    Thats just in theory.
    So its best to measure what you are starting with and determine your clearances before so you know you have fixed the problem.
     
  5. 99sho-time

    99sho-time SHO Member

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    I'm def not objecting to measuring. But all the book tells me is that there is one part number for the rod bearings and that's 6211. It does state where the rod journal fit codes are but I'm unsure if that's related to bearing size variations.
     
  6. 99sho-time

    99sho-time SHO Member

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    UPDATE : Oil pickup was filled with debris rod bearings are tight.
     
  7. SM105K

    SM105K Streetlight Grand Prix Champ/ IG @egocheckersho

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    Clean her up and keep us updated.
     
  8. EdgardoGValadez

    EdgardoGValadez SHOrts

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    Im hoping this is my issue too
     
  9. EdgardoGValadez

    EdgardoGValadez SHOrts

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    Whats the idling pressure suppose to be at a hot idle ??
     
  10. 99sho-time

    99sho-time SHO Member

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    Long story short i'm putting in new rod bearings will update. healthy motor is mid 20psi hot idle
     
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  11. EdgardoGValadez

    EdgardoGValadez SHOrts

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    How did you check rod bearings?
     
  12. EdgardoGValadez

    EdgardoGValadez SHOrts

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    Pm you
     
  13. 99sho-time

    99sho-time SHO Member

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    Alrighty, so new rod bearings are in. never heard the engine so quiet with straight 5w30.
    I learned a valuable lesson just because the rods do not have play up and down doesn't mean anything.
    cleaning, prepping and re-applying the oil pan annoyed me the most. Must be careful with the rtv as far away from the inner edge as possible.

    I didn't get the classic rod knock noise.. I got an odd clatter sound that went away when warm. i started getting weary when there were sounds when warmed-up and under light load sometimes a tick. these cars seem to be weird when it comes to exhibiting sounds that derive from issues.

    I haven't checked the oil pressure yet yes i know sacrilege. But i damaged the fittings on my guage trying to remove it hindsight is always 20/20 and i should of left it in. but ill report back all that i know is that i never heard it this quiet.

    it's pretty amazing how the counterweight on the crank slips right past the side of the piston skirt it's so tightly engineered.
     

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  14. EdgardoGValadez

    EdgardoGValadez SHOrts

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  15. EdgardoGValadez

    EdgardoGValadez SHOrts

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    What kind of bearings did you use ? Part #
     
  16. 99sho-time

    99sho-time SHO Member

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    sealed power 4395a it was tedious for me.
     
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  17. EdgardoGValadez

    EdgardoGValadez SHOrts

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    From autozone ?
     

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