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seized v8?

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by ringfeder3, Apr 30, 2018.

  1. ringfeder3

    ringfeder3 Active Member

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    i bought a vs v8 ute that has a seized motor. i had planned to source a replacement but before i go down that track, i would be inteterested to know if the old one is at all salvagable. a local mechanic told me that the ute had never worked hard (odo shows 185k mileage) and that the previous owner dropped it off so that he could diagnose a thermo fan problem. the mechanic started the ute to let it idle up to operating temperature when there was a bang and everything stopped.... The owner picked it up and that was that. Anyway, i cannot turn the crank with a socket and bar but havent looked into things further. i have checked engine oil....dirty but no moisture or filings on dipstick. There does appear to be a fairly good oil leak from rear of motor which is still leaking after 4 months. when i turn ignition, starter motor clicks but wont turn motor (new battery). Ute was on dual fuel but i have removed gas lines, tank and mixer. i am not a mechanic but if the current motor can be saved, that would be my preference. any theories???
     
  2. ringfeder3

    ringfeder3 Active Member

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    And the original mechanic didnt have an opportunity to look at the motor...
     
  3. Wozza

    Wozza Well-Known Member

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    Its possible that something in the tranny/gearbox has let go and has locked up...prob the best bet is to remove the motor and gearbox and work from there..if its pooched it will need to be removed to replace, if not to bad repair and fix oil leaks is easier with the engine out....most times engine lock up due to oil loss will free up after they cool..
     
  4. immortality

    immortality Moderator Staff Member

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    Only way to know is the strip the engine and find the failure. Once you know that you can figure out the best cause of action.
     
  5. ringfeder3

    ringfeder3 Active Member

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    would a faulty transmission cause the motor to stop if it was idling in park?
     
  6. immortality

    immortality Moderator Staff Member

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    It may be possible but would most likely be a converter issue. Unbolt the converter from the flex plate to test.
     
    losh1971 likes this.
  7. ringfeder3

    ringfeder3 Active Member

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    righto. might give that a try. the previous owner said that there had been no engine symptoms leading up to it stopping. what would the large oil loss at the rear of the motor suggest?
     
  8. immortality

    immortality Moderator Staff Member

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    Loss of oil would suggest it's picked up/spun a bearing and locked up the crank.
     
  9. _R_J_K_

    _R_J_K_ Well-Known Member

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    Wouldn't be surprised if it was a severe rear main leak, the design of the seal on the 5L was not good.
     
  10. immortality

    immortality Moderator Staff Member

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    It was the standard seal design of the era, when re-building you can change it to a neo 2 piece type seal.
     
  11. Deuce

    Deuce Super Stock

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    What colour/smell is the oil?
    Maybe it is torque conv issue and its fluid leak from there?
    If trans pump locked up that would cause engine not to crank I think.
     
  12. BlackVXGTS

    BlackVXGTS Well-Known Member

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    I had a flexplate break after a Murcott High Performance session at Sandown Park Raceway in my 355 VS Calais. Broke at two of the three attachment places and jammed. Jack the car up, remove the dust cover between the engine and trans, and use a torch to see if anything is amiss. Oil leaks from the rear main are not uncommon on the Holden V8, but I wouldn't have thought it would still be leaking after four months.
     
  13. ringfeder3

    ringfeder3 Active Member

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    but would a trans lockup occur with a car idling in park?
     
  14. losh1971

    losh1971 Well-Known Member

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    Possible because the TC spins when the engine is running.
     
  15. woteva

    woteva NEED 4 SPEED

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    Coolant level and trans fluid looks OK?

    Won't be able to undo the TC bolts if the engine does not spin over. It will have to be a gearbox off job to check.

    I would be trying the easy stuff first like removing spark plugs to check for hydraulic lock and rocker covers and checking for dropped valve.
     
  16. VR38

    VR38 Well-Known Member

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    Pull the spark plugs and tell me what you see.
     
  17. ringfeder3

    ringfeder3 Active Member

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    ok. I will pull somw plugs later on and advise.
     
  18. gtrboyy

    gtrboyy Well-Known Member

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    5 litres usually wear out not often they seize unless something weird happens.

    Unbolt starter,take off dust cover...if you can eliminate starter or broken flexplate then it will be engine related.


    If had rear main leak + thermofan issue on a v8 which have clutchfan standard...I'd be wondering how many times it's been cooked or neglected...
     
  19. ringfeder3

    ringfeder3 Active Member

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    bit of an update....oil leak is trans fluid. would that support torque convertor or flex plate theory?
     
  20. ringfeder3

    ringfeder3 Active Member

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    fluid dripping from front of auto
     

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