new-to-me HZJ-80: making it strong again?

Discussion in 'Diesel Tech / 24 volts' started by drexx, Jun 14, 2005.

  1. drexx

    drexx

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    14Jun2005 (UTC +8)

    In about 48 hours or so, I am excited to take into my possession a 1994 HZJ-80L :) with the H150F 5-speed transmission and HF1A part-time 4wd. With it's age and obvious signs of living a not-very-comfortable but not exactly harsh life either, here're my list of things I should do to bring it back to its old glory:
    1. check engine compression
    2. change ALL fluids: diff oil, transfer case oil, transmission oil, engine oil, power steering fluid, and brake fluid.
    3. go through the Toyota 160-point checklist, like in http://www.toyota.com/html/tcuv/inspection.html
    4. Re-pack wheel bearings
    5. have the injectors serviced
    6. put in a 2.5" suspension lift and respectable mud tyres

    Question: What else should I watch out for? I want that old engine and drivetrain to be reliable again and be able to take in the Safari turbo-intercooler system.
    Question: Are the IPF Inserts from ARB a direct replacement for the HZJ-80's 4-headlamps? Are they good, tough, and bright?

    I believe this vehicle was originally purchased via Toyota Gibraltar (http://ecom.toyota-gib.com) for it has the vehicle code of HZJ80L-GCMRS.
     
  2. Stone

    Stone Moderator

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    Drexx: How many kms on the clock? There was talk a while back about the big end bearing in the 1HD-T, and how some of those have failed. I wonder what it's like on the 1HZ, and if it's worth replacing that too while you're elbow deep in there?
     
  3. NorCalDoug

    NorCalDoug problems solved daily...

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    Deep water and/or mud :flipoff2:
     
  4. beanz2

    beanz2 Moderator

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    Wow, barn doors world-spec 80 series, huh? Nice!

    Be sure to replace the timing belt if there are no signs of it being replaced recently. Every 100,000kms IIRC. How many kms on the odometer?

    Dave
     
  5. Red Herring

    Red Herring

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    HZJ=Diesel...It is probably gear driven.
     
  6. beanz2

    beanz2 Moderator

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    Ummm, no . . .
    :)

    Dave
    1HZ.JPG
     
  7. Radd Cruisers

    Radd Cruisers

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    NICCCCE.................


    Prolly could flush the coolant with a good product, the coolant in most vehicles along with brake fluid is the most ignored part.

    Diffs, transfercase and tranny fluids rate right up thier.

    Depending on miles and age, you could look at the timing belt, water pump(cheap piece of mind).

    We had one 1HZ come through and leak diesel thorugh the top of the pump, my guess is it was a engine that sat idle for many months even a year.

    Left or right hand drive????

    Rob
     
  8. beanz2

    beanz2 Moderator

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    LHD
     
  9. Stone

    Stone Moderator

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    The B series and H series deisels had timing gears...but the later ones had belts...as shown in Dave's pic.
     
  10. Red Herring

    Red Herring

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    Ahhh... thanks for the education! :cheers:
     
  11. Eric Winkworth

    Eric Winkworth

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    which is more reliable?
     
  12. lshobie

    lshobie

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  13. crushers

    crushers post ho

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    if you do the rutine maintaince then they are both reliable. if you neglect maintaining your engine then gears are more reliable.
     
  14. lshobie

    lshobie

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    Exactly
     
  15. Landpimp

    Landpimp GOLD Star

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    yes they are and they are a great light, i run them(the 7" round version) in all my cruisers that can take them.

    but is the 80 RHD or LHD? becuase IPF only makes the rectangualr H-4s with a RHD beam pattern


    anbd how bout some pics? :)

     
  16. harveya

    harveya

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    H series engine has gears and a belt. Belt drives the camshaft from the fuel pump. Fuel pump is gear driven from the crankshaft.

    Takes about 20 minutes to change the timing belt so it's worth doing anyway - however if you have A/C then take off the A/C belt idler pulley as it makes access to the belt tension idler easier when you need to pull it back to refit the belt.

    Part time transfer case is pretty reliable. Diffs can get a bit noisy - mine are on my HDJ80 but they work fine. Birfield (CV) joints get a bit noisy and may require stripping and re-greasing as will the front wheel bearings. Rear wheel bearings in the HZJ I think are semi floating type so should be sealed for life, only touch them if they are broke. Front axle oil seals will most likely need work.

    Front exhaust down pipe is a bit fragile on the flexi joint (if it has one, not sure on the 1HZ engine without the Turbo.

    I think the 1HZ was free from Big end problems, they only affect some 1HDT and 1HD-FT engines (12V and 24V turbo engines).

    Apart from that you have got yourself a motor that will take a lot of abuse and not give you any grief
     
  17. cruiseruser

    cruiseruser

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    Hey Andy, I wished you lived down the street from me! Look forward to reading more of your posts. Do you have diff locks on your cruiser? On my 96 80 they have not been engaging. Any thoughts? Or if anyone else remembers some good posts to point me towards. Take care, Ryan.
     
  18. dieseldog

    dieseldog She idles just fine . . .

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    The 1KZ-T, 1PZ, & 1HZ family of engines all use the same valve adjusting shims and utilize a rubber timing belt. It's a VERY reliable system and is not difficult to adjust valves or replace the timing belt. I've never heard a bad thing about 1HZ engines. Congrats on your new baby drexx!
     
  19. Greg_B

    Greg_B

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    And the 1HD-T.

    gb
     
  20. dieseldog

    dieseldog She idles just fine . . .

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    True dat, Greg.
     
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