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Thread: How often do RRC's need head gaskets replaced

  1. #1
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    Default How often do RRC's need head gaskets replaced

    So I'm in the market for a RRC and I'm noticing that a lot of RRC's will have high mileage but no documented history of having a head gasket changed. Seems like they might retain their head gaskets a bit more reliably than a Discovery maybe? Just curious what everyone else's experience has been.
    02 Tacoma X-cab 4x4 5spd - sold
    2000 Land Rover Disco II
    1986 Land Rover Defender - sold

  2. #2
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    Never really. The problem with head gasket failures did not start until the mid to late 90s. I never recall anyone having head gasket failures until those models started to show up.

  3. #3
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    Quote Originally Posted by Red90 View Post
    Never really. The problem with head gasket failures did not start until the mid to late 90s. I never recall anyone having head gasket failures until those models started to show up.
    True. The earlier vehicles could probably benefit from a head gasket change every 150K or so. But many over that still run. The early Rover V8 is a pretty resilient motor.
    "The most unreliable car in the world is the most reliable car in the world." -Jeremy Clarkson

    "Adventure starts when everything goes wrong." -Yvon Chouinard


    Toyota Tacoma DC 4x4 TRD (2015)

  4. #4
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    usually immediately after they overheat and there are several reasons for that.
    One of the plastic plugs in the radiator spontaneously disintegrates (change them to brass ones).
    Bad water pump (frequent culprit)
    Lower half of radiator plugs up due to transfer of crud from the block into the radiator - they usually need to be cleaned out or replaced around 110K miles.

    I've known of Rover V-8's that go past the 300,000 mile mark with regular and frequent oil changes and other maintenance.
    The cam usually wears out around 350K

  5. #5
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    The timing chain, gear and cam should be changed by 100000 Miles. Putting in proper ones and using suitable oil helps life.

  6. #6
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    My 1990 lasted for 23 years and 130k miles before needing replacement. The previous owner’s obvious lack of maintenance work probably contributed to that.
    2011 Tacoma DCSB
    1990 RRC

  7. #7
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    Reasonable maintenance for such a venerable motor in my view. . .
    "The most unreliable car in the world is the most reliable car in the world." -Jeremy Clarkson

    "Adventure starts when everything goes wrong." -Yvon Chouinard


    Toyota Tacoma DC 4x4 TRD (2015)

  8. #8
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    Is the 3.9 more reliable than the 4.2 or vice versa? Or are they about the same?

  9. #9
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    Quote Originally Posted by Cobra_R View Post
    Is the 3.9 more reliable than the 4.2 or vice versa? Or are they about the same?
    Maintenance history aside, the 3.9 and 4.2 are about equal. The 3.5 (87 and 88 in America) is the most reliable of all.
    "The most unreliable car in the world is the most reliable car in the world." -Jeremy Clarkson

    "Adventure starts when everything goes wrong." -Yvon Chouinard


    Toyota Tacoma DC 4x4 TRD (2015)

  10. #10
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    Hm, interesting; I didn't know that. The 3.5 is carbureted right? All these motors are based off the same Buick platform correct?
    02 Tacoma X-cab 4x4 5spd - sold
    2000 Land Rover Disco II
    1986 Land Rover Defender - sold

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