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Timing Gear, V6 700 1989

posted by  jaydee on  Thu Apr 14 17:10 CST 2005
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last visit: Thu Oct 23 23:45 CST 2014
[RELATED]

I am going to reset the tappets this weekend on my daughter's '89 760 (V6 PRV), as they are getting a bit rattley. The car has 162,000 miles on it (26200km) and is a delight to own and drive.
Is it reasonable at this mielage to also replace the cam chain and adjuster, or can I expect them to hang in there for another few miles? She has just finished college (6 looooonng years) and is off into the world next week, and I want to make sure her car is not going to do anything catastrophic.
TIA
JD
Fort St John BC








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    Timing Gear, V6 700 1989

    posted by  rollei35guy on  Fri Apr 15 01:53 CST 2005
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    last visit: Fri Jun 15 19:22 CST 2012
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    Hi I have an '87 760 with the B280F with 250k+ miles.

    When you have the valve covers off you can check the condition of the timing chain. At least on the left hand side the tensioner is visible. It is only allowed to extend 8mm (or 4 notches) i think. From what I have read the lifespan of these chains is around 200k miles although I don't think i have read anything about failures.

    The last guy to do a valve adjustment (a few weeks ago) said the chains appeared to be in good shape. I plan on inspecting these myself this weekend.

    If you have not already done so I would replace all of the coolant hoses including the short ones connecting the water pump. I recently had 2 hoses and an o-ring (for the y-pipe under the intake manifold) fail on me. My new hobby is coolant hoses and o-rings along with throttle body cleaning.



    --
    Carter








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      Timing Gear, V6 700 1989

      posted by  rollei35guy on  Fri Apr 15 02:17 CST 2005
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      last visit: Fri Jun 15 19:22 CST 2012
      [RELATED]

      Here is a link to a blurb from the archives that a fellow wrote:

      http://brickboard.com/RWD/index.htm?id=924044

      Actually just a couple months ago. The timing chains are on my mind too with the mileage and the age. It would really ruin my day if I were to do all this work only to have the chains slip and trash the engine.

      (the novelty of driving my '71 145 wagon, nick named rusty-green, has worn off)
      --
      Carter







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