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  1. #21
    MikeinNH
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    Yes | No

    1997 1.9L Z3 - all original...

    It's only got 50K miles on it, the hoses look and feel like new, though I've noticed there are some small cracks on the interior of the serpentine belt. Since it mostly sits in storage over the Winter, maybe I'll get the belts & hoses replaced in the Spring with a fresh oil change...


  2. #22
    Monolith
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    Replace the two cooling pipes

    One on the rear of the engine and the other on the driver's side of the engine. Those are the two weak points of the 1.9 cooling system.

  3. #23
    Robert Platt Bell
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    Some pictures


    Here are some pix of a cooling system overhaul on a 2.8 motor. I've done this twice, the second time took about an hour, I kid you not.

    http://rides.webshots.com/album/268145067ZsIVjD

    Link below to overhaul on the 3.0. A little different than the 2.8. The quick-connect hoses are an interesting animal.

    If your belt looks like this, it is time to replace it. This belt was about 100,000 miles and 8 years old.

    Good Luck!


  4. #24
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    Member No: 161294 NC02Z3 is an unknown quantity at this point NC02Z3's Avatar
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    Revived my old thread. Well, another year has passed and I did nothing. Instead of thinking about it and wondering, I just made an appointment to change all the hoses and the belts as well. I was due for the coolant service so the timing is perfect. 10 years is getting old for rubber and lengthy big trips are in our future, including a 5,000 miler. Tire manufacturers say 10 years is pushing it so why would this rubber be any different. If I was staying local all the time I guess I would feel different. Peace of mind for a few hundred dollars. Chump change in the grand scheme of ownership. Certainly not worth a tow or aggravation on a trip due to being stubborn.
    2002 Z3 3.0L Topaz Blue/Tan
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  5. #25
    Inner Circle Member Inner Circle Member
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    Inner Circle ©160 since: Apr 24, 2003 MinnMark is an unknown quantity at this point MinnMark's Avatar
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    I'm with ya! 11 years old this past March, and 90K miles, still have the original hoses, belts, water pump and thermostat. Getting ready to head down to SC for ZFest and am finally breaking down and changing the belts. LOL. All else looks good though.

    Many here say proactively changing out the water pump is the best idea.. but I just haven't "gotten around" to it, so maybe one of these days.
    '00 Z3 2.3 Oxford Green/Tan/Tan

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  6. #26
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    Member No: 21597 z3bigdaddy is an unknown quantity at this point z3bigdaddy's Avatar
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    Never lost a belt or hose, one thing I actually do change regularly, yet but I did blow up the tensioner at one in the morning in the middle of BFOregon... And just barely over 300k on it....
    <center><b>
    <a href=http://www.z3bigdaddy.com/>Z3BIGDADDYCOTCOM!</A>
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    Well this would be a sig if I was allowed to use html... *sigh*
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  7. #27
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    Member No: 18848 rwilli is an unknown quantity at this point rwilli's Avatar
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    Just last week my '00M wouldn't start. First thought was the battery....but only 2 years old. Ended up being the alternator....just before ZFest. Choice was for a 140 amp Bosch upgrade. Better now than somewhere on the road---just like last year with the thermo flange.
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  8. #28
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    Mark you are one away from your 1k post! Make it special bro!
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    <a href=http://www.z3bigdaddy.com/>Z3BIGDADDYCOTCOM!</A>
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    Well this would be a sig if I was allowed to use html... *sigh*
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  9. #29
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    OK, just got the Z3 back. The indy mechanic I use told me the belts were pretty dried out (noisy too) and it was smart to change them even after 40,000 or so miles. He thought all the hoses were still fine (no urgency to replace any) but all were changed along with the coolant just for preventative maintenance since we plan on keeping the car for many years still plus the big trip ahead. These were the 7 hoses replaced: 1) Upper radiator hose 2) lower radiator hose 3) connecting line hose 4) reservoir hose 5) heater hose 6) Aux water pump hose 7) engine inlet hose, plus all new clamps. All set to go again.
    2002 Z3 3.0L Topaz Blue/Tan
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