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    1. Member blkpain1.8t's Avatar
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      '03 GTI 1.8T
      01-28-2008 02:00 PM #1
      Alright so for all the neigh-sayers that don't believe a timing belt/water pump change should be done before 80k miles...here's what mine looks like after 69,120 miles:

      I pulled the pump out of the block and the impeller literally crumbled in one spot in my hand. The plastic is extremely brittle which was quite an eye-opener. I can't believe I even considered stretching this job out to 80k.
      If you are considering putting this off past about 70k miles I recommend rethinking that. Granted a failing water pump might not be catastrophic to your motor, but plastic impeller pieces probably aren't a good addition to the cooling system.

    2. Member
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      2009 Tiguan-S, 2003 Jetta 1.8t GT28RS
      01-28-2008 02:03 PM #2
      My water pump shat the bed at like 35k miles
      Howto's, info, etc:
      http://www.izvw.com

    3. Member Fastvolks's Avatar
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      MK4 & MK6 GTI • 1986 Audi 4000CS Quattro
      01-28-2008 02:55 PM #3
      That's what my water pump was like @ 62K.

    4. 01-28-2008 03:00 PM #4
      Changed mine at 112k and the water pump was good as new I think this might have to do with the style of driving the engine is subjected to. Constant heat cycling of short trips is likely to hurt the plastic. Mine sees mainly longer highway trips.

    5. 01-28-2008 03:48 PM #5
      Quote, originally posted by veedubwolfsburg »
      Changed mine at 112k and the water pump was good as new I think this might have to do with the style of driving the engine is subjected to. Constant heat cycling of short trips is likely to hurt the plastic. Mine sees mainly longer highway trips.

      Me too, I'm right there with ya. I've got 90k on my original belt/water pump and I'm taking it to 100k with little worry

    6. Member
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      01-28-2008 03:50 PM #6
      You're just kinda lucky and I was very unlucky. I have friends that have a lot more miles than I did, certainly 35k is not normal! Doh!
      Howto's, info, etc:
      http://www.izvw.com

    7. 01-28-2008 04:29 PM #7
      APR shop told me Timing belt should def be changed before new turbo install ( 93k on car)......change of plans...

    8. 01-28-2008 04:31 PM #8
      I'll be getting mine done at 40k, 35k right now

    9. Member Fastvolks's Avatar
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      MK4 & MK6 GTI • 1986 Audi 4000CS Quattro
      01-28-2008 06:18 PM #9
      I think your asking for it going past 70-75K.

    10. Member blkpain1.8t's Avatar
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      '03 GTI 1.8T
      01-28-2008 06:44 PM #10
      Prior to doing this job I would have thought you to be wrong...but after seeing what was impending with my own car, I have to agree with you.
      For those that have made it to the 100k's...congratulations. You are the lucky ones. For those of you who are not there yet, don't push your luck.

    11. 01-28-2008 08:48 PM #11
      I just did mine at 99K the works, and I could flick the impeller apart with my fingernail. The belt was also stretched and skinny, no fear of tearing, but ive heard the teeth can actually come off in sections of 10-20. Just do it at 80K and forget about it.

    12. Member TmoeJ747's Avatar
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      3076r 01 jetta, 04 GLI parts car
      01-28-2008 09:08 PM #12
      i bought my car with 134k off of a guy with an original timing belt where about 10 teeth sheered off. the guy told me he didnt think it was necessary to spend $1200 every 60k for maintainance. he figured that if the belt was still intact, then it was good. haha. so i ended up with a pretty sweet car for cheap. with a new engine and all new timing components, i plan on doing the belt and pump again after another 40k. i wont chance it- the new engine cost me a pretty penny

    13. 01-28-2008 11:21 PM #13
      Here's a question. If I replace the water pump with a metal impeller pump and new timing belt, how long could I wait until the next change?
      Say first change at 70K, could i wait until I hit 170K miles on the car before changing the belt and pump again?
      What's the consensus here on this?
      Thanks

    14. 01-28-2008 11:35 PM #14
      Quote, originally posted by 2002JettaMike »
      Here's a question. If I replace the water pump with a metal impeller pump and new timing belt, how long could I wait until the next change?
      Say first change at 70K, could i wait until I hit 170K miles on the car before changing the belt and pump again?
      What's the consensus here on this?
      Thanks

      Well from my experience, with me presenting proper heat cycles to my engine, I've been able to take my original belt/pump to 91k. So when I do switch everything out with a metal pump at 100k, I'll have no problem having this be the last TB job that I do to the car. I'll have 200k on it (if i still have it) before i go and change it out again.

    15. 01-29-2008 01:24 AM #15
      Quote, originally posted by 2002JettaMike »
      Say first change at 70K, could i wait until I hit 170K miles on the car before changing the belt and pump again?
      Thanks

      Once you change the pump to a metal one, there's no reason to replace it again as the metal impeller should last indefinitely (Unless you run into say bearing problems with the pump.) As for the timing belt, stick to 60K change intervals .

    16. 01-29-2008 02:39 AM #16
      My 2.0L's waterpump died at 90000km (56000miles). I'm currently in the process of changing my 1.8T's timing belt and waterpump at 86000km (~54000miles)

    17. Member loxxrider's Avatar
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      01-29-2008 03:59 AM #17
      My first wp failed at aroung 55k. My next one failed at around 95k...the car sees nothing but highway use most of the time..so I don't think that is a good explanation.

    18. 01-29-2008 09:37 AM #18
      Quote, originally posted by loxxrider »
      My first wp failed at aroung 55k. My next one failed at around 95k...the car sees nothing but highway use most of the time..so I don't think that is a good explanation.

      True, that does contradict my point. But I guess the factor that is involved is that your VW was assembled in Mexico or PA, and my Audi was made and assembled in Germany?

    19. Junior Member
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      2001 VW Jetta 1.8T daily driver
      01-29-2008 11:28 AM #19
      My waterpump just failed at 126K miles. It happened after over reving the engine to 7k rpm. I am about 2 hours into the timing belt/water pump job right now. One question I have that I didn't see an answer for on the DIY timing belt thread is regarding the timing belt tensioner and pulley. The kits come with the tensioner and pulley. Do I have to change them? If I am planning to change the timing belt and water pump, can I use the existing tensioner and pulley? I didn't buy a new tensioner or pulley and just bought the belt and pump because I am hurting for cash and just need this car back on the road.

    20. Member Issam Abed's Avatar
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      91 Audi 80 2.0T
      01-29-2008 11:39 AM #20
      Quote, originally posted by blkpain1.8t »
      Alright so for all the neigh-sayers that don't believe a timing belt/water pump change should be done before 80k miles...here's what mine looks like after 69,120 miles

      Japanese manufacturers always recommend changing the Timing belt @ 100,000km intervals.Same timing belt quality used by German manufacturers.
      I dont have a single client that I changed there timing belt @ 100,000 miles.It was always around the 62 XXX miles and I made sure to change the water pump @ the same time.Sometimes I even go as far as to change the camshaft & crankshaft seal but that crankshaft bolt is not for the weak of heart.

    21. 01-29-2008 11:42 AM #21
      Quote, originally posted by SlyTDI »
      My waterpump just failed at 126K miles. It happened after over reving the engine to 7k rpm. I am about 2 hours into the timing belt/water pump job right now. One question I have that I didn't see an answer for on the DIY timing belt thread is regarding the timing belt tensioner and pulley. The kits come with the tensioner and pulley. Do I have to change them? If I am planning to change the timing belt and water pump, can I use the existing tensioner and pulley? I didn't buy a new tensioner or pulley and just bought the belt and pump because I am hurting for cash and just need this car back on the road.

      You might be fine, but those older parts will hover in the back of your head whether or not they are going to hold up. I recommend when $ gets good again, get those replaced.

    22. 01-29-2008 11:51 AM #22
      Quote, originally posted by loxxrider »
      My first wp failed at aroung 55k. My next one failed at around 95k...the car sees nothing but highway use most of the time..so I don't think that is a good explanation.

      How did the second one fail? Was it also plastic?

    23. Member Fastvolks's Avatar
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      01-29-2008 12:18 PM #23
      Quote, originally posted by SlyTDI »
      My waterpump just failed at 126K miles. It happened after over reving the engine to 7k rpm. I am about 2 hours into the timing belt/water pump job right now. One question I have that I didn't see an answer for on the DIY timing belt thread is regarding the timing belt tensioner and pulley. The kits come with the tensioner and pulley. Do I have to change them? If I am planning to change the timing belt and water pump, can I use the existing tensioner and pulley? I didn't buy a new tensioner or pulley and just bought the belt and pump because I am hurting for cash and just need this car back on the road.

      The Tensioners are the problem area not so much the belt. When the tensioners seize and fail they cause the belt to break costing big $$$.

    24. Member loxxrider's Avatar
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      01-29-2008 06:18 PM #24
      Quote, originally posted by Gallep »
      True, that does contradict my point. But I guess the factor that is involved is that your VW was assembled in Mexico or PA, and my Audi was made and assembled in Germany?

      Haha maybe
      Quote, originally posted by veedubwolfsburg »
      How did the second one fail? Was it also plastic?

      Yes, it was also plastic...
      lol now its metal.

    25. 02-01-2008 05:04 AM #25
      my water pump looked the same at 90k miles. the plastic impellers are crap.
      i talked to two companies both refused to sell stock water pumps because they fail so often.

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