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924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
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View Poll Results: What was the status of the belt?
Official Tool used within last 30k miles
11
19.30%
Kricket tool used within last 30k miles
6
10.53%
Other technique used within last 30k miles
10
17.54%
Belt not tensioned within last 30k miles
2
3.51%
Belt history unknown
18
31.58%
Mechanical failure (stud, etc.) caused failure
10
17.54%
Voters: 57. You may not vote on this poll

T-Belt Failure Poll

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Old 02-19-2004, 08:58 PM
  #1  
Tom M'Guinn

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Default T-Belt Failure Poll

For those of you who have had an actual timing belt failure, please tell us the circumstances.
Old 02-19-2004, 09:11 PM
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sharky47
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No provision for total mechanic failure, my case. I just didn't put it together properly.
Old 02-19-2004, 09:20 PM
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Tom M'Guinn

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Hmmm... I guess that belongs in the owner/mechanic failure poll rather than the t-belt poll.
Old 02-19-2004, 09:25 PM
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sharky47
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Well, it was a T-belt failure, just owner induced.
Old 02-19-2004, 09:25 PM
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ErichCS
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I actually have a funny story i just remembered about my car. When i bought the car from the PO he gave me this story about the timing belt, at the time i had no idea what he was talking about.

But here's the story, he bought the car new, and drove it daily. While it was still covered under warranty immediately after or around 30K miles the factory tensioned belt snapped. The entire top of the engine needed a rebuild and porsche/dealer apparently paid for it!

After that he religiously changed the belts, and so have i!

-Erich
Old 02-20-2004, 12:00 AM
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bloodraven
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mine was put in right before i bought it last year (almost a year now) and was tensioned a few months after...
Old 02-20-2004, 12:15 AM
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Yabo
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looks like the official tool isnt a safe one... :P
Old 02-20-2004, 12:23 AM
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"previous owner"
Old 02-20-2004, 10:23 PM
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Maybe it is just the law of averages, since so many people use the official tool. Interesting that there are no reported failures with the Kriket.
Old 02-21-2004, 04:41 PM
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There must be more than 9 of you with T-belt wows, no?
Old 02-21-2004, 05:44 PM
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Baron009
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Mine hasn't broken, but I am a little worried since I really am not sure when it was done last.

All I know is my tbelt was replaced about two years ago... sorta vague. I have proof that the work was done, but the odo reading is missing.

I have about 130 000km on the odometer now. I dunno, I think I'll take my chances and wait till maybe 135-140k then Ill change it. I haven't really made up my mind. I'm torn between playing it safe and saving money in the short term.

Actually maybe I can phone up the mech that did the tbelt and stuff and see if they have the odo reading on file or something? You think that they would have that info even after a couple years?
Old 02-21-2004, 07:46 PM
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Baron,

Notice that "belt history unknown" is by far the leader so far.
Old 02-22-2004, 02:55 PM
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seb928s
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Timing belt tensioner went without signs of wear on it. It blew the bearings out lost tension and there went my valves. That was the year of 3 different timing belts lol
Old 08-31-2009, 08:56 PM
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88Silver924S
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Default Timing belt age vs miles; inspection

I go by two sometimes conflicting philosophies: "A stitch in time saves nine" (= preventitive maintenance is good) and "If it ain't broke, don't fix it" (or as they caution doctors, First do no Harm). So I am looking at a 6 year old timing belt with less than 10,000 miles on it (mainly a fair weather car). Everything looks pristine with just normal mileage related wear, no "age" related damage (cracking, dryness, etc.). The seals do not leak and the engine runs fine (total mileage = 59,000). The question is 1) Has anyone experienced age related failure of a belt that looks and feels/flexes great? I am inclined to just keep inspecting and cleaning, checking tension/retensioning.
Old 08-31-2009, 09:06 PM
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Originally Posted by 88Silver924S
I go by two sometimes conflicting philosophies: "A stitch in time saves nine" (= preventitive maintenance is good) and "If it ain't broke, don't fix it" (or as they caution doctors, First do no Harm). So I am looking at a 6 year old timing belt with less than 10,000 miles on it (mainly a fair weather car). Everything looks pristine with just normal mileage related wear, no "age" related damage (cracking, dryness, etc.). The seals do not leak and the engine runs fine (total mileage = 59,000). The question is 1) Has anyone experienced age related failure of a belt that looks and feels/flexes great? I am inclined to just keep inspecting and cleaning, checking tension/retensioning.
I would change it out of piece of mind, but that's just me. A 6 year old belt is a 6 year old belt is a 6 year old belt. And if the timing belt breaks, other things will break...


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