MAGK944

Good point, replaced all the rollers again and didn't notice anything wrong with the old studs, but I will take a closer look.

38927

robert has a very good point. However, that would suck if you already complained about the faulty belt, and it really wasnt the belt...lol

robert944h

The stud doesn't have to be much to cause this problem. That stud can be bought from Porsche and be replaced, but they are ususally a pain to come out.

JohanvdWalt

Now this is the kind of info you'll only find where a lot of owners are involved like here on rennlist.

It make sense and the chance of finding it by oneself is just about zero.

MAGK944

I checked the old stud against a new one and it looks ok, so that wasn't the problem here. However I can see that if the stud was even slightly bent it would cause issues, but with that type of missalignment I would expect some wear or fraying at the edges of the belt too. I have no wear whatsoever on the edges and the actual belt looks good, it was just the teeth in that small section that stripped.

I tried to see if I could dislodge other teeth in a different part of the belt, I used an old balance shaft roller and tried to strip the teeth on a bench using a lot of force, but they were firm. So I am still convinced it was a bad belt.

Micah

To recap, belts changed 12,500 miles (18 months) ago. Front seals, rollers, water pump changed at the same time. Belts were retensioned after 2000 miles, everything to the book by a competant mechanic.

I might have missed this, but did your mechanic pick up the parts to do the work or did he or she use parts that you brought them?

I knew of a similiar parts-failure situation years ago and posted on it to the forum (just search for Micah 944S). The one thing that saved my buddy was that a recognized mechanic (Bob Farmer, who also by sheer luck happens to not take $hit from anyone) had done the work with parts from his supplier (of umpteen years). It turned into a gigantic mess for Bob. He wound up giving Matt a full rebuild because it was the second catastrophic failure the vehicle had suffered (the first was on the way back from the POs house after my buddy had purchased it). He then went back to his parts supplier (SSF) with the faulty chain... and they wouldn't do anything about it. Farmer ate the cost of the rebuild. My buddy drove the car for another 30 or 40k and then sold 'er.

Although it might be more expensive, that is one benefit of having a mechanic work on your car with his or her parts - there's a better chance of you being covered if the worst happens. Good luck with getting something back from Porsche - as Lego said, it never hurts to try.

Micah