Crank Pulley... another twist?
#1
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hey folks, I was talking to a buddy with a shop with and they were getting a baseline for a stock 997 GT3 on the dyno- guess what? Temps rocket up and they shut things down only to find the belt completely off and the pulley/bolt off too... This car was going to get some parts put on but was completely bone stock at the time and with a dual mass. Sigh
I'm still not convinced that the LWF theory is causing this as now it's the second _dual_ mass flywheel car I've heard of this happening to. I'm trying to get the build date and specs on it as well...
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hey folks, I was talking to a buddy with a shop with and they were getting a baseline for a stock 997 GT3 on the dyno- guess what? Temps rocket up and they shut things down only to find the belt completely off and the pulley/bolt off too... This car was going to get some parts put on but was completely bone stock at the time and with a dual mass. Sigh
I'm still not convinced that the LWF theory is causing this as now it's the second _dual_ mass flywheel car I've heard of this happening to. I'm trying to get the build date and specs on it as well...
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alex, you come up with some mod to fix these useless cars
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I seriously wonder if the torque spec was different early on or if indeed they just didn't torque them down to spec properly... or under-estimated. Hard to say but that now makes two _dual mass_ stock 997GT3s I know of and then one RS. We know there are some GT3s with LWFs too that had it happen.
For the 997GT3s, the "fix" (if this is even a fix) is to use the RS pulley, bolt and spacer/washer... oh and some loc-tite
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Trying to gather data to see if maybe it's just the "earlier" cars because the ones I know of were build at the end of 06 early 07... Maybe it was the winter-student-fill-in program
?
I seriously wonder if the torque spec was different early on or if indeed they just didn't torque them down to spec properly... or under-estimated. Hard to say but that now makes two _dual mass_ stock 997GT3s I know of and then one RS. We know there are some GT3s with LWFs too that had it happen.
For the 997GT3s, the "fix" (if this is even a fix) is to use the RS pulley, bolt and spacer/washer... oh and some loc-tite![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![banghead](https://rennlist.com/forums/graemlins/banghead.gif)
I seriously wonder if the torque spec was different early on or if indeed they just didn't torque them down to spec properly... or under-estimated. Hard to say but that now makes two _dual mass_ stock 997GT3s I know of and then one RS. We know there are some GT3s with LWFs too that had it happen.
For the 997GT3s, the "fix" (if this is even a fix) is to use the RS pulley, bolt and spacer/washer... oh and some loc-tite
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
maybe i should drive it more, blow it up, since it due to the bolt, i may get a free motor....
keep us posted. my RS is bone stock. should i have dealer chk torque. WHY PCNA got no TSB for this thing.
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Should be a TSB for this. Same with the RMS, which btw I saw and is _useless_. They need to install the 996 GT3/TT and 997TT seal which very rarely leak with the spring/ring in there instead of the POS 997 teflon one
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I'll put the LWF theory to the test shorltly on the RS... 14.5 pounds suddenly became 11.5 pounds
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I though they did this for the later cars (as of Nov 2007)?