So I think my engine is toast.....
#16
11-16-2007 | 07:45 PM
Registered User
Joined: Oct 2004
Posts: 2,206
From: N Calif
Rep Power: 111
If so it would have to have been from the previous owner. He put 3800 miles on it and since then I have put 18k reasonably hard miles on it with no prior problems. I had the car up in Canada this past summer and was routinely averaging 120+MPH on rural highways for hours at a time and it ran great.
I would imagine that any issues relating to a mechanical over-rev from a miss-shift would have appeared long before I put that many miles on the car.
I would imagine that any issues relating to a mechanical over-rev from a miss-shift would have appeared long before I put that many miles on the car.
I think you have a clutch issue.
Isn't that a dual plate clutch?
Last edited by Gcalo; 11-16-2007 at 09:15 PM.
#24
11-19-2007 | 12:57 PM
Registered User
Joined: Oct 2007
Posts: 3
From: Dallas
Rep Power: 0
Welcome to the blown motor club Dave, I've already got jackets and membership cards. I'll be sure to get you one here pretty soon. I am the president, chairman, CEO, and founder of the group.....you can be vice president if you want. 
Seriously though, it is never a fun experience and I hope she gets back on the road soon. It should be a shorter repair that machining and rebuilding an RB26 here in the states.
Seriously though, it is never a fun experience and I hope she gets back on the road soon. It should be a shorter repair that machining and rebuilding an RB26 here in the states.
#26
11-19-2007 | 10:49 PM
Thread Starter
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Registered User
Joined: Feb 2005
Posts: 199
From: Texas
Rep Power: 27
I went up to the dealer today to swap loaners and so far all they have told me is that they are going to order a new engine and that once it arrived it should be two days to install it. I saw my car in the shop on a lift and the engine was still in the car. I asked what they thought the issue was and the service advisor said that they just take the engine out and send it to Porsche for them to diagnose the problem.
I was surprised to hear that they were going to order a new engine without even taking the other one out to look at it first. I guess they have a protocol they follow when this happens. She also didn't mention anything about it not being under warranty so I am going to assume it is all covered.
For the past few days I have been trying to think about what may have been the cause of the problem. I recall reading that the GT3s have a lighter/stronger crank, and that got me wondering.
As I said in a previous post I don’t abuse the car, but I also by no means baby it. On almost a daily basis I take it out late at night and do some spirited runs on the highways/onramps around town to de-stress from my day. There is a particular set of corners I always drive to when I am out on my “cruise”. Upon entry to the corners I blip down to second gear from third and keep the revs hovering around 4500-5000, and then midway through the S’s I find myself hovering at 6k, and at the end of the set I nail it to 7k for a straight shot onto the freeway. (All of this is on a fenced in portion of road with no oncoming traffic and complete visibility, and also late at night) The only reason I shift down to 2nd and keep the revs that high is so that I can have greater ability to steer the rear of the car using throttle inputs. I don’t have enough power in 3rd to effectively keep the rear in check in case it decides to step out unexpectedly.
That said though I wouldn’t be surprised if doing that on a routine basis, week after week, has put a strain on my crank. I imagine the heavy mass of the C2/C2S crank being spun at 6k rpm for an “extended” period (couple of seconds) may have been enough to weaken/break it. I have also noticed that some of the replies in this thread have indicated their crank was the source of their problem.
While admittedly I am jumping to conclusions before I know what the problem actually is, this experience has made me a bit paranoid to push the car. Prior to the 997 I drove an E46 M3 for four years and never had a problem using the same style of driving I just described. And that was an engine that revved to 8k. When I am just casually cruising I shift at 3k, it is only when going into “hot” corners that I keep the revs north of 4500. I am also very cautious to make sure the oil has fully warmed up before shifting north of 3k.
That is where things stand right now. They swapped me into a 5-speed Cayman as a loaner and I must say this car is a blast to drive!
Would it even be worth it to request that they order a refurbished GT3 motor instead of the C2 motor, and then ask them if I could pay the difference in cost?
I will keep everyone updated.
I was surprised to hear that they were going to order a new engine without even taking the other one out to look at it first. I guess they have a protocol they follow when this happens. She also didn't mention anything about it not being under warranty so I am going to assume it is all covered.
For the past few days I have been trying to think about what may have been the cause of the problem. I recall reading that the GT3s have a lighter/stronger crank, and that got me wondering.
As I said in a previous post I don’t abuse the car, but I also by no means baby it. On almost a daily basis I take it out late at night and do some spirited runs on the highways/onramps around town to de-stress from my day. There is a particular set of corners I always drive to when I am out on my “cruise”. Upon entry to the corners I blip down to second gear from third and keep the revs hovering around 4500-5000, and then midway through the S’s I find myself hovering at 6k, and at the end of the set I nail it to 7k for a straight shot onto the freeway. (All of this is on a fenced in portion of road with no oncoming traffic and complete visibility, and also late at night) The only reason I shift down to 2nd and keep the revs that high is so that I can have greater ability to steer the rear of the car using throttle inputs. I don’t have enough power in 3rd to effectively keep the rear in check in case it decides to step out unexpectedly.
That said though I wouldn’t be surprised if doing that on a routine basis, week after week, has put a strain on my crank. I imagine the heavy mass of the C2/C2S crank being spun at 6k rpm for an “extended” period (couple of seconds) may have been enough to weaken/break it. I have also noticed that some of the replies in this thread have indicated their crank was the source of their problem.
While admittedly I am jumping to conclusions before I know what the problem actually is, this experience has made me a bit paranoid to push the car. Prior to the 997 I drove an E46 M3 for four years and never had a problem using the same style of driving I just described. And that was an engine that revved to 8k. When I am just casually cruising I shift at 3k, it is only when going into “hot” corners that I keep the revs north of 4500. I am also very cautious to make sure the oil has fully warmed up before shifting north of 3k.
That is where things stand right now. They swapped me into a 5-speed Cayman as a loaner and I must say this car is a blast to drive!
Would it even be worth it to request that they order a refurbished GT3 motor instead of the C2 motor, and then ask them if I could pay the difference in cost?
I will keep everyone updated.
#27
11-19-2007 | 10:55 PM
Registered User
Joined: Aug 2006
Posts: 868
From: earth
Rep Power: 0
I went up to the dealer today to swap loaners and so far all they have told me is that they are going to order a new engine and that once it arrived it should be two days to install it. I saw my car in the shop on a lift and the engine was still in the car. I asked what they thought the issue was and the service advisor said that they just take the engine out and send it to Porsche for them to diagnose the problem.
I was surprised to hear that they were going to order a new engine without even taking the other one out to look at it first. I guess they have a protocol they follow when this happens. She also didn't mention anything about it not being under warranty so I am going to assume it is all covered.
For the past few days I have been trying to think about what may have been the cause of the problem. I recall reading that the GT3s have a lighter/stronger crank, and that got me wondering.
As I said in a previous post I don’t abuse the car, but I also by no means baby it. On almost a daily basis I take it out late at night and do some spirited runs on the highways/onramps around town to de-stress from my day. There is a particular set of corners I always drive to when I am out on my “cruise”. Upon entry to the corners I blip down to second gear from third and keep the revs hovering around 4500-5000, and then midway through the S’s I find myself hovering at 6k, and at the end of the set I nail it to 7k for a straight shot onto the freeway. (All of this is on a fenced in portion of road with no oncoming traffic and complete visibility, and also late at night) The only reason I shift down to 2nd and keep the revs that high is so that I can have greater ability to steer the rear of the car using throttle inputs. I don’t have enough power in 3rd to effectively keep the rear in check in case it decides to step out unexpectedly.
That said though I wouldn’t be surprised if doing that on a routine basis, week after week, has put a strain on my crank. I imagine the heavy mass of the C2/C2S crank being spun at 6k rpm for an “extended” period (couple of seconds) may have been enough to weaken/break it. I have also noticed that some of the replies in this thread have indicated their crank was the source of their problem.
While admittedly I am jumping to conclusions before I know what the problem actually is, this experience has made me a bit paranoid to push the car. Prior to the 997 I drove an E46 M3 for four years and never had a problem using the same style of driving I just described. And that was an engine that revved to 8k. When I am just casually cruising I shift at 3k, it is only when going into “hot” corners that I keep the revs north of 4500. I am also very cautious to make sure the oil has fully warmed up before shifting north of 3k.
That is where things stand right now. They swapped me into a 5-speed Cayman as a loaner and I must say this car is a blast to drive!
Would it even be worth it to request that they order a refurbished GT3 motor instead of the C2 motor, and then ask them if I could pay the difference in cost?
I will keep everyone updated.
I was surprised to hear that they were going to order a new engine without even taking the other one out to look at it first. I guess they have a protocol they follow when this happens. She also didn't mention anything about it not being under warranty so I am going to assume it is all covered.
For the past few days I have been trying to think about what may have been the cause of the problem. I recall reading that the GT3s have a lighter/stronger crank, and that got me wondering.
As I said in a previous post I don’t abuse the car, but I also by no means baby it. On almost a daily basis I take it out late at night and do some spirited runs on the highways/onramps around town to de-stress from my day. There is a particular set of corners I always drive to when I am out on my “cruise”. Upon entry to the corners I blip down to second gear from third and keep the revs hovering around 4500-5000, and then midway through the S’s I find myself hovering at 6k, and at the end of the set I nail it to 7k for a straight shot onto the freeway. (All of this is on a fenced in portion of road with no oncoming traffic and complete visibility, and also late at night) The only reason I shift down to 2nd and keep the revs that high is so that I can have greater ability to steer the rear of the car using throttle inputs. I don’t have enough power in 3rd to effectively keep the rear in check in case it decides to step out unexpectedly.
That said though I wouldn’t be surprised if doing that on a routine basis, week after week, has put a strain on my crank. I imagine the heavy mass of the C2/C2S crank being spun at 6k rpm for an “extended” period (couple of seconds) may have been enough to weaken/break it. I have also noticed that some of the replies in this thread have indicated their crank was the source of their problem.
While admittedly I am jumping to conclusions before I know what the problem actually is, this experience has made me a bit paranoid to push the car. Prior to the 997 I drove an E46 M3 for four years and never had a problem using the same style of driving I just described. And that was an engine that revved to 8k. When I am just casually cruising I shift at 3k, it is only when going into “hot” corners that I keep the revs north of 4500. I am also very cautious to make sure the oil has fully warmed up before shifting north of 3k.
That is where things stand right now. They swapped me into a 5-speed Cayman as a loaner and I must say this car is a blast to drive!
Would it even be worth it to request that they order a refurbished GT3 motor instead of the C2 motor, and then ask them if I could pay the difference in cost?
I will keep everyone updated.
