Three minutes at the red line. Who said the M96 is fragile?
07-19-2018, 10:26 PM
#1
Burning Brakes
Thread Starter
Three minutes at the red line. Who said the M96 is fragile?
I broke down and ordered a Durametric a week or so ago. I was out of town and the first thing I did when I got home today was to figure out how to make it work and plug it into my 99 C2. I was of course very curious about the Category 1 (>7300 rpm) and Category 2 (>7900 rpm) over-revs.
My car was purchased by Michelin Research and Development in April or May of 1998, when the 996 first went on sale, from Brumos Porsche in Florida. They installed a full roll cage (with the extensions that go into the drivers and passengers foot well) and Euro GT3 seats. Michelin proceeded to use it as a tire tester for about 14 years and 42,000 miles at their test track in Spartanburg SC. A young single gentleman in his 20s purchased it after that and put about 47,000 miles on it, primarily commuting between Greenville SC and Spartanburg SC. I know he “drove it as Dr Porsche intended” on multiple occasions. He told me he had it up to 168 mph (that would have been 103 mph over the speed limit where he drove it – newsworthy if he had been caught) and I believe him. I am the third owner and I have had it for about a year and a quarter. I have put about 3000 miles on it.
Getting to the point, the Durametric told me my engine has 2486.5 hours of run time. There are 65,535 Category 1 ignitions, the last being at 2397.6 hours (that would be me
). Dividing by 3 ignitions per revolution and dividing by 7300 revolutions per minute gives me about 2.992 minutes at the red line. I will likely add more when I take my car to Road Atlanta on Tuesday.
Fortunately, there aren’t too many Category 2 over-revs, and they are old. There are 1315, with the last occurrence at hour 850.9, most likely when Michelin owned it and the car had roughly 32,000 miles. 1315 ignitions equates to about 3.3 seconds. I know some people have had engine damage with fewer ignitions, but the data log doesn’t tell you how may events it took to get a total of 3.3 seconds, or how far over 7900 rpm the engine went.
I don’t recall anyone posting a number greater than 65,535 Category 1 ignitions. I know I have seen Category 2 numbers greater than 1315.
My car was purchased by Michelin Research and Development in April or May of 1998, when the 996 first went on sale, from Brumos Porsche in Florida. They installed a full roll cage (with the extensions that go into the drivers and passengers foot well) and Euro GT3 seats. Michelin proceeded to use it as a tire tester for about 14 years and 42,000 miles at their test track in Spartanburg SC. A young single gentleman in his 20s purchased it after that and put about 47,000 miles on it, primarily commuting between Greenville SC and Spartanburg SC. I know he “drove it as Dr Porsche intended” on multiple occasions. He told me he had it up to 168 mph (that would have been 103 mph over the speed limit where he drove it – newsworthy if he had been caught) and I believe him. I am the third owner and I have had it for about a year and a quarter. I have put about 3000 miles on it.
Getting to the point, the Durametric told me my engine has 2486.5 hours of run time. There are 65,535 Category 1 ignitions, the last being at 2397.6 hours (that would be me
). Dividing by 3 ignitions per revolution and dividing by 7300 revolutions per minute gives me about 2.992 minutes at the red line. I will likely add more when I take my car to Road Atlanta on Tuesday.Fortunately, there aren’t too many Category 2 over-revs, and they are old. There are 1315, with the last occurrence at hour 850.9, most likely when Michelin owned it and the car had roughly 32,000 miles. 1315 ignitions equates to about 3.3 seconds. I know some people have had engine damage with fewer ignitions, but the data log doesn’t tell you how may events it took to get a total of 3.3 seconds, or how far over 7900 rpm the engine went.
I don’t recall anyone posting a number greater than 65,535 Category 1 ignitions. I know I have seen Category 2 numbers greater than 1315.
07-19-2018, 11:15 PM
#2
Race Car
I broke down and ordered a Durametric a week or so ago. I was out of town and the first thing I did when I got home today was to figure out how to make it work and plug it into my 99 C2. I was of course very curious about the Category 1 (>7300 rpm) and Category 2 (>7900 rpm) over-revs.
My car was purchased by Michelin Research and Development in April or May of 1998, when the 996 first went on sale, from Brumos Porsche in Florida. They installed a full roll cage (with the extensions that go into the drivers and passengers foot well) and Euro GT3 seats. Michelin proceeded to use it as a tire tester for about 14 years and 42,000 miles at their test track in Spartanburg SC. A young single gentleman in his 20s purchased it after that and put about 47,000 miles on it, primarily commuting between Greenville SC and Spartanburg SC. I know he “drove it as Dr Porsche intended” on multiple occasions. He told me he had it up to 168 mph (that would have been 103 mph over the speed limit where he drove it – newsworthy if he had been caught) and I believe him. I am the third owner and I have had it for about a year and a quarter. I have put about 3000 miles on it.
Getting to the point, the Durametric told me my engine has 2486.5 hours of run time. There are 65,535 Category 1 ignitions, the last being at 2397.6 hours (that would be me). Dividing by 3 ignitions per revolution and dividing by 7300 revolutions per minute gives me about 2.992 minutes at the red line. I will likely add more when I take my car to Road Atlanta on Tuesday.
Fortunately, there aren’t too many Category 2 over-revs, and they are old. There are 1315, with the last occurrence at hour 850.9, most likely when Michelin owned it and the car had roughly 32,000 miles. 1315 ignitions equates to about 3.3 seconds. I know some people have had engine damage with fewer ignitions, but the data log doesn’t tell you how may events it took to get a total of 3.3 seconds, or how far over 7900 rpm the engine went.
I don’t recall anyone posting a number greater than 65,535 Category 1 ignitions. I know I have seen Category 2 numbers greater than 1315.
My car was purchased by Michelin Research and Development in April or May of 1998, when the 996 first went on sale, from Brumos Porsche in Florida. They installed a full roll cage (with the extensions that go into the drivers and passengers foot well) and Euro GT3 seats. Michelin proceeded to use it as a tire tester for about 14 years and 42,000 miles at their test track in Spartanburg SC. A young single gentleman in his 20s purchased it after that and put about 47,000 miles on it, primarily commuting between Greenville SC and Spartanburg SC. I know he “drove it as Dr Porsche intended” on multiple occasions. He told me he had it up to 168 mph (that would have been 103 mph over the speed limit where he drove it – newsworthy if he had been caught) and I believe him. I am the third owner and I have had it for about a year and a quarter. I have put about 3000 miles on it.
Getting to the point, the Durametric told me my engine has 2486.5 hours of run time. There are 65,535 Category 1 ignitions, the last being at 2397.6 hours (that would be me
). Dividing by 3 ignitions per revolution and dividing by 7300 revolutions per minute gives me about 2.992 minutes at the red line. I will likely add more when I take my car to Road Atlanta on Tuesday.Fortunately, there aren’t too many Category 2 over-revs, and they are old. There are 1315, with the last occurrence at hour 850.9, most likely when Michelin owned it and the car had roughly 32,000 miles. 1315 ignitions equates to about 3.3 seconds. I know some people have had engine damage with fewer ignitions, but the data log doesn’t tell you how may events it took to get a total of 3.3 seconds, or how far over 7900 rpm the engine went.
I don’t recall anyone posting a number greater than 65,535 Category 1 ignitions. I know I have seen Category 2 numbers greater than 1315.
07-19-2018, 11:37 PM
#3
Burning Brakes
Thread Starter
I probably should have added that I don't think the engine and transmission have ever been apart. The previous owner thought the clutch might have been replaced before he bought it, but he has no evidence. Crawling under it, I don't see any evidence. Everything looks completely stock and original. The only engine related component that I know is not original is the alternator. I will see what I get into this weekend when I do some maintenance and upgrades.
07-19-2018, 11:42 PM
#4
Race Car
Well that makes it even more interesting. I wonder what the real number is then. No way to know. It does make me think I need to start saving for the inevitable rebuild.
I probably should have added that I don't think the engine and transmission have ever been apart. The previous owner thought the clutch might have been replaced before he bought it, but he has no evidence. Crawling under it, I don't see any evidence. Everything looks completely stock and original. The only engine related component that I know is not original is the alternator. I will see what I get into this weekend when I do some maintenance and upgrades.
I probably should have added that I don't think the engine and transmission have ever been apart. The previous owner thought the clutch might have been replaced before he bought it, but he has no evidence. Crawling under it, I don't see any evidence. Everything looks completely stock and original. The only engine related component that I know is not original is the alternator. I will see what I get into this weekend when I do some maintenance and upgrades.
07-20-2018, 02:57 AM
#5
RL Community Team
Rennlist Member
Rennlist Member
My 996 had 997 Category 1 ignitions when I checked it before buying.
Wny couldn’t it have been 1 less?
I have added a few more since.
My car had just over 50K when I bought it last Sept, but the previous owner had the clutch replaced at 32K when the IMS Solution was installed.
Since it is my daily driver (52 mile stop and go traffic) the clutch is getting a good workout.
I hope it lasts me a while still.
Wny couldn’t it have been 1 less?
I have added a few more since.
My car had just over 50K when I bought it last Sept, but the previous owner had the clutch replaced at 32K when the IMS Solution was installed.
Since it is my daily driver (52 mile stop and go traffic) the clutch is getting a good workout.
I hope it lasts me a while still.
07-20-2018, 11:58 AM
#7
That is some awesome history, so they ran the crap out of that thing for 14 years?
Fairly easy to get a lot of over revs when racing, maybe they had a section at the track where it didn't make sense to shift into next gear but just continue before the turn. Some times it makes sense to rev a little past shift point since a shift takes time.
Fairly easy to get a lot of over revs when racing, maybe they had a section at the track where it didn't make sense to shift into next gear but just continue before the turn. Some times it makes sense to rev a little past shift point since a shift takes time.
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07-20-2018, 12:25 PM
#8
My 2000 Boxster has 65535 range 1 ignitions, and only 1 range 2 ignition, I feel it the range 2 is likely a glitch, can't recall the hours but I recall that it was a while ago.
07-20-2018, 01:41 PM
#10
Rennlist Member
no DME report on my car, but last summer another RL'r got me to go to a HPDE
https://www.tracknightinamerica.com
ridiculously fun, ran my car at near redline for 3 / 20 minutes sessions, not to mention
the gumball rally that was the trip there (thx Alex)
my car ran so much quieter and smoother all the way home, I was genuinely surprised
at what it was capable of on a small track
https://www.tracknightinamerica.com
ridiculously fun, ran my car at near redline for 3 / 20 minutes sessions, not to mention
the gumball rally that was the trip there (thx Alex)
my car ran so much quieter and smoother all the way home, I was genuinely surprised
at what it was capable of on a small track
07-20-2018, 03:59 PM
#13
Rennlist Member
I broke down and ordered a Durametric a week or so ago. I was out of town and the first thing I did when I got home today was to figure out how to make it work and plug it into my 99 C2. I was of course very curious about the Category 1 (>7300 rpm) and Category 2 (>7900 rpm) over-revs.
My car was purchased by Michelin Research and Development in April or May of 1998, when the 996 first went on sale, from Brumos Porsche in Florida. They installed a full roll cage (with the extensions that go into the drivers and passengers foot well) and Euro GT3 seats. Michelin proceeded to use it as a tire tester for about 14 years and 42,000 miles at their test track in Spartanburg SC. A young single gentleman in his 20s purchased it after that and put about 47,000 miles on it, primarily commuting between Greenville SC and Spartanburg SC. I know he “drove it as Dr Porsche intended” on multiple occasions. He told me he had it up to 168 mph (that would have been 103 mph over the speed limit where he drove it – newsworthy if he had been caught) and I believe him. I am the third owner and I have had it for about a year and a quarter. I have put about 3000 miles on it.
Getting to the point, the Durametric told me my engine has 2486.5 hours of run time. There are 65,535 Category 1 ignitions, the last being at 2397.6 hours (that would be me). Dividing by 3 ignitions per revolution and dividing by 7300 revolutions per minute gives me about 2.992 minutes at the red line. I will likely add more when I take my car to Road Atlanta on Tuesday.
Fortunately, there aren’t too many Category 2 over-revs, and they are old. There are 1315, with the last occurrence at hour 850.9, most likely when Michelin owned it and the car had roughly 32,000 miles. 1315 ignitions equates to about 3.3 seconds. I know some people have had engine damage with fewer ignitions, but the data log doesn’t tell you how may events it took to get a total of 3.3 seconds, or how far over 7900 rpm the engine went.
I don’t recall anyone posting a number greater than 65,535 Category 1 ignitions. I know I have seen Category 2 numbers greater than 1315.
My car was purchased by Michelin Research and Development in April or May of 1998, when the 996 first went on sale, from Brumos Porsche in Florida. They installed a full roll cage (with the extensions that go into the drivers and passengers foot well) and Euro GT3 seats. Michelin proceeded to use it as a tire tester for about 14 years and 42,000 miles at their test track in Spartanburg SC. A young single gentleman in his 20s purchased it after that and put about 47,000 miles on it, primarily commuting between Greenville SC and Spartanburg SC. I know he “drove it as Dr Porsche intended” on multiple occasions. He told me he had it up to 168 mph (that would have been 103 mph over the speed limit where he drove it – newsworthy if he had been caught) and I believe him. I am the third owner and I have had it for about a year and a quarter. I have put about 3000 miles on it.
Getting to the point, the Durametric told me my engine has 2486.5 hours of run time. There are 65,535 Category 1 ignitions, the last being at 2397.6 hours (that would be me
). Dividing by 3 ignitions per revolution and dividing by 7300 revolutions per minute gives me about 2.992 minutes at the red line. I will likely add more when I take my car to Road Atlanta on Tuesday.Fortunately, there aren’t too many Category 2 over-revs, and they are old. There are 1315, with the last occurrence at hour 850.9, most likely when Michelin owned it and the car had roughly 32,000 miles. 1315 ignitions equates to about 3.3 seconds. I know some people have had engine damage with fewer ignitions, but the data log doesn’t tell you how may events it took to get a total of 3.3 seconds, or how far over 7900 rpm the engine went.
I don’t recall anyone posting a number greater than 65,535 Category 1 ignitions. I know I have seen Category 2 numbers greater than 1315.
Some people beat the heck out of their cars while they are still under warranty, because, if anything fails, warranty will cover it. But a side benefit is that anything that’s a weak link on the car might show or manifest itself early on.
A lot of times, these manufacturer cars that are given to a 3rd party for testing, reviews, advertisements, etc., are maintained better than owners cars. The reason is because they don’t want to risk having a perceived problem of performance while on the track that could cause reviewers to complain or worse, start talking negatively about the car to others.
07-20-2018, 04:20 PM
#15
Rennlist Member
^^ The early 996s have quite a few advantages. They have the old dual-row IMSB, old style cylinder head gaskets, lower torque and HP, so less heat and lower bore scoring pressure, less need for the 3rd radiator, etc.
Of course, no cup holders, no glovebox, plastic rear window on cabs, etc. But cheaper because of that.
Of course, no cup holders, no glovebox, plastic rear window on cabs, etc. But cheaper because of that.