AP2 max 2nd gear
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From: AZ
Originally Posted by robinson' timestamp='1320801580' post='21140315
[quote name='rocket71' timestamp='1320796351' post='21140080']
I got into a discussion at the Nashville Road Tour about max speed in 2nd gear. I am able to get a Racekeeper/GPS verified 60.5mph out of second gear when hitting the rev limiter. I am tuned to 8500 rpm. Is that right? Another AP2 driver said he was at 62/63. He didn't say what he was tuned to but did elude to if you are willing to increase the rev limiter you could get more speed out of 2nd gear (well duh). Then went on to say maybe he is only getting 60 mph. Maybe it was just word games but what is everyone getting out of 2nd? Anyone got there rev limiter above 8500 (AP1 aside)?
Does anyone know if anyone has done an reliability testing above 8500 rpm on a AP2? I have read a bit about piston speed and am just curious what the limits would be. To further ramble on, I would not hesitate at a tour event to bump the limiter to 9k if it would make the difference for a win. (I am a ways from getting the whole driving part down though.)
I got into a discussion at the Nashville Road Tour about max speed in 2nd gear. I am able to get a Racekeeper/GPS verified 60.5mph out of second gear when hitting the rev limiter. I am tuned to 8500 rpm. Is that right? Another AP2 driver said he was at 62/63. He didn't say what he was tuned to but did elude to if you are willing to increase the rev limiter you could get more speed out of 2nd gear (well duh). Then went on to say maybe he is only getting 60 mph. Maybe it was just word games but what is everyone getting out of 2nd? Anyone got there rev limiter above 8500 (AP1 aside)?
Does anyone know if anyone has done an reliability testing above 8500 rpm on a AP2? I have read a bit about piston speed and am just curious what the limits would be. To further ramble on, I would not hesitate at a tour event to bump the limiter to 9k if it would make the difference for a win. (I am a ways from getting the whole driving part down though.)
[/quote]
It's an 04' with aprox 40k. I don't think I hit 9k more than the average guy here. I only have one UOA mid way through the summer to reference. Since then I've put the car in storage and I won't have anymore data for 3 years.
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Originally Posted by rocket71' timestamp='1320803368' post='21140405
[quote name='robinson' timestamp='1320801580' post='21140315']
[quote name='rocket71' timestamp='1320796351' post='21140080']
I got into a discussion at the Nashville Road Tour about max speed in 2nd gear. I am able to get a Racekeeper/GPS verified 60.5mph out of second gear when hitting the rev limiter. I am tuned to 8500 rpm. Is that right? Another AP2 driver said he was at 62/63. He didn't say what he was tuned to but did elude to if you are willing to increase the rev limiter you could get more speed out of 2nd gear (well duh). Then went on to say maybe he is only getting 60 mph. Maybe it was just word games but what is everyone getting out of 2nd? Anyone got there rev limiter above 8500 (AP1 aside)?
Does anyone know if anyone has done an reliability testing above 8500 rpm on a AP2? I have read a bit about piston speed and am just curious what the limits would be. To further ramble on, I would not hesitate at a tour event to bump the limiter to 9k if it would make the difference for a win. (I am a ways from getting the whole driving part down though.)
[quote name='rocket71' timestamp='1320796351' post='21140080']
I got into a discussion at the Nashville Road Tour about max speed in 2nd gear. I am able to get a Racekeeper/GPS verified 60.5mph out of second gear when hitting the rev limiter. I am tuned to 8500 rpm. Is that right? Another AP2 driver said he was at 62/63. He didn't say what he was tuned to but did elude to if you are willing to increase the rev limiter you could get more speed out of 2nd gear (well duh). Then went on to say maybe he is only getting 60 mph. Maybe it was just word games but what is everyone getting out of 2nd? Anyone got there rev limiter above 8500 (AP1 aside)?
Does anyone know if anyone has done an reliability testing above 8500 rpm on a AP2? I have read a bit about piston speed and am just curious what the limits would be. To further ramble on, I would not hesitate at a tour event to bump the limiter to 9k if it would make the difference for a win. (I am a ways from getting the whole driving part down though.)
How often were you hitting the 9k? How many miles are on your car?
[/quote]
It's an 04' with aprox 40k. I don't think I hit 9k more than the average guy here. I only have one UOA mid way through the summer to reference. Since then I've put the car in storage and I won't have anymore data for 3 years.
[/quote]
UOA?
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IIRC, I had 3 track days with the higher limit, and on the average lap, I spent less than 1 second per lap bouncing off of the limiter. Guesstimating 10 laps a session, and 4 sessions a day, that would give us about 2 minutes spent bouncing off of the limiter. In reality, I tend to do less laps per session, but these are conservative numbers.
Wear basically tripled with 100 extra RPM during that oil change interval.
All samples are with 300V 5W30. I would imagine my oil temps are higher on track than at a AutoX, but 300V takes high temps well.
UOAs available upon request; just send me a PM.
Wear basically tripled with 100 extra RPM during that oil change interval.
All samples are with 300V 5W30. I would imagine my oil temps are higher on track than at a AutoX, but 300V takes high temps well.
UOAs available upon request; just send me a PM.
I've got datalogs of the stock limiter and a softened limiter. The softer limiter only has ~100RPM of overrun, while the stock limiter has ~300RPM of overrun (meaning a limiter of 8500 would see 8800RPM).
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From: Concord, CA
The N1 racing time attack car that I drove, had the rev limit at 8500 rpm and I use them all the time. Engine still running strong after 2 years. Engine was built 2.3L motor. Built by J's racing.
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From: Orange County, CA
Originally Posted by psychoazn' timestamp='1320801977' post='21140339
IIRC, I had 3 track days with the higher limit, and on the average lap, I spent less than 1 second per lap bouncing off of the limiter. Guesstimating 10 laps a session, and 4 sessions a day, that would give us about 2 minutes spent bouncing off of the limiter. In reality, I tend to do less laps per session, but these are conservative numbers.
Wear basically tripled with 100 extra RPM during that oil change interval.
All samples are with 300V 5W30. I would imagine my oil temps are higher on track than at a AutoX, but 300V takes high temps well.
UOAs available upon request; just send me a PM.
Wear basically tripled with 100 extra RPM during that oil change interval.
All samples are with 300V 5W30. I would imagine my oil temps are higher on track than at a AutoX, but 300V takes high temps well.
UOAs available upon request; just send me a PM.
I've got datalogs of the stock limiter and a softened limiter. The softer limiter only has ~100RPM of overrun, while the stock limiter has ~300RPM of overrun (meaning a limiter of 8500 would see 8800RPM).
Everything is lower by 100 RPMs with the 8400 limiter.
Just to clarify, I am running a FlashPro, and have my datalogger tapped directly into the RPM wire from the ECU. The flashpro can log directly from the ECU, but it's annoying having it dangling while driving
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