Stock power at the wheels/dyno numbers? Plus weight?
07-18-2018, 12:36 PM
#1
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Stock power at the wheels/dyno numbers? Plus weight?
Need to know what the range in power at the wheels is on a Dynojet 248 on a stock K16 car. NASA won't give me a base class on our car, I've gotta go power to weight. Since I'm just going to be running for fun, I just need ball park figures. If I get serious about it I'll weigh and dyno the car and be more accurate.
Google says ~3400lbs for the car, I assume that's with a full tank of fuel?
So toss me some numbers your cars have made stock and I'll just take an average to use...
TIA!
Google says ~3400lbs for the car, I assume that's with a full tank of fuel?
So toss me some numbers your cars have made stock and I'll just take an average to use...
TIA!
07-18-2018, 07:01 PM
#2
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420hp - 15% drive line loss should be around 357hp to the wheels...
07-18-2018, 07:50 PM
#5
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As I recall Dock, the 420hp number was valid for our cars as it was prior to SAE changes in measurement protocols.
07-18-2018, 08:07 PM
#6
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Net horsepower, SAE J 1349.........414 hp/309 kW
The 309 kW converts to 414.38 hp/SAE or 420.12 hp DIN
My understanding is that U.S. dynos generally record their results in SAE horsepower.
07-18-2018, 08:10 PM
#7
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Didn't all the advertising say 420hp for non x50?
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07-18-2018, 08:36 PM
#8
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If it was coming from Europe, or PAG specifically, that's probably the case. Porsche doesn't generally specify in public that the 420 hp is DIN. They just publish "420". Why? I think it is because the DIN number is what Europe uses and would therefore be relative there and also an assumed measurement standard there, while the higher DIN number plays better in the U.S. where the standard is SAE, and every single horsepower number advertised is important in the "how much horsepower does your car have" game. Porsche just wasn't being completely forthcoming in their advertisement here in the United States. By not specifically stating in public that the 420 hp is DIN, they win a bit on the advertising front by having a bigger number here in the U.S. market. IMO, since the standard here is SAE, they should have advertised 414 hp to keep everything apples to apples in this market.
I seem to remember some of the car magazines in the U.S. getting it right at 414 (or 415) horsepower. They may have done the kW to SAE Hp conversion to keep the comparison units the same for all U.S. sold vehicles.
I seem to remember some of the car magazines in the U.S. getting it right at 414 (or 415) horsepower. They may have done the kW to SAE Hp conversion to keep the comparison units the same for all U.S. sold vehicles.
07-18-2018, 09:24 PM
#9
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If it was coming from Europe, or PAG specifically, that's probably the case. Porsche doesn't generally specify in public that the 420 hp is DIN. They just publish "420". Why? I think it is because the DIN number is what Europe uses and would therefore be relative there and also an assumed measurement standard there, while the higher DIN number plays better in the U.S. where the standard is SAE, and every single horsepower number advertised is important in the "how much horsepower does your car have" game. Porsche just wasn't being completely forthcoming in their advertisement here in the United States. By not specifically stating in public that the 420 hp is DIN, they win a bit on the advertising front by having a bigger number here in the U.S. market. IMO, since the standard here is SAE, they should have advertised 414 hp to keep everything apples to apples in this market.
I seem to remember some of the car magazines in the U.S. getting it right at 414 (or 415) horsepower. They may have done the kW to SAE Hp conversion to keep the comparison units the same for all U.S. sold vehicles.
I seem to remember some of the car magazines in the U.S. getting it right at 414 (or 415) horsepower. They may have done the kW to SAE Hp conversion to keep the comparison units the same for all U.S. sold vehicles.
07-18-2018, 09:29 PM
#10
If you end up doing a dyno, you can take it to Dynopro in Arvada. It’s not a bad idea to do a baseline anyway in case you end up modding it down the road and nice to have a sheet in case someone accuses you of making too much power. They use a Dynojet and do a ton of Porsches. I’ve had my car dynoed there a number of times. They’re good guys and have done many cars that needed a sheet for Nasa and others. They will do a few pulls for $75. You’ll need to disconnect the front drive shaft, takes about 30 mins.
Last edited by powdrhound; 07-18-2018 at 10:22 PM.
07-18-2018, 09:36 PM
#11
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Here are three articles that state 415 on the horsepower number. One is from Car and Driver in 2000, one is from Motor Trend from 2003, and one is from Autoweek from 2000.
https://www.caranddriver.com/reviews...t-drive-review
https://www.motortrend.com/cars/porsche/911/2001/2001-porsche-911-turbo/
http://autoweek.com/article/car-news/porsche-911-turbo-newest-king-road-good-looks-and-personality-boot
https://www.caranddriver.com/reviews...t-drive-review
https://www.motortrend.com/cars/porsche/911/2001/2001-porsche-911-turbo/
http://autoweek.com/article/car-news/porsche-911-turbo-newest-king-road-good-looks-and-personality-boot
07-18-2018, 11:40 PM
#12
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Here are three articles that state 415 on the horsepower number. One is from Car and Driver in 2000, one is from Motor Trend from 2003, and one is from Autoweek from 2000.
https://www.caranddriver.com/reviews...t-drive-review
https://www.motortrend.com/cars/porsche/911/2001/2001-porsche-911-turbo/
http://autoweek.com/article/car-news/porsche-911-turbo-newest-king-road-good-looks-and-personality-boot
https://www.caranddriver.com/reviews...t-drive-review
https://www.motortrend.com/cars/porsche/911/2001/2001-porsche-911-turbo/
http://autoweek.com/article/car-news/porsche-911-turbo-newest-king-road-good-looks-and-personality-boot
07-19-2018, 10:33 AM
#14
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If you end up doing a dyno, you can take it to Dynopro in Arvada. It’s not a bad idea to do a baseline anyway in case you end up modding it down the road and nice to have a sheet in case someone accuses you of making too much power. They use a Dynojet and do a ton of Porsches. I’ve had my car dynoed there a number of times. They’re good guys and have done many cars that needed a sheet for Nasa and others. They will do a few pulls for $75. You’ll need to disconnect the front drive shaft, takes about 30 mins.
07-19-2018, 12:13 PM
#15