04-04-2024, 10:59 AM | #1 |
Drives: 2020 Camaro ZL1 Join Date: Oct 2020
Location: Fort Worth, Texas
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crank vs wheel HP
I know what the difference is, but why do some Dynos consider themselves "heartbreaker" because they come in so low, and what method can you ACTUALLY use to determine how much real life HP and Torque you actually have?
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04-04-2024, 11:20 AM | #2 |
Most dynos or not all have "weather stations". These weather stations take into account the conditions at the given time on the dyno and use them to spit out corrected number. The most common use is SAE correction. This offsets the high or low number and spits out a number that the car would see given ideal weather conditions. That is my understanding.
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04-04-2024, 11:25 AM | #3 |
The Poe Poe
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The best way to actually figure out your WHP is to go to a track (Given DA conditions will vary), make a few passes AFTER having weighed your car with you in it for the race weight, then use an HP calculator to plug in the race weight and trap speed.
This method has worked very well and almost matched my dyno hp to a T in the past with other vehicles. Other than that, you're relying on different dyno's and operators of them with correction factors. In the end, trap speed / weight will tell the story.
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04-04-2024, 11:25 AM | #4 |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
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I’ve never been a fan of reading horsepower, it’s the torque that matters in my opinion. A stallion and a Clydesdale are both one horse. But guaranteed one has more torque.
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04-04-2024, 11:32 AM | #5 | |
Drives: ZL1 Join Date: Oct 2021
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04-04-2024, 12:10 PM | #6 | |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
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04-04-2024, 12:21 PM | #7 |
Drives: 2020 Camaro ZL1 Join Date: Oct 2020
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If both dynos are using the SAE factor why can one be substantially lower than the other than?
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04-04-2024, 12:28 PM | #8 |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
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I’m not even sure how these Dynamometer’s with different designs would be calibrated to a standard? What makes one more accurate than the other?
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04-04-2024, 12:34 PM | #9 |
Drives: 2020 Camaro ZL1 Join Date: Oct 2020
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IDK, i'm asking you that lolllllllllll
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04-04-2024, 12:37 PM | #10 |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
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04-04-2024, 01:12 PM | #11 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
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For example, my car reads 123 lbs/min of airflow on the MAF which is generally around 1230 HP at the crank. At 15% drivetrain loss, that’s 1045 WHP. My car actually dynoed 1059 WHP, so well within the margin of error.
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04-04-2024, 01:32 PM | #12 | |
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
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04-04-2024, 01:43 PM | #13 | |
Drives: 2020 Camaro ZL1 Join Date: Oct 2020
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Quote:
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04-04-2024, 01:58 PM | #14 |
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With the road course scenario, coming out of a corner that’s where I think torque comes in?
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