From dealer to dyno...
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ShadowGray19 (03-12-2020)
03-11-2020, 02:53 PM
#5
Drifting
Please post the printout so we can see the curve.
Peak number are good to know but only tell half the story...
03-11-2020, 04:30 PM
#6
Instructor
03-11-2020, 04:40 PM
#8
So the car makes almost exactly the 500hp it's rated at, assuming an ultra low 12-13% loss. Could improve a bit after breakin, or possible the car might even be limiting the overall power even AFTER break in. Since none of us has any insight into the computer side of the equation nobody really knows.
03-11-2020, 04:41 PM
#9
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DJGold (03-14-2020)
03-11-2020, 05:31 PM
#12
Let's slow down a bit?
Not all dynos are created equal nor are all testing conditions the same.
Allegedly the SAE numbers are repeatable on the same machine under the same conditions.
Still everything seems to be in the same ballpark
Not all dynos are created equal nor are all testing conditions the same.
Allegedly the SAE numbers are repeatable on the same machine under the same conditions.
Still everything seems to be in the same ballpark
Last edited by Kodiak Bear; 03-11-2020 at 05:31 PM.
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CPhelps (03-12-2020)
03-11-2020, 05:33 PM
#13
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myfunweecar (03-12-2020)
03-11-2020, 05:43 PM
#14
But this seams about right.
LT1 Stingrays were dynoing about 400-415 on dynojet dyno's
That's about 11% drive train loss.
495 - 11% = 440
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usrodeo4 (03-12-2020)
03-11-2020, 05:51 PM
#16
Banned Scam/Spammer
So the car makes almost exactly the 500hp it's rated at, assuming an ultra low 12-13% loss. Could improve a bit after breakin, or possible the car might even be limiting the overall power even AFTER break in. Since none of us has any insight into the computer side of the equation nobody really knows.
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03-11-2020, 06:54 PM
#17
Melting Slicks
I personally have tested my theory of calculating RWHP #s plus 15% to come real close to all the legit chassis dyno pulls on multiple cars and makes to ball park crank horsepower. In this car and this case 440 rwhp+15 % = 506, 408 rw torque +15% = 469... damn close to the 495 - 470 advertised engine dyno #s
Last edited by BJ67; 03-11-2020 at 06:57 PM.
03-11-2020, 07:31 PM
#19
Team Owner
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CORVETTE TODAY Host
St. Jude Donor'15
Smh......
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03-11-2020, 07:33 PM
#20
Moderator
C8 Break In Torque Reduction
From Ask Tadge:
For the 8th generation Corvette, we have taken it a step farther. With more weight on the rear, the car has more traction and we take advantage of that with more aggressive gearing. That translates into more torque multiplication and more loads in the driveline. We decided for the first 500 miles to limit maximum torque in first and second gears. The torque reduction is roughly 25 to 30% depending on which transaxle (standard or Z51) and which gear. That may sound like a big reduction, but in reality the car is still really fast. In fact, you could easily spin the tires on some surfaces. Engine speed is not limited at all – it will wind out to redline. So the torque reduction limits the worse of potential break in wear, but is not a panacea. We will still be asking customers to stay well off max torque and speed for the first 500 miles. We know it is hard to stay patient when such performance is available, but it will pay off in the long run.
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