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Mustang Forums
2011-2014 Mustangs
2011-2014 Mustang Talk
Dyno pulls in 4th
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<blockquote data-quote="dirtyd88" data-source="post: 13481149" data-attributes="member: 84007"><p>No, the motor is actually working harder. Exactly why people tell you I not run a at hard in OD because it stresses the motor too much. The trans and rear diff aren't working as hard in under drive. Theoretically, the motor performs the same work all the time, it's just that the drive like itself induces counter stresses on the motor to move the car. This is why rear gear ratios have a slight effect on dyno readings. TQ should read higher in an under drive since the motor is having to work harder, since torque is work...unless this physics concept doesn't exactly apply. The hp will plummet because of how long it will take to perform that work over time.</p><p></p><p>I'm curious to see someone do that. Make a pull in 4th, 5th and 6th gears, only to like 4k rpm or so and look at the difference.</p></blockquote><p></p>
[QUOTE="dirtyd88, post: 13481149, member: 84007"] No, the motor is actually working harder. Exactly why people tell you I not run a at hard in OD because it stresses the motor too much. The trans and rear diff aren't working as hard in under drive. Theoretically, the motor performs the same work all the time, it's just that the drive like itself induces counter stresses on the motor to move the car. This is why rear gear ratios have a slight effect on dyno readings. TQ should read higher in an under drive since the motor is having to work harder, since torque is work...unless this physics concept doesn't exactly apply. The hp will plummet because of how long it will take to perform that work over time. I'm curious to see someone do that. Make a pull in 4th, 5th and 6th gears, only to like 4k rpm or so and look at the difference. [/QUOTE]
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2011-2014 Mustang Talk
Dyno pulls in 4th
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