Mustang GT dyno test frpp cams, boost brothers LT, UPR CAI, Hooker Aerochamber muffer - Page 2 - Ford Mustang Forum
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So does that mean you subtracted out the estimated drivetrain loss? there is no way to get crank numbers without removing the engine


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post #17 of 20 (permalink) Old 05-19-2010 Thread Starter
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Quote:
Originally Posted by TeeBee9320 View Post
So does that mean you subtracted out the estimated drivetrain loss? there is no way to get crank numbers without removing the engine
You can calculate power on the crank.

The inertial dyno test consist of 2 steps:

Step one
Roller acceleration measurement on the wheels it is power on the wheels.

Step two,
Change to neutral gear and measure power loss, how fast the rolls slow down, drivetrain loss.


Power on the crank = power on the wheels (step one ) + power loss (step two )


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Mods: Hooker Aerochamber muffers, Boost Brothers LT, FRPP Hot Rod cams, FRPP Intake Manifold, GT500 throttle, UPR CAI, H&R fronr & rear stabilizers, J&M LCA, Metco UCA, Spohn panhard bar, line lock, Brembo 14" brakes, Seibon carbon hood, 18" shelby wheels, 4.10 Gears
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Oo cool never thought of it that way...why don't tuners in the states do that? lol

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post #19 of 20 (permalink) Old 05-20-2010 Thread Starter
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Quote:
Originally Posted by TeeBee9320 View Post
Oo cool never thought of it that way...why don't tuners in the states do that? lol
Because this approach is accurate with manual transmission,
and sometimes not very accurate with automatic transmission.

It's Never Too Late to Have a Happy Childhood

Mods: Hooker Aerochamber muffers, Boost Brothers LT, FRPP Hot Rod cams, FRPP Intake Manifold, GT500 throttle, UPR CAI, H&R fronr & rear stabilizers, J&M LCA, Metco UCA, Spohn panhard bar, line lock, Brembo 14" brakes, Seibon carbon hood, 18" shelby wheels, 4.10 Gears
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post #20 of 20 (permalink) Old 05-20-2010 Thread Starter
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More precise should be:

The inertial dyno test consist of 2 steps:

Step one
Roller acceleration measurement on the wheels it is power on the wheels.

Step two,
Disconnect manual gear box by pushing the cluth pedal gear and measure power loss, how fast the rolls slow down, drivetrain loss ( manual transmission loss, gear, wheels loss )


Power on the crank = power on the wheels (step one ) + power loss (step two )

It's Never Too Late to Have a Happy Childhood

Mods: Hooker Aerochamber muffers, Boost Brothers LT, FRPP Hot Rod cams, FRPP Intake Manifold, GT500 throttle, UPR CAI, H&R fronr & rear stabilizers, J&M LCA, Metco UCA, Spohn panhard bar, line lock, Brembo 14" brakes, Seibon carbon hood, 18" shelby wheels, 4.10 Gears
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