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-   -   Any publication strap this car on a dyno yet? (https://www.ft86club.com/forums/showthread.php?t=2904)

mspeed6 12-15-2011 10:09 AM

Any publication strap this car on a dyno yet?
 
Like to see what it puts down to the wheels in the real world. the k20 in the Si is pretty underrated putting down 180whp, like to see what this new engine does.

JDLM 12-15-2011 10:44 AM

Nothing released or has been posted

mines13 12-15-2011 11:47 AM

This will have much higher drive train loss then the FWD K series. I would expect around 160ish wheel horsepower. But we will not know for sure until we see the same car in the same conditions run on a Mustang or Dyno Dynamics, etc. Inertial numbers are pretty much bunk.

wcbjr 12-15-2011 12:08 PM

Quote:

Originally Posted by mines13 (Post 98621)
This will have much higher drive train loss then the FWD K series. I would expect around 160ish wheel horsepower. But we will not know for sure until we see the same car in the same conditions run on a Mustang or Dyno Dynamics, etc. Inertial numbers are pretty much bunk.

This is not an AWD car. There will not be 25% loss.

mines13 12-15-2011 12:32 PM

Quote:

Originally Posted by wcbjr (Post 98632)
This is not an AWD car. There will not be 25% loss.

25% drive train loss would be 150hp. My quote was "160ish" wheel horsepower; my estimate, not fact. The "160ish" hp number could be between 16% and 20% drive train loss, and a completely reasonable estimate. For the nit picker or mathematically challenged that could be anywhere between 160whp and 169whp. Thanks for playing.

fa5tco 12-15-2011 02:29 PM

Maybe its underrated from the factory and the 200 will be to the wheels........sigh....we can hope I guess

mines13 12-15-2011 02:39 PM

Quote:

Originally Posted by fa5tco (Post 98707)
Maybe its underrated from the factory and the 200 will be to the wheels........sigh....we can hope I guess

I would not get my hopes up, would be nice though. :D

ryude 12-15-2011 03:35 PM

Stock 2011+ Mustang GT puts down 375WHP, that's 10% drivetrain loss...

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Before anyone replies with, "Well that's a v8!" I understand this, I'm just pointing out that sometimes horsepower is underrated.

mspeed6 12-15-2011 03:58 PM

the 5.0 is underrated.

Ryephile 12-15-2011 04:33 PM

All the media coverage so far has been under the supervision of Toyota/Scion/Subaru at racetracks. As far as we know, nobody's been able to take one out in the wild...and to a known-quantity chassis dyno.

We'll see in time what the FA20 puts down. With any luck the people doing the dyno are smart enough to post a known quantity and have reasonable datalogging to see operational conditions.

mines13 12-15-2011 04:33 PM

Quote:

Originally Posted by mspeed6 (Post 98770)
the 5.0 is underrated.

This, also one must take in to consideration calibration, inertial vs eddy current, SAE corrected or uncorrected, wheel diameter, drag compensation, etc. The dyno really only tells you what you are making on a given day, with your particular car on that particular dyno. I was a dyno operator/tuner for 5 years of my life.

fatoni 12-15-2011 05:28 PM

Quote:

Originally Posted by mines13 (Post 98644)
25% drive train loss would be 150hp. My quote was "160ish" wheel horsepower; my estimate, not fact. The "160ish" hp number could be between 16% and 20% drive train loss, and a completely reasonable estimate. For the nit picker or mathematically challenged that could be anywhere between 160whp and 169whp. Thanks for playing.

for the nitpicker or mathematically challenged i would think that 160ish would be more like 155-165 but seriously i can the upper 160s being most probable

fatoni 12-15-2011 05:31 PM

Quote:

Originally Posted by ryude (Post 98757)
Stock 2011+ Mustang GT puts down 375WHP, that's 10% drivetrain loss...

Before anyone replies with, "Well that's a v8!" I understand this, I'm just pointing out that sometimes horsepower is underrated.

i wonder if the solid rear axle can reduce drivetrain losses. i think most of the losses from rwd comes from the fact that you have to deflect the energy if you keep the wheels on the same plane as the diff there would be less total deflection...anybody know?

mines13 12-15-2011 08:12 PM

Quote:

Originally Posted by fatoni (Post 98829)
i wonder if the solid rear axle can reduce drivetrain losses. i think most of the losses from rwd comes from the fact that you have to deflect the energy if you keep the wheels on the same plane as the diff there would be less total deflection...anybody know?

There are so many factors there. The short answer is may or may not. depending on the size of the pumpkin, the mass of the axles, the mass of the hub/wheel/tire/brake rotor/CVs, etc. Hell, even the viscosity of the differential fluid would effect drive line loss post transmission... This is all ignoring the transmission/engine itself. I do not think there is a simple answer to that, apples to oranges.


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