Dyno Compilation and Comparison to First Gen (23 cars avg. 215whp/175tq)

[eyeballs]

I've read from multiple sources that supposedly ~3% loss per 1000 feet in elevation, so 15% at 5,000 feet. My local club uses whp/wtq figures as part of the classing system, but it sounds like I've been underestimating my power based on what you've found (not that it affects me, as I'm right at the bottom edge of my class based on that 15% figure).

[Midnightsky]

Goin on the rollers tomorrow Videos and numbers to follow

[Midnightsky]

Went on the rollers today for a quick baseline.

Altitude 3435feet

[Jianlun]

I just saw it... sorry if its a repost. But whats with the official dyno graph below (from

. About 1:40 in).

So different from the earlier version (found on japan website and earlier marketing materials)

[Lantanafrs2]

Kw and nm vs hp and torque?

[Jianlun]

I was referring to the shape of the torque. Not the numbers. In fact, the torque curve on the dash display is more like the original marketing shape also, not this latest official one from toyota.

[Blighty]

Originally Posted by Jianlun

I just saw it... sorry if its a repost. But whats with the official dyno graph below (from

. About 1:40 in).

So different from the earlier version (found on japan website and earlier marketing materials)

Anyone notice the false advertising claim they made in the video?

@3:52
"... or FORGED black 18 inch wheels on the premium grade."

[Blighty]

Originally Posted by Jianlun

I was referring to the shape of the torque. Not the numbers. In fact, the torque curve on the dash display is more like the original marketing shape also, not this latest official one from toyota.

Yeah its falsified pretty much.

If you look at the power line compared to the torque line, it doesn't match.

For instance the power is shooting up as the torque hole starts in the new car, and in the old car the torque at the end of the RPM is still rising but there is a drop in power.

Great video about the cars changes and really nice animations, but this isn't engineering stuff, its marketing guy sitting behind the designers desk say 'Oh, can we make it loo a little better here, and the old one a little worse here - thanks!'

Lol. They really don't have to make shit up, honestly the car sells itself.

[Pat]

Originally Posted by eyeballs

I've read from multiple sources that supposedly ~3% loss per 1000 feet in elevation, so 15% at 5,000 feet. My local club uses whp/wtq figures as part of the classing system, but it sounds like I've been underestimating my power based on what you've found (not that it affects me, as I'm right at the bottom edge of my class based on that 15% figure).

What is your local club?
FYI, I might be in Edwards Saturday. Are you close to there?

[DriveDriftDogfight86]

I didn't see DSport on the list. They have over 1,000 dyno runs with FRS/BRZ's, and hosted the 86 Challenge at Willow Springs.

Their GR86 numbers are:
221.25 whp (SAE)
175.16 lb-ft

With stock FRS at 173whp (SAE) on the same dyno, the GR86 is making over 48whp peak, and over 55whp more at 7,000RPM than 1st gen.

"The FA24’s power curve is very similar to the FA20 with a CARB-legal supercharger."

"With the 2022 GR86, Toyota claims 228 horsepower at the flywheel. Toyota lied. We measured 221.25 horsepower at the wheels. That equates to 260 horsepower at the flywheel. Toyota has underrated the power by nearly 15 percent. In comparison to the first-generations FA20 engine, the 94mm bore FA24 engine delivers 28 percent more power and 21 percent more torque from the 19.5-percent larger displacement engine."

https://dsportmag.com/the-cars/first...2-toyota-gr86/

[eyeballs]

Originally Posted by Pat

What is your local club?
FYI, I might be in Edwards Saturday. Are you close to there?

I'm in Junction. The motorsports club is redrock racers.

[Blighty]

Originally Posted by DriveDriftDogfight86

I didn't see DSport on the list. They have over 1,000 dyno runs with FRS/BRZ's, and hosted the 86 Challenge at Willow Springs.

Their GR86 numbers are:
221.25 whp (SAE)
175.16 lb-ft

With stock FRS at 173whp (SAE) on the same dyno, the GR86 is making over 48whp peak, and over 55whp more at 7,000RPM than 1st gen.

"The FA24’s power curve is very similar to the FA20 with a CARB-legal supercharger."

"With the 2022 GR86, Toyota claims 228 horsepower at the flywheel. Toyota lied. We measured 221.25 horsepower at the wheels. That equates to 260 horsepower at the flywheel. Toyota has underrated the power by nearly 15 percent. In comparison to the first-generations FA20 engine, the 94mm bore FA24 engine delivers 28 percent more power and 21 percent more torque from the 19.5-percent larger displacement engine."

https://dsportmag.com/the-cars/first...2-toyota-gr86/

I agree about the difference, and THAT is the important thing here - I don't want to stress that enough, the car is far more powerful stock than just 25hp over the last gen. However the flywheel prediction is not worth much. SAE is one thing, but with all the other set-up and configuration on a roller dynos mean that trying to say what the flywheel power should be taken with a large grain of salt.

[DarkSunrise]

Originally Posted by Blighty

I agree about the difference, and THAT is the important thing here - I don't want to stress that enough, the car is far more powerful stock than just 25hp over the last gen. However the flywheel prediction is not worth much. SAE is one thing, but with all the other set-up and configuration on a roller dynos mean that trying to say what the flywheel power should be taken with a large grain of salt.

Yeah hard to estimate flywheel power. Another way to consider it, C&D just picked up a long term BRZ and it trapped 102 mph in the 1/4 mile. By comparison, the S2000's they've tested usually trapped around 98-99 mph. Although not a perfect comparison (similar weights but the S2000 aero profile is worse), but seems safe to say the BRZ is making at least 240 hp at the flywheel, if not a bit more.

[KillerBMotorsport]

Originally Posted by Blighty

SAE is one thing, but with all the other set-up and configuration on a roller dynos mean that trying to say what the flywheel power should be taken with a large grain of salt.

Our dyno has a process that determines parasitic losses. We haven't done it on a Gen 2 yet (we just used Gen 1 values), but my assumption is that it should give accurate engine output data comparative to wheel power figures. Although, while that scale may be accurate on OUR dyno, no two dynos are the same.