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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 06-03-2012, 03:00 PM   #15
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Here are the corner weights for the two types of runs (full weight / minor weight reduction)

rear seats removed, spare tire / jack / tools / floor mats removed, with 1/4 tank of fuel:

+/- 2% accuracy

vehicle weight: 2652.21 lbs - 2852 with driver

Passenger side | Driver side
Front : 775lbs 29.2% | 746lbs 28.1%
Rear: 555lbs 20.9% | 573lbs 21.6%


No weight reduction, 1/4 tank of fuel:

+/- 2% accuracy

vehicle weight: 2722 lbs 2922 with driver

Passenger side | Driver side
Front: 789lbs 29.0% | 734lbs 27.0%
Rear: 597lbs 21.9% | 597lbs 21.9%

Last edited by Illusive; 06-03-2012 at 04:55 PM.
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Old 06-03-2012, 04:42 PM   #16
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Here is the video of the FR-S against a Hundai genesis 360 coupe:


Last edited by Illusive; 06-03-2012 at 05:28 PM.
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Old 06-03-2012, 04:57 PM   #17
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I did read car and driver magazine cracked a 14.9 from their test car - don't know the car specs or track location. Yours is good for hot n humid conditions
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Old 06-03-2012, 05:34 PM   #18
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I did read car and driver magazine cracked a 14.9 from their test car - don't know the car specs or track location. Yours is good for hot n humid conditions
Motor trend also tested the FR-S and BR-Z
They got 14.8@94.4 for the FR-S and 14.9 @94.3 for the BR-Z.

They don't list the conditions or vehicle weight for their testing, but it is interesting to see that they achieved simmilar ET with much higher MPH (94.4 for 14.9 vs our 91.11 for 14.9)

In cooler weather without a headwind I can see the full weight car doing a 14.7 @ 94 mph if driven well. I also see a 14.5 @ 95 mph with some minor weight reduction in the same cooler "ideal" conditions.
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Old 06-04-2012, 04:51 PM   #19
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DD

Can't wait to see what you guys come up with for the BRZ/FRS. You have done great things for the 2zz.
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Old 07-03-2012, 11:20 PM   #20
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We finally got 2500 miles or so on the FR-S and got some fresh oil in the car. Here's the updated dyno and our new baseline:



Both runs were done in 5th, and runfile 007 is the last dyno we did in 5th while the motor was still new (250 miles or so). Runfile 015 is after break-in and fresh oil
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Old 07-04-2012, 12:17 AM   #21
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So how the hell did best motoring get a 14.3?
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Old 07-04-2012, 04:55 AM   #22
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So how the hell did best motoring get a 14.3?
I think they did a 400 meter run which is shorter than a 1/4mile by 18 feet. Shorter distance = faster time.
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Old 07-04-2012, 05:18 AM   #23
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wow, pretty big improvement after breaking it in!
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Old 07-04-2012, 07:36 AM   #24
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Just wanted to say that I followed your research very closely when I had a celica and you guys know your shit! I expect great things from you and I hope you have fun doing it

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Old 07-04-2012, 11:42 AM   #25
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Nice, thanks for posting.
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Old 07-04-2012, 11:46 AM   #26
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Quote:
Originally Posted by Illusive View Post
We finally got 2500 miles or so on the FR-S and got some fresh oil in the car. Here's the updated dyno and our new baseline:



Both runs were done in 5th, and runfile 007 is the last dyno we did in 5th while the motor was still new (250 miles or so). Runfile 015 is after break-in and fresh oil
Just saw this!

Thanks for posting this up.

I think the gain is most likely from the advance multiplier increasing allowing the car to run more timing.
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Old 07-04-2012, 11:59 AM   #27
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So Im guessing that we have to drive the car until it reaches about 2,000 to 3,000 miles on the ODO to get more hp & tq
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Old 07-04-2012, 12:31 PM   #28
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So Im guessing that we have to drive the car until it reaches about 2,000 to 3,000 miles on the ODO to get more hp & tq
Yup - this is normal. As motors loosen up and break in they make a little more power and get better fuel economy. I've had some new cars still gain economy bit by bit all the way to 15,000 miles before they plateau.
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