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BRZ Second-Gen (2022+) -- General Topics General topics for the second-gen BRZ |
View Poll Results: How would you rate the design of the 2nd gen? 1 lowest & 5 highest | |||
1 | 19 | 7.20% | |
2 | 25 | 9.47% | |
3 | 62 | 23.48% | |
4 | 104 | 39.39% | |
5 | 54 | 20.45% | |
Voters: 264. You may not vote on this poll |
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11-24-2020, 09:54 AM | #813 | |
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-In-car tach shows redline occurs at 7500rpm -Peak HP is 228 @ 7000rpm -PR says redline is at 7000rpm One of these is wrong. |
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11-24-2020, 10:06 AM | #814 | |||
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I don't know my oil pressure :O But judging from data from others, should be sufficient with 30-weight full-synth at 275F... Quote:
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Which is why I haven't bothered with the aftermarket oil tube. We have reports of "race" builds not having problems with high-rpm cavitation up to 7600rpm, so for me the risk of aftermarket manufacturer defects plus possible installation errors outweighs the risk of running the stock pickup tube... |
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11-24-2020, 10:07 AM | #815 | |
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11-24-2020, 10:27 AM | #816 |
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I know how gears work but still fail to see how you are getting 2,000 to 2,800 foot pounds at the wheels.
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11-24-2020, 10:34 AM | #817 | |
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All-New 2022 Subaru BRZ Makes Global Debut
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At 3700RPM, the engine is making 184lb-ft of torque. 184lb-ft through first gear is bumped to 668lb-ft through the 3.63 first gear. Through the 4.44 final drive, that gets bumped to 2,965lb-ft. The Hummer EV claims 11,500lb-ft at the wheels. A 3500HD makes 14,129lb-ft at the wheels. The graph I made is a good way to normalize gear ratios and torque curves for different vehicles. Sent from my iPhone using Tapatalk |
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11-24-2020, 10:54 AM | #818 |
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To clarify, I came up with this by making a table that shows torque versus RPM using 500RPM increments and estimating the torque based on what we know from the specs and the cluster displays. Then I made another table with speed from 10-140mph and calculated the engine speed in the ideal gear at all those speeds. Then I looked to my engine speed torque table to see what the torque was at that given engine speed. Knowing the engine torque, gear ratio, and vehicle speed, I now calculated the wheel torque. Do this for all the speeds and the chart I posted falls out. It isn’t perfect but it gives a pretty good idea of the twist you can expect to feel at a given speed so long as you are in the ideal gear.
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11-24-2020, 10:54 AM | #819 | |
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11-24-2020, 11:24 AM | #820 |
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Do we have confirmation of transmission and diff gear ratios?
With ~20% more torque in most of the rev range, I would have assumed overall gearing at least 5% taller vs. current-gen, not 3% shorter! With same transmission ratios, I would have expected 4.1 or 3.9 diff gearing for 2nd-gen... |
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11-24-2020, 11:40 AM | #821 | |
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All-New 2022 Subaru BRZ Makes Global Debut
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I assumed carryover of the 2020 ratios. Gear ratios haven’t been confirmed. I hope they don’t make the gearing taller. These are sports cars, dammit! Sent from my iPhone using Tapatalk |
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11-24-2020, 11:41 AM | #822 | |
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11-24-2020, 11:45 AM | #823 |
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I’m guessing gearing will be optimized for 0-60 for marketing then modified on the refresh for whatever enthusiasts commonly do with aftermarket parts, which most likely is more aggressive gearing.
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11-24-2020, 11:52 AM | #824 |
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No clue why I was thinking 4.4 final drive instead of 4.3. I’ll correct the spreadsheet.
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11-24-2020, 12:12 PM | #825 | |
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I’m sure you would find that a turbo acts as an oil warmer much better than the oil regulator does on the FA20/24F, especially when compared to the oil warming times on NA or supercharged cars, so it is much more of a cooler. The addition of the oil regulator to the FA24D is probably because compression is higher, which can significantly raise temperatures, and because external oil coolers were such a popular mode on this platform for track use.
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11-24-2020, 12:19 PM | #826 | ||
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A lot of what they will do with it will be dictated by emissions and mileage. I know people like to pretend that is meaningless but it is their constraint and they have to compromise. As I said above I completely love the change from the 4.1 to 4.3 but it came at a cost. I drive the same route, the same way every day. My drive is 95% 70mph with cruise on 80% of that time so there is very little fluctuation in mileage. With the FRS my average mileage was an unwavering 32MPG. With the 86 it is now an unwavering 30MPG. I don't care but even though it is only 2MPG you can bet that Subaru/Toyota will! As the requirements get tighter and tighter they will need to scavenge every single MPG they can get and that will be counter to what most "enthusiasts" want from the car.
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