08-16-2017, 07:37 PM | #111 | |||
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08-16-2017, 10:50 PM | #113 | |
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08-17-2017, 03:02 PM | #115 | |
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For ///M cars in particular the two main things that make it stand apart are its engine and its chassis. Of course its about the complete package and design too, but the most important things are those two. I do realize that for some people the car is what ever the manufacturer wants it to be and they just accept that. But Porsche is good example here. They constantly use the flat 6 boxer engine, but with every new generation or LCi they make significant changes to the engine and make it almost like a completely different engine even though, they're all the same setup. The new .2 GT3 is a perfect example of this, it's a far different engine than the .1 GT3 engine. M division could have at the very least raised the redline of the S63xx engine for the F90 M5 to 8,000rpm to make it different than the F10 M5 engine, but no, instead they just added a new water pump, a couple of slightly different turbos, and minor changes that don't significantly make it all that different.
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08-17-2017, 04:54 PM | #116 | ||
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Don't expect 7200rpm redline or higher this time either. ZF max engine speed is rated at 7000, plus the S63B44T2 (X5M/X6M) has only a 6800rpm redline. Though I do expect the new M5 to be right at 7000. Oddly enough AutotopNL posted a tuned M5 acceleration video today and I noticed this one has the +200rpm raised redline, you can see a couple times him shifting right around 7400. Best example is ~1:55. |
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08-17-2017, 06:51 PM | #117 | ||
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But I think you underestimate how game changing the chassis improvements can be. If this car has 4 wheel steering and all wheel drive it will drive like an M3 with the power of an M5 and be able to get all that power down. That will be pretty amazing.
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08-17-2017, 11:09 PM | #118 | |||
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I hope the F90 LCI looks more like the F10. Lol. |
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08-18-2017, 10:00 AM | #120 | |
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08-18-2017, 11:50 AM | #121 | |
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08-18-2017, 12:46 PM | #123 |
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Indeed. The original McLaren 12C also revved to 8,500rpm. Turbo engines can have redlines as high as NA engines no problem. The challenge is tuning the software and the turbos. The turbos usually will only produce useable power and torque in certain ranges, but with good tuning almost anything is possible. Also the block and internals have to be built to handle those rpms. The major problem with the S63xx is that all of the internals are cast, but even so the the M550i and the F90 M5 have the same exact internals yet the M division tuned to the M5 to rev higher. The M5 has more powerful turbos though and can use the rpms better too. Higher revving engines are more easily achieved with smaller displacement engines and engines with a shorter stroke or a flat plane crank can rev a lot higher. My idea for a new M5 engine is theoretically for me totally implementable if BMW had the will to design it. I wanted M Division to develop an all new 3.0L V10 Twin Turbo engine that can rev to at least 8,000rpm. It probably wouldn't have as much torque but if they instead would have concentrated more on chassis weight reduction then it wouldn't have mattered if torque was below 500lbs/ft. Then at least we could have had an engine that could easily produce 600-700hp revs high, better on fuel consumption because smaller displacement, and sounded unique and glorious when revved. Weight of the car would had to have come down to less than 4,100lbs though.
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08-18-2017, 12:55 PM | #125 | |
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By way, barring E63 and the AMG GT no AMG beat their M counterparts and I am confident the F90 will address the E63. |
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08-18-2017, 03:28 PM | #127 |
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08-18-2017, 04:08 PM | #128 |
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More than likely floating rear caliper, just like the last M5.
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08-18-2017, 04:10 PM | #129 | |
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08-18-2017, 04:19 PM | #130 |
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08-18-2017, 04:26 PM | #131 |
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Corvette has dual fixed calipers. Porsche 911. I believe the Camaro ZL1, 1LE, and Mustang GT350 have dual fixed calipers. And of course the M3/4, Giulia QV, ATS-V (and Lexus RC-F?) have them.
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08-18-2017, 04:29 PM | #132 | |
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