Manual Fast Acceleration
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Joined: Jan 2007
Posts: 28
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From: Chicago, IL
My Ride: '07 manual M5 Black/Black/Tinted, HUD, Heated Rear Seats, Logic 7, iPod interface
I would like to ask at what RPM do manual M5 guys drop the clutch, then shift to 2nd, and 3rd? Also, HUD on manual does not show the best switching time for most optimal acceleration.
How do YOU do it?
Thans
How do YOU do it?
Thans
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Joined: Apr 2008
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From: Northern VA
My Ride: E60 BMW ///M5 V10
always take the M5 to redline. I went to the strip a while back and tried both shifting at redline and shifting slightly before redline (~8000rpm) my trapspeeds while shifting at redline were noticably faster than shifting slightly early
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Joined: Jul 2008
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From: Chicago
Don't you harm a car's engine by taking it to redline frequently?
Nevermind, I found the answer to my own question:
Nevermind, I found the answer to my own question:
excessively high revs stetch the connector rods and stress them unnecessarily. This is more pronounced if you rev the engine without a load (ie winging it in neutral) than if the engine is in gear and revving hard.
Prolonged high revs can also cause oil starvation harm. Potentially all the oil can get pumped out of the pan, especially in hard cornering.
Also bearings, especially plain bearings can 'shear' the oil film that the bearings run on. This causes very bad metal - to metal wear.
Finally you might 'float' the valves, that is, the valve springs cannot close them fast enough before the cam lobe opens them again. Depending on the design of the engine, if a vlve is weak, it can drive the valve into the piston and bend/break it.
Prolonged high revs can also cause oil starvation harm. Potentially all the oil can get pumped out of the pan, especially in hard cornering.
Also bearings, especially plain bearings can 'shear' the oil film that the bearings run on. This causes very bad metal - to metal wear.
Finally you might 'float' the valves, that is, the valve springs cannot close them fast enough before the cam lobe opens them again. Depending on the design of the engine, if a vlve is weak, it can drive the valve into the piston and bend/break it.
Thread Starter
Members
Joined: Jan 2007
Posts: 28
Likes: 0
From: Chicago, IL
My Ride: '07 manual M5 Black/Black/Tinted, HUD, Heated Rear Seats, Logic 7, iPod interface
It is difficult to find just the right rpm to not burn the tires or get a lag in the first gear. The better one on dry is around 3,000
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