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Old 10-16-2015, 08:54 PM   #1
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Track race

So when i hit up the track, when should i shift at a certain rpm?

I shift at 5100-5200k rpms... Could i go higher or will i just go slower


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Old 10-16-2015, 09:05 PM   #2
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Car makes peak horsepower around 5400rpm. After the it drops off.


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Old 10-16-2015, 11:06 PM   #3
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Car makes peak horsepower around 5400rpm. After the it drops off.


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So 5400 around there is when i should


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Old 10-16-2015, 11:24 PM   #4
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Also at a track what do I need to do to make sure i wont break it.

Like help my chances in not breaking anything. I wanna do a couple runs, without risking anything


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Old 10-16-2015, 11:30 PM   #5
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I'm sure you've driven it hard on the street before. Same as usual. Pretend there is a merge up ahead and just go for it. You won't break anything unless you have major traction.
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Old 10-16-2015, 11:54 PM   #6
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I would try and shift around 5,800... Keeps the revs up when you shift to stay closer to the peak power band


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Old 10-16-2015, 11:55 PM   #7
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I'm sure you've driven it hard on the street before. Same as usual. Pretend there is a merge up ahead and just go for it. You won't break anything unless you have major traction.

Oh yea, bout every weekend.. I know the launch for stock subframes is 2500-3000.

I just want to see what i can run, and have the car in one piece.


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Old 10-17-2015, 12:15 AM   #8
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I would try and shift around 5,800... Keeps the revs up when you shift to stay closer to the peak power band


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I wont go slower? I wanna shift at the right time. Make sure i can get every bit of speed


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Old 10-17-2015, 12:26 AM   #9
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5400, by the time you shift you'll be close to 4k which is peak torque for 2vs


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Old 10-17-2015, 02:07 AM   #10
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5400, by the time you shift you'll be close to 4k which is peak torque for 2vs


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So, what do you think? Ive been researching a lot. And i seem to can't find anything on good shifting points for 2v.


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Old 10-17-2015, 07:56 AM   #11
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I shift at 5400


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Old 10-17-2015, 01:15 PM   #12
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I shift at 5400


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Alright, i will just keep it at that.


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Old 10-18-2015, 10:47 AM   #13
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You can shift as high as you want. But really 5400 rpms is the best place to shift. It will lock you out of gear if you rev it up to 6250 and "power shift" and you will F up synchros. Plus that is where hp peaks.


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Old 10-18-2015, 01:07 PM   #14
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Well its not about peak hp you want but peak torque


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Old 10-18-2015, 01:09 PM   #15
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You can shift as high as you want. But really 5400 rpms is the best place to shift. It will lock you out of gear if you rev it up to 6250 and "power shift" and you will F up synchros. Plus that is where hp peaks.


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I know cammed you could go higher right?


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Old 10-18-2015, 02:37 PM   #16
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I think cams? Valve train, and maybe intake manifold. Then rev it to 7k if you want. But that's still a lot of rpms for a 8 cylinder. Haha. Idk.


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Old 10-18-2015, 03:27 PM   #17
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Lol number of cylinders doesn't limit rpm... In the past formula 1 cars were 8s turning 15,000 plus rpms... It's other factors that limit the rpm range


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Old 10-18-2015, 07:46 PM   #18
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Lol number of cylinders doesn't limit rpm... In the past formula 1 cars were 8s turning 15,000 plus rpms... It's other factors that limit the rpm range


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Rods etc


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Old 10-18-2015, 11:25 PM   #19
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5.0 coyote revs to 7500rpm safely. Do valve springs and you can go above 8k.

I know a guy with a build 4.6 2v who takes his past 9k rpm, cast crank also.

Valvetrain and how well balanced the internals are is what matters.
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