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Ideal shift RPM on h22?

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Old Nov 18, 2003 | 11:58 AM
  #1  
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Default Ideal shift RPM on h22?

Here is my torque on the wheels for my stock H22 4G:



Here you can see that you should go all the way to the redline and then shift. At least shifting from 1,2,3 up. Shifting from 4->5 should be probably done a bit sooner.

What do you think?
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Old Nov 18, 2003 | 06:39 PM
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Default Re: Ideal shift RPM on h22? (petrv)

hmm intersting i dounno man hmmm still thinking......
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Old Nov 18, 2003 | 08:17 PM
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Default Re: Ideal shift RPM on h22? (Anhjockz)

i shift at 6800 rpm
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Old Nov 18, 2003 | 09:17 PM
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Default Re: Ideal shift RPM on h22? (H22A EG6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22A EG6 &raquo;</TD></TR><TR><TD CLASS="quote">i shift at 6800 rpm</TD></TR></TABLE>

This is not good for performance.
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Old Nov 22, 2003 | 03:02 PM
  #5  
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Default Re: Ideal shift RPM on h22? (petrv)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by petrv &raquo;</TD></TR><TR><TD CLASS="quote">

This is not good for performance.</TD></TR></TABLE>
what the thwe hell are you talking about! peak hp in the H22A is 6800 rpm
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Old Nov 22, 2003 | 03:12 PM
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Default

yeah that may be the peak hp and/or TQ but you wanna rev a little higher and shift at redline to stay in VTEC mode. hell, i shift at redline and still drop out of VTEC in my 1st to 2nd shift. the rest i can stay in. need a V-AFC
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Old Nov 22, 2003 | 04:07 PM
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Default Re: Ideal shift RPM on h22? (H22A EG6)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22A EG6 &raquo;</TD></TR><TR><TD CLASS="quote">
what the thwe hell are you talking about! peak hp in the H22A is 6800 rpm</TD></TR></TABLE>

So what what if peak rpm is 6800. By implication you're saying that's where you shift - no. You shift at the point such that there is maximum area under the curve, from the rpm where you shift, to the rpm the engine drops to in the next gear. Go read the Smith series of books.
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Old Nov 22, 2003 | 04:12 PM
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Default Re: Ideal shift RPM on h22? (kb58)

when i shift at 6800 i stay in vtec
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Old Nov 22, 2003 | 05:14 PM
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Default Re: Ideal shift RPM on h22? (H22A EG6)

That doesn't have anything to do with it. It's all about area under the curve. Go read Prepare To Win and Tune To Win by Smith. They figured this out long ago.
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Old Nov 22, 2003 | 10:53 PM
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yea stupid....so if a car has max torque at like 3800rpm do u shift there?? ahhahaha its doesn't have anythin to do wit shiftin at max torque
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Old Nov 23, 2003 | 12:24 AM
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Default Re: (s2000RiCeR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s2000RiCeR &raquo;</TD></TR><TR><TD CLASS="quote">yea stupid....so if a car has max torque at like 3800rpm do u shift there?? ahhahaha its doesn't have anythin to do wit shiftin at max torque</TD></TR></TABLE>
Know **** Stupid!!
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Old Nov 23, 2003 | 12:28 AM
  #12  
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Default Re: (s2000RiCeR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s2000RiCeR &raquo;</TD></TR><TR><TD CLASS="quote">yea stupid....so if a car has max torque at like 3800rpm do u shift there?? ahhahaha its doesn't have anythin to do wit shiftin at max torque</TD></TR></TABLE>

It has something with max torque...but with max torque ON THE WHEELS, which the graph shows. It also shows that you should shift at maximum RPM possible to have max. acceleration.
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