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RPMs and upshifting

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Old 05-19-2010 | 06:10 AM
  #1  
macbitters's Avatar
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Default RPMs and upshifting

ok, bear with me as this may be the very definition of a dumb question but I'm curious:

On average, at what RPM do you upshift? (I'm talking about 2H on normal road conditions)

I have a stock X 2010 manual 6spd 2dr.

I've been driving stick for 20 years but always light sports-type vehicles, which I tend to push to higher RPMs a bit before shifting - this has just become second nature. I have read the manual and it does provide a matrix for shifting based on kms/hr - however I find that this would require shifting at pretty low RPMs. On the highway, I find that I need to be going at least 120 kms/hr to justify putting it in 6th gear (at which point the RPMs may hover around 2500).

Is there a 'sweet spot' for RPMs that my jeep likes to be shifted at? I read one post that this might be as low as 2300-2800 but I'm looking for some jeep jedi opinions here.

Thanks all,

'bitters
Old 05-19-2010 | 06:16 AM
  #2  
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depends on axle ratio and tire size, i run 1800rpm shifts in town. i just ease up to speed. Makes a difference in milage with this 3.8L
Old 05-19-2010 | 06:23 AM
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As a point of reference I have stock 3.21 gears with 225/75R16 tires (hopefully not for too much longer hehe)
Old 05-19-2010 | 06:29 AM
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it'll drive much different than my 4.10s and 35s. So my info isn't too useful
Old 05-19-2010 | 06:44 AM
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i have a 6 speed and 3.21 gears. (Until Thursday when i get 3.73's)

You are right that 6th gear is fairly ueless unless you are going 75mph. Around town, relaxing, I shift right at 2000-2200rpms and conserve gas. Freeway merging and passing, I can rev up to 4500-5000rpm to get some power. The 3.21 are the softest gears and you really have to sit back and wait when you floor it. Takes a long time for power to build. That issue was non existent when I tried 4.10 gears.

Last edited by plac; 05-19-2010 at 08:05 PM.
Old 05-19-2010 | 06:48 AM
  #6  
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I'm running a Sport with 3.21's and shift about 2500-3000rpm's depending. I may go up to 4000rpm's if needing to get more of the power band

Good luck
Old 05-19-2010 | 07:02 AM
  #7  
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From: GRANDE PRAIRIE, AB
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I find it smoothest around 2k, but also slowest accel. so for times I have to merge and get up to speed I wind it out and deal with the jerky shift.
Old 05-19-2010 | 07:57 AM
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Interesting - thanks for the contributions everyone
Old 05-19-2010 | 08:12 AM
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I usually shift around 2000-2500 maybe 3000 on an uphill.
Old 05-19-2010 | 12:57 PM
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I shift at around 2800-3000 RPMS. I have 3.21 with 34 inch tires. 6th gear doesnt exist any more.



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