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  1. #1
    Regular Member Christopher's Avatar
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    What rpm to shift at...

    As the title suggests... I am 16, and drive my parents 2002 wrangler tj 4.0l manual(still on my permit), and I know what rpm I CAN shift at, but I am wondering what rpm I SHOULD shift at. I guess what I am asking is: Should I shift a bit on the early side? Or a bit on the late side? I am not looking for fuel economy, but rather what is best for the engine.

    In tidying up the question: Should I give the engine a bit more gas at lower rpms or a bit less gas a higher rpms -- If I want what's best for the engine?

    I have 2 schools of thought: Keeping the rpms low to keep wear and tear off things like cylinder rings and such... Or keep the rpms a bit higher to keep mechanical torque stress of components such as the connecting rods?

    Sorry if that was a bit wordy...

  2. #2
    Super Member Fly bye's Avatar
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    Re: What rpm to shift at...



    I shift at 9k in my car. The higher the rpms, the more gas you'll need to give it, otherwise it will be revving higher for a longer duration.






  3. #3
    Regular Member Christopher's Avatar
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    Re: What rpm to shift at...

    Quote Originally Posted by Fly bye View Post

    I shift at 9k in my car. The higher the rpms, the more gas you'll need to give it, otherwise it will be revving higher for a longer duration.




    My redline is about 5.4k
    For normal driving, not for heavy acceleration

  4. #4
    Super Member DARK HORSE's Avatar
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    Re: What rpm to shift at...

    Quote Originally Posted by Christopher View Post
    As the title suggests... I am 16, and drive my parents 2002 wrangler tj 4.0l manual(still on my permit), and I know what rpm I CAN shift at, but I am wondering what rpm I SHOULD shift at. I guess what I am asking is: Should I shift a bit on the early side? Or a bit on the late side? I am not looking for fuel economy, but rather what is best for the engine.

    In tidying up the question: Should I give the engine a bit more gas at lower rpms or a bit less gas a higher rpms -- If I want what's best for the engine?

    I have 2 schools of thought: Keeping the rpms low to keep wear and tear off things like cylinder rings and such... Or keep the rpms a bit higher to keep mechanical torque stress of components such as the connecting rods?

    Sorry if that was a bit wordy...
    I do not have have any experience with a jeep, but I would think around town driving 2.5K to 3K would be appropriate.

    Quote Originally Posted by Fly bye View Post

    I shift at 9k in my car. The higher the rpms, the more gas you'll need to give it, otherwise it will be revving higher for a longer duration.
    Are you sure you shift at 9K?? If so what are you driving, an F16???
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  5. #5
    Super Member Southern Stang's Avatar
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    Re: What rpm to shift at...

    I agree with dark horse. I'd rather shift at a higher rpm, and not lug it too much but not busting her balls either. Unless I'm trying to be quiet as im a bit loud, then I tend to lug it. Just all personal preference. I also have mood swings where I'm very playful and let the pony run aswell.
    2008 honda cbr1000rr
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  6. #6
    Super Member DARK HORSE's Avatar
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    Re: What rpm to shift at...

    The rev limiter on my "09" Pony kicks in at about 6500-6800 rpms...
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  7. #7
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    Re: What rpm to shift at...

    When I was learning I was told to shift at every 10mph. Example start - 10mph 1st gear, 10mph - 20mph 2nd gear, etc. Not every vehicle has a tach (most older cars).

    I like your logic Tad, shifting at 9k must be some sort of fighter jet! Must be riding a crotch rocket hitting 9k rpm's.
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  8. #8
    Super Member CEE DOG's Avatar
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    Re: What rpm to shift at...

    Both Saturn SL's actually have an orange light that says "shift" It pops up every time its time to.... yep shift.

    When I'm feelin froggy I shift at between 5k and 6k in my Sky (really at about 5K). Normally probably around 3.

    When I had my kawasaki back in the day I might of hit 9K. I forget how high that thing went!
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  9. #9
    Super Member Dubbin1's Avatar
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    Re: What rpm to shift at...

    Quote Originally Posted by DARK HORSE View Post
    The rev limiter on my "09" Pony kicks in at about 6500-6800 rpms...
    Man those are baby rpm's, I used to shift my sbc at 9500. Of course that was a full blown race motor but still

  10. #10
    Super Member DARK HORSE's Avatar
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    Re: What rpm to shift at...

    Quote Originally Posted by Dubbin1 View Post
    Man those are baby rpm's, I used to shift my sbc at 9500. Of course that was a full blown race motor but still
    I'm pretty sure his Jeep Wrangler does not have a full blown race motor, but still
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