When do you shift? - JeepForum.com

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post #1 of 33 Old 02-18-2010, 08:35 AM Thread Starter
JEEPBURGH
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When do you shift?

I have a 4 cylinder TJ and as we all know I didn't buy if for power!
I just wanted to take a talley on how high people run ther RPM's before they shift. I've been shifting between 3000-4000 RPM's and I tend to get a bit more power in 3rd-5th at higher RPM's. Did I mention that my TJ is a 6 speed?

Thanks!

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post #2 of 33 Old 02-18-2010, 09:10 AM
TheBoogieman
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when do you shift?

When I see a cloud of smoke coming from the rear.
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post #3 of 33 Old 02-18-2010, 09:43 AM
Dmcastino
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3-4k is probably a lil high to shift you are looking for decent mileage (well decent considering its a Jeep). I probably shift a little high for good mpg too and I shift between 2500-3000 usually, but I am driving a 6 cyl with a 5 speed
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post #4 of 33 Old 02-18-2010, 09:45 AM
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Depends on the situation and how lazy I'm feeling that day...
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post #5 of 33 Old 02-18-2010, 09:46 AM
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mine shifts for me.

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post #6 of 33 Old 02-18-2010, 09:55 AM Thread Starter
JEEPBURGH
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No automatics!!!!
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post #7 of 33 Old 02-18-2010, 10:00 AM
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Your 4 banger makes its power up high, so you should be shifting in the 3-4k range. It won't effect your mileage like some will say. Your mileage will be poorer if you lug the engine and shift at 2k. With 4.88's, 35's, 4.0, and NV3550 I shift in the 2.5-3k range. I'm not a fan of lugging the engine and I get better mileage than most.

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post #8 of 33 Old 02-18-2010, 10:01 AM
patricknolan
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between 2300 and 3300. I only really need the higher end 3k and up when im in 3rd gear, or 4th gear. I dont use 5th gear
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post #9 of 33 Old 02-18-2010, 10:03 AM
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Between 2,200 and 2,500 rpms around town, 3,000 rpms when I am on a on ramp for the highway, but I have a 4.0 with 4.56 gears.

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post #10 of 33 Old 02-18-2010, 10:04 AM
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I dont have the 4 I have the 6cyl 6 speed, but I still usually shift around 2200-3000 for mileage purposes. And I rock the nonsense out of 6th gear. I feel like on the highway and even around 50 mph there is alot of power in sixth still. I am running 3.73 gears though so I dont know if that matters....

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post #11 of 33 Old 02-18-2010, 10:06 AM
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when i hit the rev limiter.......

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post #12 of 33 Old 02-18-2010, 02:05 PM
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Quote:
Originally Posted by JEEPBURGH View Post
I have a 4 cylinder TJ and as we all know I didn't buy if for power!
I just wanted to take a talley on how high people run ther RPM's before they shift. I've been shifting between 3000-4000 RPM's and I tend to get a bit more power in 3rd-5th at higher RPM's. Did I mention that my TJ is a 6 speed?

Thanks!
Even though many will answer, the question as asked has no correct answer.
You do not shift at a certain same rpm each time.
For each gear change it will be different (you typically rev higher between 1-2 and 2-3 shifts than you do for 4-5 and 5-6), and for different driving situations the appropriate shift point will be different.
For example, when you pull onto the freeway you need to rev between shifts to get up to speed quickly.
But when you just turned onto a street and are going to have to stop at the light a half block down, what sense does it make to rev to 4 grand?
EVERY single shift, EVERY time, must be decided by you; shift early because not much power is needed or economy is desired, rev high to accellerate quickly, or - typically - somewhere in between.
Note that shifting too early can actually reduce mileage due to lugging the engine. Listen for it, the engine will tell you when it's not breathing well.
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post #13 of 33 Old 02-18-2010, 02:18 PM
jdub2k5
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in most my cars I shift at the same rpm in every gear the jeep is weird in the sense that I change gears at random rpms.

I try to stick to around 3k-3.5k(power for the next gear, good exhaust sounds, and smooth shift)

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post #14 of 33 Old 02-18-2010, 02:21 PM
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i have 4.0 6 speed and i shift just ~ 2100

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post #15 of 33 Old 02-18-2010, 02:27 PM
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As said before it depends on the situation but in general, on an open road always over 3k in my 4 cylinder. Lugging the engine is worse than revving it up a bit more.

I usually even take my 4.0L to 3k on a regular basis. And my Civic sees anywhere between 4k and 8200, based on my mood and desire for adrenaline.

'The early bird may get the worm, but the second mouse gets the cheese.'
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