6 speed shifting question
06-11-2011, 07:00 PM
#21
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Was curious what everybodies thoughts were in regards to what RPM's to shift at. My father in law is telling me to shift between 3k to 3500, I am usually shifting at 2k to 2500.
I get better gas mileage running it between 2k to 2500. However, my father in law is stating that the jeep runs better when you are running it at a higher rpm minus the gas consumption.
Thanks for any help in advance
I get better gas mileage running it between 2k to 2500. However, my father in law is stating that the jeep runs better when you are running it at a higher rpm minus the gas consumption.
Thanks for any help in advance
That said, my normal power-band shifting was at 3,000 RPM for 1st and 2nd, 2500 for 3rd and 4th and roughly 2250 for 5th and 6th. As long as I kept my top speed below 65 mph and no AC, I averaged 20-21mpg on the highway and about 17.5mpg in-town. My 2,000 rpm short shift doesn't improve my highway mileage but my in-town mileage crept up to 18.7 and I've been pretty happy with my Jeep.
Love the fact it can handle the Blue trails at Rousch Creek still factory stock.
06-11-2011, 07:03 PM
#22
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You will burn synchros and grind gears if you aren't spot on. Save the wear on your transmission and use the clutch. I dont know where you get "Most" from, my guess is the drivers that run company trucks. An owner-operator would never do that to his own equipment. Grew up in a trucking family, and matching gears is a novelty to do when youre bored and trying to stay awake, not a common thing.
Semis dont have synchros for the most part, at least not the eaton trannies my father used to run, so it wasn't as huge of a concern.
Semis dont have synchros for the most part, at least not the eaton trannies my father used to run, so it wasn't as huge of a concern.
06-11-2011, 07:14 PM
#23
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Originally Posted by Blakspire
You will burn synchros and grind gears if you aren't spot on. Save the wear on your transmission and use the clutch. I dont know where you get "Most" from, my guess is the drivers that run company trucks. An owner-operator would never do that to his own equipment. Grew up in a trucking family, and matching gears is a novelty to do when youre bored and trying to stay awake, not a common thing.
Semis dont have synchros for the most part, at least not the eaton trannies my father used to run, so it wasn't as huge of a concern.
06-11-2011, 07:50 PM
#24
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Originally Posted by superjk10
2500rpm is my shift point sumtime i like to bring it to 4500rpm tho lol.. here in town everywhere I go is pretty much flat.. I never use the first gear unless im totally stopped in a hill or offroading.. am I the only one??
I dont use first gear as well .
06-12-2011, 05:49 AM
#27
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I dont know where you get "Most" from, my guess is the drivers that run company trucks. An owner-operator would never do that to his own equipment. Grew up in a trucking family, and matching gears is a novelty to do when youre bored and trying to stay awake, not a common thing.
Can you float the gears in a Jeep/pickup/car though? Ya, would I? Not unless you're good at it, you will destroy syncro's if you don't know what you're doing, and helical cut gears aren't as forgiving as straight cut gears. When I took an 11 for a test drive the other day it took me a couple blocks to realize i wasn't using the clutch out of habit from work and had no problems.
But knowing how to do it can get you home if the clutch won't disengage.
06-12-2011, 08:46 AM
#28
JK Enthusiast
rpms
I found that shifting around about 2200 rpm is a good comprise on my jeep. 18+ in town. Sure cars race past me but I see them at the next light.
Really it depends on a lot of factors, like whether you're trying for power or economy or somewhere in-between. What with the higher gas prices we've been having, I've been trying to short-shift at 2,000 rpm but this is below the power band so you'll be accelerating relatively slowly; however, I've also seen a 10% improvement in gas mileage. The problem is that when you're running the AC, your power is sapped even farther and the JK feels even more sluggish.
That said, my normal power-band shifting was at 3,000 RPM for 1st and 2nd, 2500 for 3rd and 4th and roughly 2250 for 5th and 6th. As long as I kept my top speed below 65 mph and no AC, I averaged 20-21mpg on the highway and about 17.5mpg in-town. My 2,000 rpm short shift doesn't improve my highway mileage but my in-town mileage crept up to 18.7 and I've been pretty happy with my Jeep.
Love the fact it can handle the Blue trails at Rousch Creek still factory stock.
That said, my normal power-band shifting was at 3,000 RPM for 1st and 2nd, 2500 for 3rd and 4th and roughly 2250 for 5th and 6th. As long as I kept my top speed below 65 mph and no AC, I averaged 20-21mpg on the highway and about 17.5mpg in-town. My 2,000 rpm short shift doesn't improve my highway mileage but my in-town mileage crept up to 18.7 and I've been pretty happy with my Jeep.
Love the fact it can handle the Blue trails at Rousch Creek still factory stock.
06-12-2011, 09:35 PM
#29
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