The last manual trans I owned was an 87 Celica GT, which I could run to red on every gear and no worries. Last car I ownded before getting the Jeep was on '07 G35, auto - which had plenty of get up and go....
Now onto the JK, manual....I feel like if I go above 4k RPMs that I'm going to blow my engine up (even though it doesn't red line for awhile).
Question: Where are you all shifting at in your JK? Any advice or lesssons learned on shifting in general?
The 3.8 seems to make the most torque at around 4k rpm - so when you shift really depends on what you're trying to do.
I agree completely with Vin - shifting at 2.5-3k seems to get the best mileage and shifting at the top of the torque band while heaps of fun, is much like pouring gas on the ground.
I have a 2dr Rubi manual, and I do a lot of up and down here in the mountains, so the 'lesson learned' from me would be - don't be afraid of RPM, going up a 6-7% grade, you'll be in 4th and hovering around 3.5-4k for the duration and getting about 16-18mpg.
The same is true going down hill, if you put it in 5th and set the cruise at 60, it'll just hang out at that speed due to compression without really using any gas. I can get 22-23mpg average (calculating the 16-18mpg to get to the top in the first place) on the down-hill sides of Vail or Loveland pass.
Cool - yeah, i've been shifting right around 3k for my day-to-day driving. As I get up close to 4k, I guess I've just got to get used to the sound of the engine. Coming off of a rice burner with 306hp is a huge difference with the sound of the growl. Thanks guys.....
If I'm just driving around with no particular place to go I generally shift at about 2500-3000 . If I have to get somewhere or enter traffic I'll shift anywhere up to about 5000 . It actually does growl a bit after 3000 and up but you can feel a bit of power after the 3000 mark .
So it really doesnt hurt to rev to motor close to the red line?
I can honestly say I have many times and with 65,000km+ on the clock my Rubi still runs smooth and quiet . I do over kill on my oil changes trying never to exceed 3000km even though I use synthetic oil and the Fram synthetic filtre . I was one time driving north for a job and had the tunes going had the JK in 5th at 4000rpm for about an hour before I realized what I was doing ....that was about two years ago ....still no ticking and smooth .....Just sayin' and that was about half way through a 9hr. drive north of Winnipeg past Thompson ........