Question about 2003 Jeep Wrangler
My jeep runs great but if you step down when it shifts it will not clime over 4000 rpms for nothing and wont climp big hills
Anything over 4K is pretty much above the useful torque curve of the engine. Therefore more rpm's will not do you as much good as you might think. If you intend to do any hill-climbing, you will need to begin by changing both front and rear gearsets (if you have say, 3:23's, go to 4:11's etc) You will also need to do some engine mods such as a different camshaft, headers etc. (this will alter torque curve)
Factory gears are generally installed to accommodate a certain region where the vehicle was originally sold. If the region is flat, then the gears will not work well in high terrain.
If you are not hill climbing and just have occasional problems with hills, There isn't really much you can do about it especially if you have a four cylinder in there. One thing though is that if you have oversized tires, get rid of them...they change your final drive ratio and definitely will influence your performance.
Posted on Sep 05, 2009
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Posted on Jan 02, 2017
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