fool4wheelin
03-24-2008, 08:34 AM
I just joined this board, looks like a GREAT place for owners and enthusiasts. I’m very interested in purchasing a Patriot and I have a few questions to ask.
Does anybody know what the difference is between the CVT2 and the CVT2L and where the extra gear ratio comes from to get 19:1 over the 14:1? I’ve read somewhere that the CVT2L has a higher final drive ratio, thus affecting the gearing at all speed ranges. This makes sense, but this would be a downfall for higher speed MPG’s as a lower engine speed equals better fuel economy. What is the engine speed when going down the road with the CVT2L at 60 mph (compared to the CVT2)?
Is the 19:1 enough in the Patriot? I believe the CVT2 and CVT2L also utilize lock-up torque converters, so at very low speeds there is another 2-3 times the torque multiplication just from the torque converter. Right now I own a 1998 Cherokee 4.0L w/AT, and these Patriots look like quite the upgrade. I like the solid axles, ground clearance, and the ample torque for off-roading in the Cherokee, but all the electronic gizmos, fuel economy, and ride quality look like very good trade-offs in the Patriot. In my Cherokee I have 1st gear, T-case, and Axle ratios of 2.80:1, 2.72:1, and 3.55:1. This gives me overall drive ratios of 10:1 in HI and 27:1 in LO, not to mention I have the torque converter multiplication effect on top of that.
The 2008 Patriot Literature specs out the CVT ratio range to be 2.35-0.39 (:1). They then list an overall top gear ratio of 2.41 for the CVT2 and 3.21 for the CVT2L. Looks like they’re missing an extra reduction in there somewhere because those numbers don’t combine to get 14:1 or 19:1. Perhaps someone could educate me on where a front wheel drive vehicle has all of the gear reductions in comparison to a traditional rear wheel drive vehicle. Seems to be another 2.47:1 reduction in there somewhere for both the CVT2 and CVT2L (unless they count the multiplication effect from the torque converter). Interestingly enough, the manual for the Patriot’s is listed with a 1st gear and final ratio of 3.77:1 and 3.34:1, which adds up to 12.5:1, without the extra reduction that appears to be in the CVTs…
Does anybody know what the difference is between the CVT2 and the CVT2L and where the extra gear ratio comes from to get 19:1 over the 14:1? I’ve read somewhere that the CVT2L has a higher final drive ratio, thus affecting the gearing at all speed ranges. This makes sense, but this would be a downfall for higher speed MPG’s as a lower engine speed equals better fuel economy. What is the engine speed when going down the road with the CVT2L at 60 mph (compared to the CVT2)?
Is the 19:1 enough in the Patriot? I believe the CVT2 and CVT2L also utilize lock-up torque converters, so at very low speeds there is another 2-3 times the torque multiplication just from the torque converter. Right now I own a 1998 Cherokee 4.0L w/AT, and these Patriots look like quite the upgrade. I like the solid axles, ground clearance, and the ample torque for off-roading in the Cherokee, but all the electronic gizmos, fuel economy, and ride quality look like very good trade-offs in the Patriot. In my Cherokee I have 1st gear, T-case, and Axle ratios of 2.80:1, 2.72:1, and 3.55:1. This gives me overall drive ratios of 10:1 in HI and 27:1 in LO, not to mention I have the torque converter multiplication effect on top of that.
The 2008 Patriot Literature specs out the CVT ratio range to be 2.35-0.39 (:1). They then list an overall top gear ratio of 2.41 for the CVT2 and 3.21 for the CVT2L. Looks like they’re missing an extra reduction in there somewhere because those numbers don’t combine to get 14:1 or 19:1. Perhaps someone could educate me on where a front wheel drive vehicle has all of the gear reductions in comparison to a traditional rear wheel drive vehicle. Seems to be another 2.47:1 reduction in there somewhere for both the CVT2 and CVT2L (unless they count the multiplication effect from the torque converter). Interestingly enough, the manual for the Patriot’s is listed with a 1st gear and final ratio of 3.77:1 and 3.34:1, which adds up to 12.5:1, without the extra reduction that appears to be in the CVTs…