I saw it mentioned twice in the new jeep thread, and it always perplexes me. At 2000 rpm, on the highway, especially under load the 8th (double overdrive) drones.
Now the motor is an I6, which ought to be smooth, and BMW uses it and the zf8 in everything because a base drivetrain that doesn't get complaints is what you want to move lots of boxes. I don't think this engine or tranny, or combo does the the 4 cylinder drone imitation in anything else. What did Ineos do that elicited this wonderful feature? Is it the exhaust somehow resonating with the drive train? If I keep it from shifting to 8, there's a little bit of something, but whatever is pairing up to create the drone never really comes to full fruition. I feel like going to a shop and asking for the quietest most restrictive exhaust box that will fit to see what happens, because I don't know how they did it.
Now the motor is an I6, which ought to be smooth, and BMW uses it and the zf8 in everything because a base drivetrain that doesn't get complaints is what you want to move lots of boxes. I don't think this engine or tranny, or combo does the the 4 cylinder drone imitation in anything else. What did Ineos do that elicited this wonderful feature? Is it the exhaust somehow resonating with the drive train? If I keep it from shifting to 8, there's a little bit of something, but whatever is pairing up to create the drone never really comes to full fruition. I feel like going to a shop and asking for the quietest most restrictive exhaust box that will fit to see what happens, because I don't know how they did it.
). I suspect that both shafts have an imbalance. But it could also be due to the tensioning! Removing the front cardan shaft had a stronger effect. I wonder if the (too) strong bending angle of the front shaft might have something to do with it? As already described, there is little interest on the part of Ineos customer service in investigating the matter, giving a technically correct answer or similar. Has anyone had their shafts re-balanced? Or has anyone had one or both shafts replaced? (at best with success?)
