quote:Originally posted by Bosswrench: One more area that sometimes affects shifting, and has nothing to do with the ZF. If the motormount rubbers are deteriorated, the engine can shift around relative to the shift-shaft support under the left header.
Thanks Jack. It’s getting to be a long thread but I have inspected the isolators. They are rubber not urethane and look great at least as far as visual inspection. They were replaced with new 7k miles ago. I need to put a wrench on the bolts and see if they are pulled up where they should be. I’ll probably measure their compressed height and see if they are moving around. In addition to a list of other things, I’m going to get it on the lift and observe the linkage motion and also take some reference measurements to the frame and see if I can detect movement. Going to try to do one thing at a time to isolate issue.
quote:This area NEVER gets lubed and can bind up when the powertrain moves……..Conversely, I've found Panteras in which the shift shaft support nut loosened up, causing the exact same problem as the support moved. Only takes a minute to check...
As mentioned earlier, I have checked the trunion support and it is secure. I also have the PPC spherical rod end conversion that has the shifter rod replaced by a close tolerance stainless rod (splines welded back onto ends) that then slides in a thin oilite bronze bushing pressed into the spherical rod end that replaces the standard trunion. It doesn’t require lube and I don’t lube it because that would cause fouling by collecting dust and debri. It slides freely and maintains very precise geometry.
Best,
K