MogLux wrote:My marks adaptor comes loose and strips bolts out of it all the time.... I know a lot that have the same problem, big white fridges marks adaptor lasted 10 mins at TTC 2011 before it ripped every bolt out of it... They leak, I have to tighten mine every trip.. I have braced mine back to the T700 mounts to try and stop it from twisting but nope....
Sorry, but that doesn't really make sense. I don't have any of Marks stuff so can't comment on the quality BUT the torque is transferred from the gearbox output shaft, through the coupler (in the Marks adaptor) to the transfer case input shaft. The coupler is obviously intended to spin on its bearing to do this. It's the two shafts and the coupler that do the twisting, not the adaptor.
If the adaptor is working lose, it can only be that the engine mounts allow the engine to twist more than the transfer mounts allow the transfer to twist (or vice versa). I chose to use the Advanced Adaptors through Locktup but they would do exactly the same thing in your situation. Given that your rig is for comps, you could try hard mounting the engine, box and transfer. Should fix the problem - unless your chassis twists.
I'm not affiliated with Marks in any way but they've only given me helpful advice in the past and I think it's great that some Aussies are having a go. I would recommend red loctite and spring washer and blue rtv but I imagine you already got that covered.