My fairly-new-to-me -6 conversion has a Patrick Motorsport linkage. I would politely offer that it's not their finest piece of work. One of its shortcomings is that the firewall bearing is a spherical bearing in an aluminum holder. Thus there's metal to metal contact and after what I think are less than 1800 miles there is noticeable wear on the shift rod/tube.
I can see the logic behind using a spherical bearing; it allows for any slight misalignment of the rod from horizontal. But the metal to metal contact is crazy.
Any thoughts on an alternative solution?
Attached thumbnail(s)
Mine uses a plastic spherical bearing but I open the ID to fit a stock tunnel shift rod. My unmodified bearing might fit in the PMS housing though.
I have the same PMS setup on my six. I think its the same as the one on speedway which is 3/4" ID. https://www.speedwaymotors.com/Firewall-Mount-Steering-Shaft-Bearing-3-4-Inch-Shaft-Size,6845.html
That’s a great find @http://www.914world.com/bbs2/index.php?showuser=822 - looks identical. The shift rod is indeed 3/4” in diameter and the bearing’s OD is 1 7/16”. And note it’s meant for a steering shaft that merely rotates, not a shift rod that slides in and out.
@http://www.914world.com/bbs2/index.php?showuser=209 , what are the dimensions of your bearing?
I have found products like https://www.igus.co.uk/product/391?artNr=EGLM-20 and https://www.igus.co.uk/product/381?artNr=EFOM-20 but they’re all either for 17mm or 20mm shafts.
My 6 converted vintage race car uses Chris's bearing and behind the firewall rod and shift console thingamabob. Lot's of fun well engineered stuff.
In the short term I’m tempted to get a small piece of Delrin play to replace the entire bearing. Longer term I’ll need something more permanent.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)