QUOTE(nolift914 @ Jun 28 2013, 12:53 PM)
During my second autox with the new 914 I broke the rubber motor mounts. I made a hard launch on my first run of the day when the mounts broke.
Looking for advise on an upgrade of the OEM mounts looking at the GPR aluminum mounts and the Jwest nylon ones.
The motor is a Fat 2258cc type 4.
the stock mounts have a bolt sticking out top and bottom
that bolt is actually 2 bolts bonded into the rubber
its not a single bolt connected.....
so when they fail it is often the rubber has torn or sheered
a great solution is to find a good material (like delrin) and bore a hole all the way through the mount. make the upper and lower bolts of one piece of threaded stock. eliminate the ability for the two bolts to seperate.
more vibration, but more secure than stock
good for racing and not as brutal as solid metal