On 8/15/2010 10:52 PM, drdlhammond wrote: > How can I/we tell if the rubber motor mounts are bad??? Good question. I guess one answer would be "if you can't get the proper torque without metal-to-metal contact..."
If you use the proper hardware, you should be able to go to 60-80 inch lbs and still have roughly 1/8" clearance between the front of the ear of engine casing and the front washer as well as between the surface of the engine mount and the rear of the case ear. At the risk of asking a stupid question, are you sure you have the right mounts? The O-200 style cases will not accept the conical mounts and there were C90-14F and a few C85-14F engines that require the same mounts as the O-200. If the exhaust touches the cowl, correct that before you spend a lot of money on other issues. Mags, spark plugs, and valve train issues can cause vibration by making the engine run "rough", e.g. produce less power from one or more cylinders. -- John Cooper Skyport East www.skyportservices.net
