I have a seat of the pants vibration or miss at app 35mph and 3500 rpms. I have tried lowering and raising the engine to no avail. It has a new set of plugs and Ive run two different props it does it worse with the raker. THe engine height has been everywhere between 3 in to 3 3/4 in below the pad. Ihave a 9 in plate and both props have been reworked. Please advise. I also notice a miss ot stutter at a constant 1200 rpms. The engine is on a 354 Ranger. Initally I was told th prop was ventilating and thats why I was doing the above changes, It did not help.


Modified by 354ranger at 9:39 AM 7/10/2005