""VIBRATION""

[Ron]

I recently purchased a 1982 '30. It has the 5411 diesel. In neutral it vibrates when throttled up.When motoring I have alot of vibration at almost all RPM's. Some better some worse. I know about the flange clearance from the shaft. Has anyone installed softer motor mounts or a dampining device on the shaft? The cutlass bearing is within tolerance. The motor mounts are rusty and need to be replaced. Also the shaft to flange is rusted tight, so I can't check the clearance without replacement. Any ideas????

 

[LaDonna Bubak - Planet Catalina]

Flex Coupling

PYI sells this & basically it fits between the shaft flange & transmission flange to absorb vibration. Of course you'll install this when you replace your rusted flange. Sounds like you know what's going on with everything but just remember that a single cylinder diesel will always be a little, oh shall we say, rough.LaDonna

 

[James]

5411 thoughts

The Universal 5411 should operate almost vibration free. The motor is a 2 cylinder diesel, and so is well balanced. The federal coupling on the drive shaft is notorious for rusting. It is probably galled to the shaft, too.I had this motor in my '82. It should be vibration free in neutral. Only fuel mixture or a broken or out of balance flywheel could be external suspects. What does your exhaust look like under load?