Engine making a lower end rattling noise.

[Retired Wrencher 6,626]

I just got this 1057 back up and running this spring went through it front to back.. I noticed a few weeks ago. It’s starting to make this lower end rattling noise. I was told could be the balance gears in the engine, but this one has no gears in it so I’m gonna give you a couple videos to listen to again, excuse my video taking skills. Any thoughts are welcome.

[squonk 46,353]

I have a K321 with the gears removed that was professionally rebuilt. Has about 30 hours on it and has the same noise. I'm not worried about it.

Edited 8 hours ago by squonk

[lynnmor 8,788]

Might be piston slap, are you using the same oil as before?  Any chance that gasoline got into the oil?  Does it change as the temperature changes or the engine warms?

[rick 292]

Are the engine mounting bolts still tight?  

I fixed a similar noise by tightening said bolts on my 314-8.

[Lagersolut 798]

3 hours ago, squonk said:

I have a K321 with the gears removed that was professionally rebuilt. Has about 30 hours on it and has the same noise. I'm not worried about it.

 

Same with the C 101 in my profile picture 

[Retired Wrencher 6,626]

4 hours ago, squonk said:

I have a K321 with the gears removed that was professionally rebuilt. Has about 30 hours on it and has the same noise. I'm not worried about it.

Thanks Mike.I have never heard this before. And  I have had a few of these engines. How many do you have on this engine? Do you use the engine a Lot or not much?

 

[Retired Wrencher 6,626]

1 hour ago, Lagersolut said:

 

Same with the C 101 in my profile picture 

Thanks for the reply.

[squonk 46,353]

Just now, Retired Wrencher said:

Thanks Mike.I have never heard this before. And  I have had a few of these engines. How many do you have on this engine? Do you use the engine a Lot or not much?

 

I plow snow with it. It's on my 953

[Retired Wrencher 6,626]

1 hour ago, rick said:

Are the engine mounting bolts still tight?  

I fixed a similar noise by tightening said bolts on my 314-8.

I had this engine off the tractor for at least to years sitting on a a rolling cart.

[Retired Wrencher 6,626]

1 minute ago, squonk said:

I plow snow with it. It's on my 953

OK MIKE I feel better knowing that you think it is ok to use. I know a lot but ,not a master of engines.

[Retired Wrencher 6,626]

4 hours ago, lynnmor said:

Might be piston slap, are you using the same oil as before?  Any chance that gasoline got into the oil?  Does it change as the temperature changes or the engine warms?

I think Mike answered this question.

[squonk 46,353]

The noise is very similar to piston slap or wrist pin. Back in the day when I was in the auto shop we had tons of GM and Chrysler 4 bangers that would rattle under a light load like de-acceleration. They pretty much ran forever. The few I had apart had loose wrist pins.

 

Now My C-160 had this noise for years. One spring it got noticeably louder. So I swapped it out with another engine. I found a balance gear needle in the pan and this broken piston.

 

 

It's a simple job to remove the head or pan and take a look inside if you're not sure.