daisyman

Member
A friend of mine is going to go and look at an 801 diesel. I'm not familiar with that engine, other than what is shown on Tractordata. I know its a 172 cu in, any thing problematic on those? I assume they're not a Perkins yet in that model, right?
Any help would be appreciated.
Irv
 

It's a Ford engine. Really it's just a 172 gasoline engine modified enough to make it a diesel The early ones (I'm not sure when they changed) had no balancers on their crankshafts. These resulted in many broken crankshafts.
 
(quoted from post at 16:41:33 09/18/18)
It's a Ford engine. Really it's just a 172 gasoline engine modified enough to make it a diesel The early ones (I'm not sure when they changed) had no balancers on their crankshafts. These resulted in many broken crankshafts.
If it made it till now, would you still be wary of one? I don't know the history on it. He's looking at it as we speak.

Irv
 
My ignorance is showing here, but how and where did they put the balancers on those engines? What did that do for the diesel part? I would have thought that a 16 to 1 compression ratio would have been pretty hard a gasser crank anyway? Did they go to a heavier one?

Irv
 
I did a search here in the YT archives and found the answer to the balancer question. Quite the solution! It uses the same technology as the old Kohler K series cast iron engines with the geared spinning counterweights. I had never heard of that arrangement on a Ford till now.

Irv
 
I did a search here in the YT archives and found the answer to the balancer question. Quite the solution! It uses the same technology as the old Kohler K series cast iron engines with the geared spinning counterweights. I had never heard of that arrangement on a Ford till now.

Irv
 

The balancer is sometimes called a Lanchester balancer after the name of the guy that came up with it in 1911. It consists of two counter balance shafts driven at twice crankshaft speed. It is used on inline four cylinder engines to balance the secondary forces.

Primary unbalance forces result from the direction change of each piston at TDC and BDC. Secondary unbalance forces result since the piston acceleration off TDC is greater than the acceleration off of BDC. It is these secondary forces that the balancer operates on.

I am not sure why it was only used on the diesel engine and not the gas engine as well. Diesel pistons are typically much heavier which would result in greater unbalance forces over the gas engine. Perhaps this was the reason....but I do not know.
 
Wow, quite the system. I appreciate the explanation of those. Again, I've always been a gearhead, but that's a new one on me!

:? Irv
 
Wow, quite the system. I appreciate the explanation of those. Again, I've always been a gearhead, but that's a new one on me!

:? Irv
 

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