[Farmall] F-20 runs

[Karl Olmstead]

For the most part, I agree, but it wasn't running well enough to pull 
anything heavier than its own shadow the other day.  Along with blowing out 
the carbon, I need to check valve clearances, although I expect to find no 
problems there, since the engine has plenty of compression.

It has that big, T-20 type manifold with the hot/cold valve, and the valve 
is not in good shape.  I'm hopin' that it isn't stuck in the 'hot' position, 
which does no good when running on gasoline.  But you're right.  Once I get 
it running well enough to pull the drag, I'll work it hard.

The T-20 has been running great, so I put its carb on the F-20 over the 
weekend.  But I'm still working on the oil filter mount.  The original is 
pretty well shot; too many years of being overtightened have distorted the 
pot metal bracket quite badly.  I pulled one off one of my parts T-20, but 
it also has some problems.  One more to go, off other parts T-20, but it has 
a control rod running through it that I haven't been able to get off so far. 
Maybe tonight.

If anything, the situation on F-20 oil filter mounts is even worse than it 
is on F-12s.  Repeated overtightening severely distorts the mount, causing 
more leaks.  And so far, every mount I've removed has the bottom third of 
the mounting flange broken off.  I'm going to have to do some creative work 
with PC-7 epoxy and my mill to make a new gasket groove which is square and 
concentric with cannister mounting bolt.

I'll get there, but I figure the oil leak needs to get fixed before I run 
the engine much more.  The short run last week made a real mess, as well as 
wasting some good motor oil.

-Karl

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>
>>************
>>First of all, a ton of rust and carbon came blowing out of the stack and 
>>raining down on me; more than I've ever seen before.  The good news was 
>>that it hadn't had time to get hot.  I hate those showers of hot 
>>cinders!**************
>
> Karl,
> Not being able to hear or see what is happening there with that F-20, I'd 
> say the above paragraph describes most of the problem. I'm thinking this 
> ol girl needs to run for about an hour or so. It needs to get good and 
> hot, and work all that crud out of the cylinders, around the valve seats, 
> and rings and so forth. Putting it under a good load after it's warmed up 
> for 15 minutes will help that process. Maybe pull  about 5k of dead weight 
> down to the pavement and back.  That should get it up to a good working 
> temperature, and burn out all them boogers.
>
> bobcurrie