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Farmall H Kero Pistons and Sleeves

R

RyanKve

Member
Hello everyone, me again with the frozen H.

I was just wondering, if I were to need to put new pistons and sleeves in this H motor, would I have to get special pistons and sleeves if I wanted to keep using it on kerosene? I heard that the kerosene is a lower compression and steiner tractor says gas engines with C-152
 
Dont take this the wrong way, but why would you want to run it on kerosene? Its more expensive, dilutes the oil, and only runs correctly when the engine is at full working temperature, which is hard to keep one hot enough without working it hard.

I guess if you want a perfectly restored tractor to show people how they could be run on kero, then good on ya, but its quite a bit of work to start them up and shut down properly and keep the oil changed out.
 
I think finding the correct flat top pistons would be hard. For the Farmalls A and B where the pistons are different for kerosene finding the correct ones is impossible, all the one I have seen are for the higher compression ratios.
 
It's kind of pointless to hang onto the
kero burning capabilities. Like previously
mentioned, it would really only be good for
demonstration purposes, and keeping the
originality of a kero burner.

That said, you can put in whatever pistons
you want, as long as you bolt on the right
head to go along with them. Might be a good
time to convert to gas. And put in the gas
burning pistons, along with putting on a
gas burning head. Note - (you have to use
the right pistons with corresponding head).
 
Farmall went heavy on gas earlier and I believe that if Deere had made a gas version from 39-46 they would have sold more tractors as the buyers wanted a gas burning tractor and not a kerosine tractor. Had a 41 H Farmall, and a 38 A, 46 B, 49 B 50 AR & 51 A John deere. That 46 B if would have been gas would have about equaled the 41 H Farmal and not the B,BN, A Farmall so I think Deere lost sales because of that. I think most Deeres have been converted to gas.
 
Yes, but I have no idea where you'd even find such a thing. Maybe someone has an NOS set in their parts stash, but that's a needle in a haystack situation.

Everyone wants the overbore stepped head pistons Tim the Toolman Taylor MORE POWER ARR-ARR-ARR overhaul on these tractors. That's what the market demands so that's what the suppliers supply. Nobody wants to go back stock, and even fewer want to go back with alternative fuel.
 
Should the farmall H kero have pistons like tthe ones that are currently in there? Or are the gas pistons?
 
Flat tops are easy enough to find, if thats what you
want to do... except you have a nice set of pistons
right now. If you want to lower the compression, just
find someone with a lathe and face off some of the
dome. The more important part of the equation is
do you still have all of your all-fuel attachments for
the engine. I think you should keep your engine set
up that way. Then you can burn that E-50 stuff,
which is considerably cheaper than gasoline, or
kerosene if you want to. Just because someone
says they dont do that anymore is no reason for
you not to build the tractor you want. Everyone
applauds at a pink or purple Farmall, but they have
a collective fit when it comes to low compression. A
model T Ford is only 4:1, and they run just fine.
 
If it still has the kero head on it, I'm
GUESSING it must still have the kero
pistons in it.

Been a long time since I have had my kero
engine apart. I do not have the numbers
fresh in my head, nor the literature to
look at, to find the number.

Should be a 4 digit number casted into the
head (top side under the valve cover, I
THINK), that indicates what head it is.

Flat top pistons, and domed pistons, I
think is the difference on the pistons.
Pretty simple to figure out which pistons
go to which head, visually.

Maybe someone else can fix you up with the
actual numbers. Or you can research it out
further yourself. A Case/IH dealer should
be able to line you out on the numbers,
even if they can't help you out on
supplying parts. Go there, and inquire
about info, if you need to.
 
why do u want to use kerosene is my question. have you done your home work on kerosene? the only reason back then was because it was cheap.
its not cheap now. and it wont burn unless the engine is hot. unburnt fuel dilutes the oil. makes for more engine wear. any of them kerosene
burners are worn right out. you have to start them on gas. if it stalls on kerosene then what? you need to drain the carb and get the gas
back in it. buy a farmall M or wd6 if u want to burn fuel oil . way better engine. but using gas nothing wrong with that.
 
Doubtful but if you still have cast iron flat top pistons they were used for all three fuels starting out. Latest ones IH sold for a standard altitude kerosene engine was sleeve and piston set 366897R91. That was a 3-7/16 bore set of aluminum flat tops. They quit selling the cast iron ones way back. Search that number or 53666DB for older ones.
 
(quoted from post at 09:25:38 05/04/22) Latest ones IH sold for a standard altitude kerosene engine was sleeve and piston set 366897R91. That was a 3-7/16 bore set of aluminum flat tops. They quit selling the cast iron ones way back.

366897R91 comes up with some piston, sleeve, and ring set from spare.AVSParts.com. Called Avspare. Is this the sleeve and piston set you are talking about?
Click to expand...
 
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