Cat Ten Piston Replacement

Hi Cysco,
am sure the Vert. pony engines are half of the 10, 15, & 20 engines---depending on bore size for the various Diesel Engine configurations needing more powerful stater engines.

Scanned are the specs for both the Horiz. and the Vert. pony pistons that are available still from non Cat sources.
The pistons now only come semi-finished so you can machine them to suit your needs.
Hope someone else chimes in with supplier details or they may be in the Parts Sticky.
Cheers,
Eddie B.

I don't have much to add other than the "10" used the same 3-3/8" bore pistons that were used on the Diesel 45 & 40 starting engines.

I have fitted pistons in engines that had a higher compression height by facing the top of the piston to match the block height.
If you do the math maybe let them out some to increase the compression ratio.

Thanks for the responses guys..............Lots of good info.

Edb..the chart shows exactly the size of the piston in the block now. The cylinder walls are in pretty good shape so maybe hitting them with a glaze buster...............

Sideseat..........I like the way you are thinking.....a little more compression.....lighter piston will equal less rotating mass = more HP

This reminds me of the "good ole days" .....how much HP do ya want....😊

Now how do I slip the cost by the ever watchful eyes of the better half... *L*

OM.....you are right there also!

Thanks again guys.......Bill

Bill,

I'm not inclined to agree with "more HP is better" in this case.

Keep in mind that you have to hand crank this engine. Higher compression will not be your friend! Then I wonder too about changing the dynamics here with increased HP in a 80 year old engine. When you start increasing cylinder pressures, you add more stress to the head and rods and crankshaft...etc...and for what gain? When I rebuilt mine I went for things to increase longevity...not reduce.

If you are going to go with the Farmall H pistons...then I would go with Steve's recommendation about machining the piston height down.

Is there a reason you are not using the original pistons? Do you need original pistons?

Just my opinion...

Pat