What pump is this?

Just picked up a new to me homemade log splitter. Anybody know what this hydraulic pump would be off of? TRW is stamped on it, can't make out the other numbers without taking the pump off. Did some searching about it and could only find that it's possibly off an old IH backhoe? I'm hoping to find some specific information on it though
 

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IF it works I would not worry about it till it didnt.' When it goes it will probably need a pump and then you can buy what you like for it. Bigger and more pressure is always better for that job.
 
Pump works, leaks at seal alittle but that's minor, I'm more trying to just figure out what gpm it would be because the little 5.5hp honda shuts off when valve is fully open trying to split a chunk of poplar wood. I'm thinking 5.5 is too small. Might get a 11hp honda. Thoughts?
 
Thoughts??
I would be looking for a riding lawn tractor engine from the junk yard for small amount of $. Maybe 17 or more HP. Your mounting would require some fabrication I suspect. Some folk discard really good stuff that requires little work to make it useful.
 
The gear section looks to be fairly narrow so it’s probably a smaller 4-10 gpm pump, however those pump are rated at 1800 rpm, running it with a small engine at 3600 rpm increases its flow dramatically, it may not be double but it’s up there
General rule of thumb is 2 engine hp per gallon of pump capacity so you’ll need a fair size engine to get max use of that pump

It looks very similar to the Cessna pumps used on older Case industrial equipment but most of those were wider gear sections making 12/25 gpm
 
I would be looking for a riding lawn tractor engine from the junk yard for small amount of $. Maybe 17 or more HP. Your mounting would require some fabrication I suspect. Some folk discard really good stuff that requires little work to make it useful.
I've been playing around with the idea of using an old 18 horse twin cylinder briggs I have, never had it running but might be worth the effort to make it work
 
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