New power at Steam Into History

Almost all GP9s are GP10s by now. A GP10 is just a GP9 with 645 power assemblies (cylinders) installed on the original 567 engine block.

These large diesel engines are designed in such a way that individual cylinders bolt up to the engine block. The cylinders are not cast into the block itself like an automobile engine. Each cylinder is called a "Power Assembly."

GP9s were originally built with the EMD 567C engine. The number "567" signified the number of cubic inches per cylinder in the engine. The 16-cylinder 567 engine in the GP9 had a total of 9,072 cubic inches.

When EMD came out with the 645 engine (645 cubic inches per cylinder) they were backwards compatible with the 567C block. The 645 power assemblies would bolt right up to the 567 block. As the older 567 power assemblies wore out, operators typically replaced them with 645 power assemblies, thus changing a GP9 to a GP10.

A 16-cylinder 645 engine has 10,320 cubic inches of displacement. With the additional displacement, horsepower went up slightly, and most GP10s were rated at 1,800 hp.

As a real PRR locomotive, I think this GEEP needs a restoration back to it's original condition.  I base that opinion on the fact that she still sports her high nose.

Man, I bet the Civil War re-enactors who didn't do their homework are going to go nuts showing up there in their wools, and then find a Geep is at the head end!

I'm not certain if this photo helps, but these black objects on the pallet are power assemblies, as Rich explained.

How many locomotives are in the Steamtown backshop in various states of teardown?  Six?  And the two Canadian steamers out of service in the roundhouse?  Seems like they are going for the unofficial records of most locomotives under simultaneous repair at one facility for a museum.  Hopefully, they're taking advantage of this fact during the shop tours to educate the visitors.

What does "Steamtown" have to do with "Steam Into History" other than they are both in Pennsylvania?

Tim O'Malley posted:

I'm not certain if this photo helps, but these black objects on the pallet are power assemblies, as Rich explained.

Well, those "connecting rods" are slightly bigger than the ones in my Chevrolet 350!!! 

The scale or size of train parts, relative to passenger automobile parts, never ceases to amaze me.

2101 & 614 posted:

What does "Steamtown" have to do with "Steam Into History" other than they are both in Pennsylvania?

The above picture of the EMD power assemblies is was taken at Steamtown.

Those "Civil War" coaches with their steel flatcar underframes must look right at home behind a GP10!  I get a real laugh at the big fat knuckle coupler above the "woodburner's" pointy cowcatcher.   As Henry Ford said, "ninety percent of history is bunk!"

Kent Loudon posted:

Those "Civil War" coaches with their steel flatcar underframes must look right at home behind a GP10!  I get a real laugh at the big fat knuckle coupler above the "woodburner's" pointy cowcatcher.   As Henry Ford said, "ninety percent of history is bunk!"

Well, this:

is certainly better than THIS:

Rusty

Tim O'Malley posted:

I'm not certain if this photo helps, but these black objects on the pallet are power assemblies, as Rich explained.

Much like old VW bug engine with it's changeable cylinders!!! Only slightly larger..... 

Berkshire President posted:

Tim O'Malley posted:

I'm not certain if this photo helps, but these black objects on the pallet are power assemblies, as Rich explained.

Well, those "connecting rods" are slightly bigger than the ones in my Chevrolet 350!!! 

The scale or size of train parts, relative to passenger automobile parts, never ceases to amaze me.

Allow me to begin the debate on component sizes  (...thread hijack over: as you were)

The diesel engine design with higher  compression ratios mandates heavier parts being used especially rods and bearings. The EMD power assemblies have always been a big advantage on the EMD engines.  If you read about the guy reproing  Lincoln's funeral train car, you will find a modern steel frame under everything because of safety standards required when hauling people.  Part of today's world. Look at old photos of wooden passenger cars involved in a wreck-kindling wood.

No. 17 looks good from any angle