That's not a piston.

This is a piston.

and that's from a?

Diesel locomotive?

Cut a hole in the top it could almost be a Halloween costume ...

These are from Locomotives.

The black one on the left is from an EMD 567 Supercharged V-12, it's 8-1/2" in diameter. The big guy on the right is out of a Baldwin 608 Supercharged 8-Cylinder and its 12-3/4" in diameter.

The EMD produces about 1200 hp and the Baldwin produces 1500hp.

This was on the blog from the Illinois Railway Museum that I frequent.

Gearheadotaku wrote: and that's from a?

Looks like a Volvo 2.3l.

I did a service call at a marine engine repair place by the Miami airport. They had a piston from a ship engine on the floor. 24" dia at least.

There's a house near work that has a mailbox whose stand is made out of an EMD 645 piston and conrod assembly. The locos the 645 was used in produced anywhere from 1000hp-3600hp, depending on application. Good luck trying to knock that one over, vandals.

I wonder if Bully Dog makes a tuner for those?

I've got one like the smaller one in my shop. It's out of an EMD 16 cyl tugboat engine. I've got a valve out of a monster engine too. The stem on the valve it probably a foot long.

After college a friend of mine was working for Stewart and Stevenson. I went to visit him at the facility he worked at and he asked me if I wanted to see the engine he was working on. So we walked through the building and he opened an odd oval door in a wall. Sort of like a ship's door. When we were inside he explained that we were INSIDE the cylinder and standing up underneath the piston that was about 12 feet across.

I've seen rims with less dish than that piston

curtis73 wrote: I wonder if Bully Dog makes a tuner for those?

No, it's impossible to improve on a factory tune

Odd thought: 12.75" piston with a 15.5" stroke = 1979 cubic inches or 32.4 Litres or displacement

12.75" piston with a 3.0" stroke = 383 cubic inches.

Single cylinder 383....Yeah, odd thought.

modernbeat wrote: After college a friend of mine was working for Stewart and Stevenson. I went to visit him at the facility he worked at and he asked me if I wanted to see the engine he was working on. So we walked through the building and he opened an odd oval door in a wall. Sort of like a ship's door. When we were inside he explained that we were INSIDE the cylinder and standing up underneath the piston that was about 12 feet across.

That's awesome. Please tell me you had a camera....

I once knew a guy that built a two story house inside a an old air craft carrier cylinder and lived in it..................eeeerrr that's not true. I got nothing else.

Pretty cool stuff here. Wonder what's the biggest piston ever made? I googled it but really didn't come up with anything conclusive.

Hey, I have the exhaust valve from a diesel train here on my desk at work. It's about 16" long and the valve head diameter is about 3.5-4". I had it polished up years ago so it looks chrome. Needs to get pix for ya...

Geez how many rings does that thing need.

I'm trying to imagine the sound a two-stroke, single cylinder 383 would make!

I doubt it would be a pretty sound

Subliminal Pepsi canoe.

mmm.. pepsi....

mguar wrote: In reply to SyntheticBlinkerFluid: There is a working steam engine with a 36 inch piston and 5 feet of stroke.. Max RPM? 105

And more torque than god.