Ford 1.0 piston.
next 1 is compared to a Gen II viper piston.
Ford 1.0 piston.
next 1 is compared to a Gen II viper piston.
I love the complexity of new piston designs. There's a lot of engineering going on in the combustion chamber these days. What's the compression ratio of that 1.0?
DI pistons are certainly looking more and more like diesel pistons with the combustion chamber in the middle, etc.
Was expecting RC car content.
And here I was expecting a small piston?
Edit: dang-it! GameboyRMH sniped me!
I'm a little surprised that that Yamaha piston can get away with having raised letters inside the combustion chamber. I would think that would create swirl or a hotspot or something. (Can you tell I'm not an engineer?) Or maybe at 12,000 rpm there isn't time....
It's funny that engine technology scales up and down so well. These pistons are a meter wide at the ROD.
I like the coffee can size ones from a John Deere two cylinder.
You can see the block down below.
MrChaos wrote: Ford 1.0 piston.
Is this the Atkinson cycle engine in the C Max?
Our old Ingersol-Rand recip air compressors had 31" low side pistons, piston rings was like a hula-hoop.
The piston on the right looks small. That's a Chevy 454 piston. On the left is the piston out of Sonny Leonard's 1005ci Chevy big block
I like Sonnys' engines. They are awesome, in the sense that they inspire awe.
Regarding motorcycle engines, I recall that a ZX10's engine has a normal bore for a 2 liter engine (about 86mm) but half the stroke. So it has the same valve area/shrouding as an average 2 liter car engine but it has half the displacement to feed. So it makes about the same POWER as an average 2 liter car engine, just RPM-shifted for the reduced torque of a small engine.
FWIW, the Ford 1.0L has about 1mm larger bore than my Mini.
In reply to Keith Tanner:
I believe it is 11/1 maybe 10.
I like the piston from a Honda 50. The bore is 39mm.
Is the square a QR code?
Brian wrote: Is the square a QR code?
Yup. Fun fact: Denso created the QR code to track car parts.
Keith Tanner wrote: I love the complexity of new piston designs. There's a lot of engineering going on in the combustion chamber these days. What's the compression ratio of that 1.0?
how true..... you'd be surprised... (maybe not), how many people don't think of the piston as part of the combustion chamber.... 
Took this pic yesterday just for this thread:
That's a mighty big piston. But not big enough for this valve! (took this pic myself...while not holding the phone steady enough)
Behold!
the 61.2mm Piston for an Abarth 750cc motor.
The engines at work run these bad boys. About 15 Liters per cylinder.
In reply to shadetree30:
No one answered but I'm assuming it's the 1.0 ecoboost.
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