MrChaos
MrChaos HalfDork
2/2/16 12:55 p.m.

Ford 1.0 piston.

next 1 is compared to a Gen II viper piston.

Keith Tanner
Keith Tanner MegaDork
2/2/16 1:17 p.m.

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?

rslifkin
rslifkin Reader
2/2/16 1:18 p.m.

DI pistons are certainly looking more and more like diesel pistons with the combustion chamber in the middle, etc.

GameboyRMH
GameboyRMH MegaDork
2/2/16 1:23 p.m.

Was expecting RC car content.

HappyAndy
HappyAndy UberDork
2/2/16 1:34 p.m.

And here I was expecting a small piston?

Edit: dang-it! GameboyRMH sniped me!

foxtrapper
foxtrapper UltimaDork
2/2/16 1:59 p.m.

Stealthtercel
Stealthtercel Dork
2/2/16 3:02 p.m.

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....

pinchvalve
pinchvalve MegaDork
2/2/16 3:17 p.m.

It's funny that engine technology scales up and down so well. These pistons are a meter wide at the ROD.

Karacticus
Karacticus HalfDork
2/2/16 3:21 p.m.

I like the coffee can size ones from a John Deere two cylinder.

You can see the block down below.

shadetree30
shadetree30 HalfDork
2/2/16 3:58 p.m.
MrChaos wrote: Ford 1.0 piston. next 1 is compared to a Gen II viper piston.

Is this the Atkinson cycle engine in the C Max?

fasted58
fasted58 UltimaDork
2/2/16 4:12 p.m.

Our old Ingersol-Rand recip air compressors had 31" low side pistons, piston rings was like a hula-hoop.

NickD
NickD HalfDork
2/2/16 4:17 p.m.

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

Knurled
Knurled MegaDork
2/2/16 4:27 p.m.

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.

T.J.
T.J. UltimaDork
2/2/16 5:20 p.m.

FWIW, the Ford 1.0L has about 1mm larger bore than my Mini.

iceracer
iceracer PowerDork
2/2/16 5:21 p.m.

In reply to Keith Tanner:

I believe it is 11/1 maybe 10.

EvanR
EvanR Dork
2/2/16 7:06 p.m.

I like the piston from a Honda 50. The bore is 39mm.

Brian
Brian MegaDork
2/3/16 8:05 a.m.

Is the square a QR code?

RexSeven
RexSeven UberDork
2/3/16 8:25 a.m.
Brian wrote: Is the square a QR code?

Yup. Fun fact: Denso created the QR code to track car parts.

oldeskewltoy
oldeskewltoy UltraDork
2/3/16 11:09 a.m.
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....

GameboyRMH
GameboyRMH MegaDork
2/3/16 12:36 p.m.

Took this pic yesterday just for this thread:

ncjay
ncjay Dork
2/3/16 12:56 p.m.

GameboyRMH
GameboyRMH MegaDork
2/3/16 1:16 p.m.

That's a mighty big piston. But not big enough for this valve! (took this pic myself...while not holding the phone steady enough)

Jumper K. Balls
Jumper K. Balls UberDork
2/3/16 1:38 p.m.

Behold!

 photo 20160203_113511_zps8rcssoiu.jpg

the 61.2mm Piston for an Abarth 750cc motor.

Nitroracer
Nitroracer UltraDork
2/3/16 10:04 p.m.

The engines at work run these bad boys. About 15 Liters per cylinder.

chiodos
chiodos HalfDork
2/3/16 10:27 p.m.

In reply to shadetree30:

No one answered but I'm assuming it's the 1.0 ecoboost.

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