You guys may have seen this already

KowalskiCamaro · 02-25-2011, 07:37 AM

http://www.engineeringtv.com/video/Opposed-Piston-Opposed-Cylinder

Is this

?

TFord · 02-25-2011, 07:52 AM

Nope. not bs

Stingr69 · 02-25-2011, 09:24 AM

Broadly and generaly - 2 Strokes are more powerfull for a given engine size as compared to a simmilar 4 Stroke engine of the same size and weight but they are not more fuel efficient or as enviromentally friendly as the 4 stroke. That is what killed the 2 Stroke street production vehicles. My brother owned a Yamaha RZ 2-stroke street bike years ago and it had some work done on it. WOW! big power when it was "on the pipe".

These are not considerations for some military applications.

-Mark.

CDBiker220 · 02-25-2011, 10:17 AM

Stingr69 - Your statement may have been correct 20 years ago but 2-strokes have come a long way. A direct injected 2 stroke typically has the same or less emissions then a similiar power 4 stroke, with half the displacement, fewer moving parts, and significantly less weight. And almost always have better fuel economy. This article has some more information about what automotive companies are invested in 2 stroke development. 2 strokes are superior to 4 strokes in almost every imaginable way. Power delievery can be debated though. The only con is the EPA is against them for stigma they have. And most people view them the same way as dirty loud pippy engines.

http://www.snowgoer.com/output.cfm?id=1836523

Dave Coyle · 02-25-2011, 10:25 AM

Very insteresting engine!!! He states that they are a long way from production but if they can make this work, I think you will see this thing go crazy!!!

02-25-2011, 07:37 AM	#1
KowalskiCamaro Drives: 2010 Red Jewel 1SS & 2011 Durango Join Date: Apr 2010 Location: Seneca, SC Posts: 160 View My Garage	You guys may have seen this already http://www.engineeringtv.com/video/Opposed-Piston-Opposed-Cylinder Is this ? __________________

02-25-2011, 10:17 AM	#4
CDBiker220 Drives: 98 camaro z28 Join Date: Oct 2008 Location: pittsburgh, pa Posts: 189	Stingr69 - Your statement may have been correct 20 years ago but 2-strokes have come a long way. A direct injected 2 stroke typically has the same or less emissions then a similiar power 4 stroke, with half the displacement, fewer moving parts, and significantly less weight. And almost always have better fuel economy. This article has some more information about what automotive companies are invested in 2 stroke development. 2 strokes are superior to 4 strokes in almost every imaginable way. Power delievery can be debated though. The only con is the EPA is against them for stigma they have. And most people view them the same way as dirty loud pippy engines. http://www.snowgoer.com/output.cfm?id=1836523 Last edited by CDBiker220; 02-25-2011 at 12:02 PM.

02-25-2011, 10:25 AM	#5
Dave Coyle Drives: 2010 SS , 1970 Z-28, 2002 Avalanche Join Date: Aug 2009 Location: Michigan Posts: 2,524 View My Garage	Very insteresting engine!!! He states that they are a long way from production but if they can make this work, I think you will see this thing go crazy!!! __________________ IF IT'S WORTH HAVING, IT'S WORTH WAITING FOR!!!! (AND IT WAS) 434RWHP/403RWTQ Livernois Motorsports 2C Cam kit Kooks 1 7/8 LT Headers/Hi-Flo Cats/Corsa Exhaust Roto-Fab CAI / Port Intake Precission 2400/2800 Converter/3.73 AAM gears Livernois Motorsports Tune Best time: 11.97 @ 117 MPH

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02-25-2011, 07:52 AM	#2
TFord Camaro Fanatic Drives: 2000 Z28 Join Date: May 2007 Location: Auburn, WA Posts: 1,808 View My Garage	Nope. not bs

02-25-2011, 09:24 AM	#3
Stingr69 '69 Owned Since '79 Drives: '69 Z/28 LeMans Blue w/White Join Date: Oct 2008 Location: LR AR Posts: 1,848 View My Garage	Broadly and generaly - 2 Strokes are more powerfull for a given engine size as compared to a simmilar 4 Stroke engine of the same size and weight but they are not more fuel efficient or as enviromentally friendly as the 4 stroke. That is what killed the 2 Stroke street production vehicles. My brother owned a Yamaha RZ 2-stroke street bike years ago and it had some work done on it. WOW! big power when it was "on the pipe". These are not considerations for some military applications. -Mark.