# Ecomotors - Opposed Piston Opposed Cylinder engine **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [May 20, 2011, 7:55am UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608 "2011-05-20T07:55:36Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![juicedz4](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/juicedz4/32/5051_2.png) [@juicedz4](https://forums.speedlife.net/u/juicedz4)\ **Post date:** [May 20, 2011, 7:55am UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/1 "2011-05-20T07:55:36Z")
This looks pretty interesting with dual pistons and no valve train. ![http://www.ecomotors.com/sites/default/files/u1/Tech_page_header.jpg](http://www.ecomotors.com/sites/default/files/u1/Tech_page_header.jpg) [http://www.ecomotors.com/](http://www.ecomotors.com/) Dan ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [May 20, 2011, 8:09am UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/2 "2011-05-20T08:09:36Z")
It looks really interesting…but it looks as though it could only work in a FWD or AWD car with a really long engine bay and the trans hung off to the side to power the front wheels, PTO to the rear for AWD… ---
**Author:** ![somedude](https://avatars.discourse-cdn.com/v4/letter/s/ecd19e/32.png) [@somedude](https://forums.speedlife.net/u/somedude)\ **Post date:** [May 20, 2011, 8:14am UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/3 "2011-05-20T08:14:16Z")
it is a interesting way to over complicate a 2 stroke engine. I still think a 2 stroke direct injection would see success in a racing application. ---
**Author:** ![Freek](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/freek/32/7357_2.png) [@Freek](https://forums.speedlife.net/u/Freek)\ **Post date:** [May 20, 2011, 8:21am UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/4 "2011-05-20T08:21:04Z")
Yes, it’s a lot of fuss over a two stroke. I platform that already promises amazing fuel economy. There are a lot more moving parts with this design and therefor with Murphy Law in place much more shit to go wrong. ---
**Author:** ![Muckman](https://avatars.discourse-cdn.com/v4/letter/m/7ab992/32.png) [@Muckman](https://forums.speedlife.net/u/Muckman)\ **Post date:** [May 20, 2011, 10:23am UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/5 "2011-05-20T10:23:29Z")
Another engine design I found while researching the OPOC engine. 12 tiny cylinders turning a sine wave “crankshaft” ![http://www.theautochannel.com/news/2007/09/05/060995.1-lg.jpg](http://www.theautochannel.com/news/2007/09/05/060995.1-lg.jpg) [http://www.engineeringtv.com/video/AVEC-Axial-Vector-Engine](http://www.engineeringtv.com/video/AVEC-Axial-Vector-Engine) ---
**Author:** ![quadturbo](https://avatars.discourse-cdn.com/v4/letter/q/7bcc69/32.png) [@quadturbo](https://forums.speedlife.net/u/quadturbo)\ **Post date:** [May 20, 2011, 12:25pm UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/6 "2011-05-20T12:25:25Z")
> [@focusinprogress](#): > > It looks really interesting…but it looks as though it could only work in a FWD or AWD car with a really long engine bay and the trans hung off to the side to power the front wheels, PTO to the rear for AWD… How do you figure this? Have you seen a Subaru engine? ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [May 20, 2011, 4:23pm UTC](https://forums.speedlife.net/t/ecomotors-opposed-piston-opposed-cylinder-engine/212608/7 "2011-05-20T16:23:13Z")
because they have drawn the housing into the design, and if you compare the size of the area a bellhousing would bolt up, the “width” of this motor is FAR too wide to fit the longway side-to-side in an engine bay unless the distance between the framerails was like 5’ +