Scion FR-S PDF Manuals online Download Links at Scion Manuals Scion FR-S Toyota 86 / Scion FR-S / Subaru BRZ with 2.0 L 4U-GSE / FA20 boxer engine 2013: Download Link. Regarding on your car’s particular situation,you can also consult a experienced Scion mechanic online with ASE Certified Technician scion tc engine | eBay Find great deals on eBay for scion tc engine. Shop with confidence. Skip to main content. eBay Logo: Related: 2005 scion tc engine 2azfe engine 2006 scion tc engine scion tc engine 2.4 2014 scion tc engine engine 2007 scion tc base 2 2007 scion tc engine engine 2006 scion tc base 2. Include description. Categories. All. eBay Motors Flat engine - Wikipedia A flat engine is an internal combustion engine with horizontally-opposed cylinders. Typically, the layout has cylinders arranged in two banks on either side of a single crankshaft and is otherwise known as the boxer, or horizontally-opposed engine. The concept was patented in 1896 by engineer Karl Benz, who called it the "contra engine." Flat-four engine - Wikipedia The design is rarely seen with shared crank throws (See Coventry Climax FWMW for such a non-boxer flat engine), so "flat-four" and "boxer-four" are usually used synonymously. The configuration results in inherently good balance of the reciprocating parts, a low centre of gravity, and a very short engine length.