Originally Posted by Tommyatomic
Well in the case of the Focus ST-R dont forget the weight savings from dropping support for cargo and passengers.
I would assume it also has dropped the fuel tank in favor a fuel cell and surge tank. Also the weight savings from an AC delete, heater core delete, MFT + dash delete, passenger and rear seat delete.
I can only guess that if the engineers behind the ST-R were worth their paycheck the ST-R probably uses an oil cooler combined with a smaller alloy radiator for better cooling while saving weight.
The list of things deleted from a purpose built racecar gets long and frequently purpose built racecars are seamwelded.
Well since the ST-R still weighs approximately 2700 pounds, at first glance it looks like they didn't save a whole lot of weight by dumping all that stuff. Considering that they are starting with an ST that weighs significantly more than a regular Focus (ST curb weight is 3,223 lbs.) it's not bad at all.
2.0L EcoBoost I-4
250 hp est.
250 lb.-ft. of torque est.
Ford Racing custom exhaust
Ford Racing engine calibration
Ford Racing high capacity radiator
Ford Racing clutch
Ford Racing oil to air oil cooler
Remote oil filter
6-speed manual transmission with limited-slip differential
Weight 2700 lbs.
Structural performance: over 20,000 lb.-ft/degree (torsional)
Seam-welded steel unibody with integrated FIA-certified safety
AST performance coilover adjustable dampers
Adjustable camber plates
Ford Racing upgraded sway bar with adjustable end links
AST performance adjustable dampers
Control-blade multilink rear suspension
Ford Racing upgraded swaybar with adjustable end links
Electric steering with unique Ford Racing calibration
Front: 336mm 2-piece rotors with race pads
Rear: 271mm production with race pads
Ford ABS with unique Ford Racing calibration
Wheels & Tires
18-inch BBS CF 1-piece cast alloy wheel (Anthracite)
ATL® 18-gallon fuel cell with custom single-dry-break system
Brake cooling ducts
Ford Racing front/rear tow hooks
Ford Racing lightweight wiring harnesses
RECARO Pro Racer HANS® racing seat
AiM MXL Pista GPS-based data system
Ford Racing short throw shifter
Ford Racing fire suppression system
Ford Racing 6-point safety harness
Ford Racing driver safety nets
Ford Racing steering wheel with quick release
Custom center panel with switches