please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed . december 2009 learn how and when to remove this template message cosworth type private company industry automotive automobile racing motorsport founded london 1958 founder mike costin and keith duckworth headquarters northampton england area served worldwide key people hal reisiger ceo 1 products engines electronic data acquisition and control systems services high performance engineering precision manufacturing owner gerald forsythe kevin kalkhoven website cosworth.com a ford cosworth dfv on a ligier js11 cosworth is a high performance engineering company founded in london in 1958 specialising in engines and electronics for automobile racing motorsport and mainstream automotive industries . cosworth is based in northampton england with north american facilities in indianapolis and mooresville north carolina . cosworth has collected 176 wins in formula one as engine supplier ranking second with most wins behind ferrari . 2 contents 1 corporate history 2 engines 2.1 early types 2.2 the sca series 2.3 the fva series 2.4 the dfv double four valve 2.4.1 dfv variants 2.5 the bda series 2.6 the ga v6 2.7 the fba and fbc v6 2.8 the yb series 2.9 the gba v6 2.10 the hb v8 2.11 the ec eca ed edm and ed 2 4 v8 2.12 the jd vj and vjm v10 2.13 other formula one engines 2.14 other indycar and champ car engines 2.15 other formula atlantic engines 2.16 other road engines 3 cosworth f1 car 4 formula one world championship results 5 summary of f1 engine use 6 see also 7 references 8 further reading 9 external links corporate history edit the company was founded as a british racing internal combustion engine maker in 1958 by mike costin and keith duckworth costin and duckworth . both of the co founders being former employees of lotus engineering ltd. cosworth initially maintained a strong relationship with colin chapman and the initial revenues of the company came almost exclusively from lotus . when the company was founded in 1958 duckworth left lotus leaving costin who had signed a term employment contract with chapman at the company . until 1962 costin worked on cosworth projects in his private time while being active as a key lotus engineer on the development of lotus 15 through 26 elan as well as leading the team lotus contingent at foreign races as evidenced by the 1962 le mans lotus scandal . cosworth mk.iv on 1962 lotus 20 cosworth mk.xiii on lotus 59 initial series production engines mk.ii mk.v mk.viii and mk.xiv were sold to lotus exclusively and many of the other racing engines up to mk.xii were delivered to team lotus . the success of formula junior engines mk.iii iv xi and xvii started bringing in non lotus revenues and the establishment of formula b by scca in america allowed the financial foundation of cosworth to be secured by the increased sales of mk.xiii a pure racing engine based on lotus twincam through its domination of the class . this newly found security enabled the company to distance itself from the lotus mk.vii and elan optional road engine assembly business and allowed its resources to be concentrated on racing engine development . the first cosworth designed cylinder head was for sca series with a sohc reverse flow configuration similar to the coventry climax fwe engine . a real success was achieved with the next gear driven dohc four valve fva in 1966 when cosworth with a help from chapman convinced ford to purchase the rights to the design and sign a development contract including an eight cylinder version . this resulted in the dfv which dominated formula one for many years . from this time on cosworth was supported by ford for many years and many of the cosworth designs were owned by ford and named as ford engines under similar contracts . another success by the bd series in the 1970s put cosworth on a growing track . the company went through a number of ownership changes . after duckworth decided he didn t want to be involved with the day to day business of running a growing company he sold out the ownership to united engineering industries uei in 1980 retaining his life presidency and day to day technical involvement with cosworth and becoming a uei board director ; uei was a group of small to medium sized technology companies which was taken over by carlton communications in 1988 carlton was primarily interested in some of the audio visual companies in the uei portfolio and cosworth was a poor fit with these ; a new buyer for the company in the engineering automotive sector was sought and the traditional engineering company vickers plc bought cosworth in 1990 . 3 in 1998 vickers sold cosworth and pi research to ford . 2 in september 2004 ford announced that it was selling cosworth and pi research along with cosworth racing ltd and its jaguar formula one team . on 15 november 2004 the sale of cosworth was completed to champ car world series owners gerald forsythe and kevin kalkhoven the current cosworth group . 2 the road car engine aspect of the business was split from the racing division following the sale of the engineering division of cosworth to vw audi in september 1998 and renamed cosworth technology before being acquired by mahle gmbh in 2005 . cosworth technology was then renamed as mahle powertrain on 1 july 2005 . 4 since 2006 cosworth has diversified to provide engineering consultancy high performance electronics and component manufacture services outside of its classic motorsport customer base . current publicised projects range from an 80 cc 4.9 cu in diesel engine for unmanned aerial vehicles through to an engineering partnership on one of the world s most powerful normally aspirated road car engines . cosworth supplied engines to one f1 team in 2013 the marussia f1 team . 5 engines edit early types edit the following is the list of initial products with cylinder heads modified but not originally designed by cosworth on ford kent blocks . the exceptions were mk.xvii and mae which had intake port sleeves for downdraft carburetors brazed into the stock cast iron head in place of the normal side draft ports thus could be considered cosworth designs . type year block displacement claimed description mainly for mk.i 1959 105 107 e 997 cc experimental one off to test cam designs development of a2 and a3 camshaft mk.ii 1960 105 107 e 997cc 75 bhp first series production engine a2 cam lotus mk.vii mk.iii 1960 105 107 e 997cc 85 90 bhp a3 cam optional dry sump formula junior mk.iv 1961 105 107 e 1098 cc 90 95 bhp mk.iii with larger bore . formula junior mk.v 1962 109e 1340 cc 80 bhp series production road engine lotus mk.vii mk.vi 1962 109e 1340 cc 105 bhp racing version of mk.v lotus mk.vii mk.vii 1962 109e 1475 cc 120 bhp mk.vi with larger bore . 1.5 litre class mk.viii 1963 116e 1498 cc 90 bhp improved mk.v on 5 main bearing block lotus mk.vii mk.ix 1963 116e 1498 cc 120 125 bhp racing version of mk.viii 1.5 litre class mk.x 1963 116e 1498 cc experimental one off lotus twincam development of mk.xii and xiii mk.xi 1963 109e 1098 cc 100 110 bhp improved mk.iv dry sump formula junior mk.xii 1963 116e 1594 cc 140 bhp racing lotus twincam stock crank and rods dry sump lotus 20b 22 23 mk.xiii 1963 116e 1594 cc 140 150 bhp improved mk.xii with steel crank and rods dry sump formula b lotus 22 23b 23c mk.xiv 1963 116e 1498 cc 100 bhp improved mk.viii lotus mk.vii mk.xv 1963 116e 1594 cc 135 145 bhp racing lotus twincam steel crank and rods wet sump lotus 26r lotus cortina mk.xvi 1963 116e 1498 cc 140 150 bhp mk.xiii for 1.5 l class note 6 mk.xvii 1964 109e 1098 cc 120 bhp improved mk.xi downdraft intake ports dry sump formula junior mae 1965 109e 997 cc 100 110 bhp improved mk.iii downdraft intake ports dry sump formula 3 in addition to the above cosworth designed and provided the assembly work for lotus elan special equipment optional road engines with special camshafts and high compression pistons . the final model of the above initial series was the mae in 1965 when new rules were introduced in formula 3 allowing up to 1 000 cubic centimetres 61.0 cu in engines with 36mm intake restrictor plate . mae used one barrel of a two barrel weber ida downdraft carburetor with the other barrel blanked off . the domination of this engine was absolute as long as these regulations lasted until 1968 . as cosworth had a serious difficulty meeting the demand the mae was mainly sold as a kit . this experience led to the later fva dfv contract to be drawn where the responsibility of development rested with cosworth and the manufacturing right and responsibility rested with ford . there also were some specially cast iron heads with similar dimensions to these brazed heads with titanium alloy valve spring retainers called the screamer head for mae in later years . the sca series edit a year before the introduction of the mae the single overhead cam two valve sca was introduced . it was a 997 cc engine based on ford cortina 116e block that was designed for formula 2 and featured the first totally cosworth designed head laystall forged crankshaft steel main bearing caps and pistons with only one compression ring and one oil scraper ring each . cylinder head to block sealing was by a head gasket incorporating cooper rings . the basic configuration was quite similar to coventry climax fwe on lotus elite including its sohc reverse flow design except for a series of 7 spur gears 1 on crank 2 intermediary gears on 2 fixed shafts mounted on the front cover back plate 1 on the 116e camshaft used as a jackshaft 2 on a common fixed shaft in the head 1 on the camshaft driving a 5 bearing camshaft and the ford 5 main bearing iron block . the intake ports and the oil scavenge pickup for dry sump lubrication were canted 25 degrees so they faced straight up and down respectively when the engine is mounted 25 degrees from vertical to the right for a lower center of gravity . the sca initially had two 40dcm2 weber twin choke downdraft sand cast carburetors mounted on top to produce 115 hp which was replaced by lucas fuel injection in 1966 eventually reaching 140 hp . longer stroke scb was built to compare against 1498 cc mk.xvi and upon proving its superior power against the mundy designed 2 valve crossflow dohc head it acted as the benchmark for the development of fva to measure the benefits and shortcomings of a four valve crossflow dohc design . it was the results of this four valve development work that formed the basis for many of the cosworth engines that followed . a larger 85 mm bore scc with the same short stroke 5 bearing crankshaft as the sca was built and sold for scca 1.1 litre sports car class . type year block displacement claimed description mainly for sca 1964 116e 997 cc 115 140 bhp gear driven sohc reverse flow formula two scb 1964 116e 1498cc 175 bhp experimental development of fva scc 1965 116e 1098cc 135 bhp sca with larger bore north american sports car racing the fva series edit the cortina crossflow block was also the basis for the fva an f2 engine introduced in 1966 and developed under the same contract as the dfv for the new 1.6 litre engine rules . this engine featured 16 valves operated by twin overhead camshafts driven by a train of 9 gears . the metering unit for the lucas mechanical fuel injection was rotated by a toothed belt from the gear