The Wayback Machine - https://web.archive.org/web/20110222090951/http://www.race-cars.com:80/utility/coswrthr.htm
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| Type | Year | Size | Output | Description |
|---|
| Mk I | 1959 | 997cc | -- | Experimental, unsold, tried out Duckworth's radical cam design ideas |
| Mk II | 1960 | 997cc | 75 Bhp. | First Cosworth production engine, Formula Junior, A2 cam, initiated Lotus connection |
| Mk III | 1960 | 997cc | 85-90 Bhp. | Formula Junior engine, A3 cam, stronger bottom end, optional dry sump |
| Mk IV | 1961 | 1098cc | 90-95 Bhp. | Formula Junior, bored out Mk III |
| Mk V | 1962 | 1340cc | 80 Bhp. | First road car engine, lightly modified 109E for Lotus Seven |
| Mk VI | 1962 | 1340cc | 105 Bhp. | Mk V racing version, very few made as displacement not suitable for any racing formula |
| Mk VII | 1962 | 1475cc | 120 Bhp. | Bored out Mk VI to get closer to 1.5 Litre class limit, still 3 main |
| Mk VIII | 1963 | 1498cc | 90 Bhp. | Similar to Mk V but bassed on 5 main 116E, many sold, used in Lotus Seven |
| Mk IX | 1963 | 1498cc | 120-125 Bhp. | Racing version of Mk VIII |
| Mk X | 1963 | 1498cc | -- | One-off experimental version of Lotus twincam |
| Mk XI | 1963 | 1098cc | 100-110 Bhp. | Updated Formula Junior engine, made magic 100 bhp/litre, big seller, 109E block |
| Mk XII | 1963 | 1594cc | 140 Bhp. | Racing version of Lotus twincam, dry sump, stock rods and crank |
| Mk XIII | 1963 | 1594cc | 140 Bhp. | Formula B racing twincam, upgraded Mk XII with steel rods and crank |
| Mk XIV | 1963 | 1498cc | 100 Bhp. | Developed Mk VIII for Lotus Seven |
| Mk XV | 1963 | 1594cc | 140 Bhp. | Racing twincam, wet sumped for Cortina, close to XIII |
| Mk XVI | 1963 | 1498cc | 140 Bhp. | Racing twincam, spec of Mk XIII for 1.5 litre limit |
| Mk XVII | 1964 | 1098cc | 120 Bhp. | Modified Junior engine with downdraft inlets brazed onto cast iron head, few made |
| MAE | 1965 | 997cc | 100 Bhp. | Formula 3 engine, single downdraft, many sold as kits |
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| Type | Year | Size | Output | Description |
|---|
| DFV | 1967 | 2993cc | 405Bhp. | The most successful GP engine of all time, 155 victories 1967-83, the first engine completely designed by Cosworth |
| DFW | 1968 | 2491cc | 358 Bhp. | Short stroke DFV for Lotus in the Tasman, engines converted back to DFVs |
| DFX | 1975 | 2645cc | 840 Bhp. | Short stroke Indy turbo engine, boost limited to 80 in. |
| " | 1986 | " | 700 Bhp. | Rules reduced boost to 48 in., the most successful Indy engine of the 80s |
| DFL | 1981 | 3955cc | 540Bhp. | Group C endurance version, larger bore and stroke |
| " | 1981 | 3298cc | 490 Bhp. | short stroke DFL for C2 cars |
| DFV | 1982 | 2993cc | 500 Bhp. | Short Stroke DFV, DFL bore, better power for F1 |
| DFY | 1982 | 2993cc | 500-520 Bhp. | Further development of short stroke DFV with narrower valve angle heads, F1 only |
| DFV (F3000) | 1986 | 2993cc | 420 Bhp. | Special for Formula 3000, rev limited to 9000 |
| DFZ | 1987 | 3495cc | 560 Bhp. | Post turbo-era F1 3.5 aspro |
| DFR | 1988 | 3495cc | 595+ Bhp. | Fully updated F1 DFZ, new heads, Benneton for '88, widely used '89 |
| DFS | 1988-89 | 2645cc | no spec | Modernized DFX for CART/Indy using DFR experience |
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| Type | Year | Size | Output | Description |
|---|
| BDA | 1969 | 1601cc | 120 Bhp. | Belt Drive layout similar to FVA on taller Kent block |
| BDB | 1970 | 1700cc | 200 Bhp. | Escort RS1600 rally engine, sold as kits |
| BDC | 1970 | 1700cc | 230 Bhp. | Injected BDB for Group 2 Escort RS1600, also kits |
| BDD | 1971 | 1600cc | 200 Bhp. | Definitive Formula Atlantic Motor, also kits |
| BDE | 1972 | 1790cc | 245 Bhp. | Formula 2 first stretch to 2 litre rules, bigger bore, injection |
| BDF | 1972 | 1927cc | 270 Bhp. | Formula 2 next stretch, liners brazed in to cast iron block, very successful |
| BDG | 1973 | 1975cc | 275 Bhp. | Formula 2 and rally, development of BDF, later with aluminum block |
| BDH | 1973 | 1300cc | 190 Bhp. | Group 2 Sports cars, shorter stroke on shorter block |
| BDJ | 1974 | 1098cc | 150 Bhp. | Formula C, short stroke version for SCCA |
| BDK | none | -- | -- | reseved for forgotten project |
| BDL | ? | ? | ? | experimental turbo |
| BDM | 1975 | 1599cc | 225 Bhp. | Formula Atlantic, big valve, injected BDD |
| BDN | 1977 | 1600cc | 210 Bhp. | Formula Atlantic, Canadian Atlantic sealed motors this year only, sold as kits |
| BDO | none | -- | -- | not allocated |
| BDP | 1984 | 1975cc | 245 Bhp. | Sprint car, aluminum block, BDG bore/stroke, injected, methanol |
| BDQ | none | -- | -- | not allocated |
| BDR | 1983 | 1601cc | 120 Bhp. | BDA kits for Caterham Super Sevens, also 1.7 litre and 150, 170 Bhp. |
| BDT | 1981 | 1778cc | 200 Bhp. | RS1700T turbo, aluminum block, kits for JQF |
| " | 1981 | 1803cc | 250 Bhp. | RS200 BDT units redesigned, rebuilt, and enlarged |
| BDT-E | 1986 | 2137cc | 500 Bhp. | Evolution BDT by Brian Hart, Ltd. |
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| Type | Year | Size | Output | Description |
|---|
| YAA | 1984 | 1993cc | ? | In-house project, 16 vaslve, twin cam belt drive on Pinto block for small manufacturers, 3 built |
| YBA | 1984 | 1993cc | 200 Bhp. | Prototype YBB, 10 built |
| YBB | 1985 | 1993cc | 204 Bhp. | Turbo YAA commissioned by Ford for Sierra RS Cosworth, 5000 built for homologation |
| YBC | 1986 | 1993cc | 280-300Bhp. | Group A rally engine |
| YBD | 1987 | 1993cc | 225 Bhp. | Evolution YBB used in Sierra RS500, more turbo, 8 injectors, 500 Bhp in race tune |
| YBE | 1987 | 1993cc | -- | Ford Undustrial Customer Engine, non-Cosworth covers, used in Panther Solo |
| YBF | 1987 | 1993cc | 400+ Bhp. | Race version of YBD |
| YBG | 1989 | 1993cc | 207 Bhp. | U.S. emmissions capable model |
| YBH | 1989 | -- | -- | not yet disclosed |
| YBJ | 1989 | 1993cc | 207 Bhp. | Similar to YBG, emmissions engine |
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| Type | Year | Size | Output | Description |
|---|
| EAA | 1972 | 1995cc | 275 Bhp. | Chevolet Vega, Formula 2 and Sports Cars, only successful in latter, used Vega alloy block, head similar to BD series, belt drive, productionized and built by Chevy in 122 BHP for for Cosworth Vega of the 70s |
| GAA | 1973 | 3412cc | 440 Bhp. | Ford "Essex" V6 Race Engine, Capri/Granada block, 4 valve twincam belt drive heads, Group 2 touring and Formula 5000, 100 kits sold by Ford Motorsports |
| JAA | 1974 | 750cc | 65 Bhp. | Norton-Villiers parallel twin Motorcycle Engine, DFV-like head layout, patron hit trouble and only 30 built |
| JBB | 1975 | 750cc | 95-110 Bhp. | Racing Version of JAA, later injected |
| KAA | 1978 | 2410cc | 240-275 Bhp. | Opel Ascona 400/Manta 400, used Opel Diesel block, 16 valve twincam for Group 4, injected for road at 140 Bhp, Webers for competition |
| OAA | 1979 | 1600cc | 170 Bhp. | Formula SuperVee engine, based on single overhead cam Golf |
| WAA | 1984 | 2297cc | 187 Bhp. | Mercedes-Benz, twincam conversion on M102 4 cylinder, originally for competition, then for road use in 190E 2.3-16 |
| WAB | 1988 | 2498cc | 195 Bhp. | Mercedes, increased displacement for '89 model year |
| WAC | 1989 | 2490cc | 330 Bhp. | Mercedes, Group A short stroke '89 touring car racing |
| GBA | 1986-87 | 1497cc | 750-1000 Bhp. | Formula 1, Turbo V6 Ford, Benetton get 1000 Bhp with fuel in '87 |
| DBA | 1987 | 3000cc | 370 Bhp. | GM-Pontiac, Cosworth 4 valve twincam head on production block, chain drive cams, kits |
| KBA | 1987 | 1998cc | 156 Bhp. | Vauxhall-Opel, 16 valve twincam conversion of midrange engine, fitted to many models |
| HB | 1989 | 3500cc | 600+ Bhp. | Formula 1, 75 degree V8 for Benetton '89 and customers |
This index has been put together from a variety of sources to whom we are grateful.
