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Draft:Tera V12

From Wikipedia, the free encyclopedia

tera V12
Overview
ManufacturerBuilding The Legend Limited
Also calledtera (stylised)
Production2019–present
Layout
Configuration60° V12
Displacement
  • 5.0 L (305 cu in)
  • 6.1 L (372 cu in)
  • 6.8 L (415 cu in)
  • 7.3 L (446 cu in)
Cylinder bore
  • 90 mm (3.5 in) (5.0 L)
  • 96 mm (3.8 in) (6.1–7.3 L)
Piston stroke
  • 65.5 mm (2.6 in) (5.0 L)
  • 70 mm (2.8 in) (6.1 L)
  • 78.5 mm (3.1 in) (6.8 L)
  • 84 mm (3.3 in) (7.3 L)
Cylinder block materialDie-cast open-deck aluminium
ValvetrainQuad-cam, 2 valves per cylinder
Compression ratio11.7:1
RPM range
Max. engine speed8,000–8,500 rpm
Combustion
Fuel systemLucas mechanical or electronic fuel injection
Fuel typePetrol, incl. renewable fuels
Oil systemWet sump or dry sump
Output
Power output350–670 hp (261–500 kW) (per manufacturer)
Torque output300–650 lb⋅ft (407–881 N⋅m) (per manufacturer)

The tera V12 (styled tera) is a quad-cam V12 hand-built by the British engineering company Building The Legend Limited. Based on the prototype engine developed by Jaguar for its unbuilt Jaguar XJ13 racing car, it is named tera as this is a mathematical term meaning "to the power of 12" — as in terabyte. The word tera itself comes from the Greek teras meaning "monster".[1] It was first used in the Ecurie Ecosse LM69 in 2019[2][3] and launched as a standalone engine at the Race Retro show on 21 February 2020.[4][5]

Background

[edit]

In the mid-1960s Jaguar developed the XJ13, a mid-engined racing prototype intended to return the company to winning ways at Le Mans. Its engine was a 5.0-litre, 60-degree V12 with double overhead camshafts, developed by Jaguar engineer Claude Baily under engineering director William Heynes. The car never raced, and only one XJ13 was built; Jaguar's production V12 engine, introduced in 1971, used a simpler single-overhead-cam design, so the quad-cam racing engine was never used in a production car.[4][6] The sole XJ13 prototype crashed during testing in 1971 and was later restored.[6]

Neville Swales, who later founded Building The Legend, acquired the only surviving complete XJ13 prototype engine — the unit Jaguar had sent to Germany for promotional purposes — after finding it advertised on eBay, and had its provenance confirmed by Peter Wilson, an engineer who had worked on the original project.[7] Building The Legend used the engine in the first of its XJ13 re-creations, completed in 2016 with the guidance of surviving members of the original XJ13 team.[5][8] The car was a finalist for the 2016 International Historic Motoring Awards.[9]

Development and launch

[edit]

Building The Legend re-made the quad-cam V12 as a standalone engine, which the company describes as the "what might have been" of Jaguar's V12 programme.[5] The engine, named tera, was first used in the Ecurie Ecosse LM69 — a joint venture between Building The Legend, Ecurie Ecosse and Design Q, revealed on 23 July 2019 as an evolution of the XJ13 concept to comply with 1969 Le Mans regulations.[3][10][11] The LM69 carries a mid-mounted tera in 6.1-litre or stroked 6.8-litre form, visible beneath a transparent deck lid.[2][12]

The engine was launched in its own right at the Race Retro show in the United Kingdom on 21 February 2020, in 6.1-litre and 6.8-litre versions with outputs of up to 650 horsepower (485 kW) and 600 pound-feet (813 N⋅m) and a safe rev limit between 8,000 and 8,500 rpm.[5][4] The engine is hand-built to order in limited numbers, in configurations from street to full race, with period Lucas mechanical fuel injection as standard and electronic fuel injection optional.[4][5]

Design

[edit]

The tera is a 60-degree V12 with four camshafts and two valves per cylinder, an over-square architecture with duplex-chain-driven cams and vernier adjustment.[1] The engine uses a die-cast open-deck aluminium block, and its weight is stated to be similar to that of Jaguar's classic cast-iron-block six-cylinder engine.[1] Ignition is distributor-less, and the engine can be specified with wet sump or dry sump lubrication.[1][13] According to Building The Legend, the engine also runs on renewable fuels as well as conventional petrol.[7]

At launch the engine was offered in 6.1-litre (96 × 70 mm) and 6.8-litre (96 × 78.5 mm) capacities with a compression ratio of 11.7:1.[4] The range has since been extended to include a 5.0-litre racing version (90 × 65.5 mm) and a 7.3-litre version (96 × 84 mm), with manufacturer-stated outputs of 350–670 horsepower (261–500 kW) and 300–650 pound-feet (407–881 N⋅m).[13]

tera V12 versions
VersionBore × strokeCapacityNotes
5.0 L90 × 65.5 mm305 cu inRace specification: 550 hp at 9,000 rpm[13]
6.1 L96 × 70 mm372 cu inLaunch version, 2020[4]
6.8 L96 × 78.5 mm415 cu inStroked launch version, 2020[4]
7.3 L96 × 84 mm446 cu inLargest current version[13]

Applications

[edit]

The engine is used by Building The Legend in its own vehicles and is sold for installation in classic Jaguars as well as other marques and custom projects.[1][7]

The Building The Legend tera V12
ApplicationYearsNotes
Ecurie Ecosse LM692019–presentMid-mounted; 6.1 or 6.8 litres[2][12]
Building The Legend XJ13 re-creation2016–present"1966 Le Mans Prototype"; early cars used surviving original Jaguar prototype engines[7][4]
Building The Legend E-Type Re-Imagined2023–present24 cars planned, each built to customer specification[7]
Aftermarket installations2020–presentCrate engine for the Series 3 E-Type, XJ12, XJ-S, other classic Jaguars, other marques and custom projects[1]

References

[edit]
  1. 1 2 3 4 5 6 "Introducing tera — Our Own Quad-Cam V12 Engine". Building The Legend. Retrieved 12 September 2026.
  2. 1 2 3 Katsianis, Jordan (22 July 2019). "Ecurie Ecosse LM69 revealed in homage to the Jaguar XJ13". Evo. Retrieved 12 September 2026.
  3. 1 2 Padeanu, Adrian (23 July 2019). "Ecurie Ecosse LM69 Is A New Old Supercar Inspired By Jaguar XJ13". Motor1. Retrieved 12 September 2026.
  4. 1 2 3 4 5 6 7 8 Vijayenthiran, Viknesh (4 February 2020). "British firm selling replicas of the Jaguar XJ13's quad-cam V-12". Motor Authority. Retrieved 12 September 2026.
  5. 1 2 3 4 5 Bird, Matt (5 February 2020). "XJ13 V12 reborn as 'tera' crate engine". PistonHeads. Retrieved 12 September 2026.
  6. 1 2 Patrascu, Daniel (3 February 2020). "tera Engine Brings Back the Punch of the Quad-Cam V12 Racing Jaguars". autoevolution. Retrieved 12 September 2026.
  7. 1 2 3 4 5 Berg, Nik (23 January 2023). "The man who brewed up Jaguar's lost V-12". Hagerty Media. Retrieved 12 September 2026.
  8. ↑ "London Classic Car Show stars". The Telegraph. 17 February 2016.
  9. ↑ "The International Historic Motoring Awards". Archived from the original on 16 February 2017. Retrieved 12 September 2026.
  10. ↑ Ramsey, Jonathon (23 July 2019). "Ecurie Ecosse LM69 finishes the Jaguar XJ13's untold story". Autoblog. Retrieved 12 September 2026.
  11. ↑ Price, Gemma Zöe (2 October 2020). "Could the new Ecurie Ecosse LM69 be the best 1960s car ever existed?". The Australian.
  12. 1 2 "LM69 — Ecurie Cars". Ecurie Cars Ltd. Archived from the original on 11 November 2019.
  13. 1 2 3 4 "tera V12". Building The Legend. Retrieved 12 September 2026.

Category:V12 engines Category:Automobile engines Category:Products introduced in 2020

Background

[edit]

In the mid-1960s Jaguar developed the XJ13, a mid-engined racing prototype intended to return the company to winning ways at Le Mans. Its engine was a 5.0-litre, 60-degree V12 with double overhead camshafts, developed by Jaguar engineer Claude Baily under engineering director William Heynes. The car never raced, and only one XJ13 was built; Jaguar's production V12 engine, introduced in 1971, used a simpler single-overhead-cam design, so the quad-cam racing engine was never used in a production car.[1][2] The sole XJ13 prototype crashed during testing in 1971 and was later restored.[2]

Neville Swales, who later founded Building The Legend, acquired the only surviving complete XJ13 prototype engine — the unit Jaguar had sent to Germany for promotional purposes — after finding it advertised on eBay, and had its provenance confirmed by Peter Wilson, an engineer who had worked on the original project.[3] Building The Legend used the engine in the first of its XJ13 re-creations, completed in 2016 with the guidance of surviving members of the original XJ13 team.[4][5] The car was a finalist for the 2016 International Historic Motoring Awards.[6]

Development and launch

[edit]

Building The Legend re-made the quad-cam V12 as a standalone engine, which the company describes as the "what might have been" of Jaguar's V12 programme.[4] The engine, named tera, was first used in the Ecurie Ecosse LM69 — a joint venture between Building The Legend, Ecurie Ecosse and Design Q, revealed on 23 July 2019 as an evolution of the XJ13 concept to comply with 1969 Le Mans regulations.[7][8][9] The LM69 carries a mid-mounted tera in 6.1-litre or stroked 6.8-litre form, visible beneath a transparent deck lid.[10][11]

The engine was launched in its own right at the Race Retro show in the United Kingdom on 21 February 2020, in 6.1-litre and 6.8-litre versions with outputs of up to 650 horsepower (485 kW) and 600 pound-feet (813 N⋅m) and a safe rev limit between 8,000 and 8,500 rpm.[4][1] The engine is hand-built to order in limited numbers, in configurations from street to full race, with period Lucas mechanical fuel injection as standard and electronic fuel injection optional.[1][4]

Design

[edit]

The tera is a 60-degree V12 with four camshafts and two valves per cylinder, an over-square architecture with duplex-chain-driven cams and vernier adjustment.[12] The engine uses a die-cast open-deck aluminium block, and its weight is stated to be similar to that of Jaguar's classic cast-iron-block six-cylinder engine.[12] Ignition is distributor-less, and the engine can be specified with wet sump or dry sump lubrication.[12][13] According to Building The Legend, the engine also runs on renewable fuels as well as conventional petrol.[3]

At launch the engine was offered in 6.1-litre (96 × 70 mm) and 6.8-litre (96 × 78.5 mm) capacities with a compression ratio of 11.7:1.[1] The range has since been extended to include a 5.0-litre racing version (90 × 65.5 mm) and a 7.3-litre version (96 × 84 mm), with manufacturer-stated outputs of 350–670 horsepower (261–500 kW) and 300–650 pound-feet (407–881 N⋅m).[13]

tera V12 versions
VersionBore × strokeCapacityNotes
5.0 L90 × 65.5 mm305 cu inRace specification: 550 hp at 9,000 rpm[13]
6.1 L96 × 70 mm372 cu inLaunch version, 2020[1]
6.8 L96 × 78.5 mm415 cu inStroked launch version, 2020[1]
7.3 L96 × 84 mm446 cu inLargest current version[13]

Applications

[edit]

The engine is used by Building The Legend in its own vehicles and is sold for installation in classic Jaguars as well as other marques and custom projects.[12][3]

The Ecurie Ecosse LM69 is powered by a mid-mounted tera V12
ApplicationYearsNotes
Ecurie Ecosse LM692019–presentMid-mounted; 6.1 or 6.8 litres[10][11]
Building The Legend XJ13 re-creation2016–present"1966 Le Mans Prototype"; early cars used surviving original Jaguar prototype engines[3][1]
Building The Legend E-Type Re-Imagined2023–present24 cars planned, each built to customer specification[3]
Aftermarket installations2020–presentCrate engine for the Series 3 E-Type, XJ12, XJ-S, other classic Jaguars, other marques and custom projects[12]

References

[edit]
  1. 1 2 3 4 5 6 7 Vijayenthiran, Viknesh (4 February 2020). "British firm selling replicas of the Jaguar XJ13's quad-cam V-12". Motor Authority. Retrieved 12 September 2026.
  2. 1 2 Patrascu, Daniel (3 February 2020). "tera Engine Brings Back the Punch of the Quad-Cam V12 Racing Jaguars". autoevolution. Retrieved 12 September 2026.
  3. 1 2 3 4 5 Berg, Nik (23 January 2023). "The man who brewed up Jaguar's lost V-12". Hagerty Media. Retrieved 12 September 2026.
  4. 1 2 3 4 Bird, Matt (5 February 2020). "XJ13 V12 reborn as 'tera' crate engine". PistonHeads. Retrieved 12 September 2026.
  5. ↑ "London Classic Car Show stars". The Telegraph. 17 February 2016.
  6. ↑ "The International Historic Motoring Awards". Archived from the original on 16 February 2017. Retrieved 12 September 2026.
  7. ↑ Padeanu, Adrian (23 July 2019). "Ecurie Ecosse LM69 Is A New Old Supercar Inspired By Jaguar XJ13". Motor1. Retrieved 12 September 2026.
  8. ↑ Ramsey, Jonathon (23 July 2019). "Ecurie Ecosse LM69 finishes the Jaguar XJ13's untold story". Autoblog. Retrieved 12 September 2026.
  9. ↑ Price, Gemma Zöe (2 October 2020). "Could the new Ecurie Ecosse LM69 be the best 1960s car ever existed?". The Australian.
  10. 1 2 Katsianis, Jordan (22 July 2019). "Ecurie Ecosse LM69 revealed in homage to the Jaguar XJ13". Evo. Retrieved 12 September 2026.
  11. 1 2 "LM69 — Ecurie Cars". Ecurie Cars Ltd. Archived from the original on 11 November 2019.
  12. 1 2 3 4 5 "Introducing tera — Our Own Quad-Cam V12 Engine". Building The Legend. Retrieved 12 September 2026.
  13. 1 2 3 4 "tera V12". Building The Legend. Retrieved 12 September 2026.

Category:V12 engines Category:Automobile engines Category:Products introduced in 2020

Background

[edit]

In the mid-1960s Jaguar developed the XJ13, a mid-engined racing prototype intended to return the company to winning ways at Le Mans. Its engine was a 5.0-litre, 60-degree V12 with double overhead camshafts, developed by Jaguar engineer Claude Baily under engineering director William Heynes. The car never raced, and only one XJ13 was built; Jaguar's production V12 engine, introduced in 1971, used a simpler single-overhead-cam design, so the quad-cam racing engine was never used in a production car.[1][2] The sole XJ13 prototype crashed during testing in 1971 and was later restored.[2]

Neville Swales, who later founded Building The Legend, acquired the only surviving complete XJ13 prototype engine — the unit Jaguar had sent to Germany for promotional purposes — after finding it advertised on eBay, and had its provenance confirmed by Peter Wilson, an engineer who had worked on the original project.[3] Building The Legend used the engine in the first of its XJ13 re-creations, completed in 2016 with the guidance of surviving members of the original XJ13 team.[4][5] The car was a finalist for the 2016 International Historic Motoring Awards.[6]

Development and launch

[edit]

Building The Legend re-made the quad-cam V12 as a standalone engine, which the company describes as the "what might have been" of Jaguar's V12 programme.[4] The engine, named tera, was first used in the Ecurie Ecosse LM69 — a joint venture between Building The Legend, Ecurie Ecosse and Design Q, revealed on 23 July 2019 as an evolution of the XJ13 concept to comply with 1969 Le Mans regulations.[7][8][9] The LM69 carries a mid-mounted tera in 6.1-litre or stroked 6.8-litre form, visible beneath a transparent deck lid.[10][11]

The engine was launched in its own right at the Race Retro show in the United Kingdom on 21 February 2020, in 6.1-litre and 6.8-litre versions with outputs of up to 650 horsepower (485 kW) and 600 pound-feet (813 N⋅m) and a safe rev limit between 8,000 and 8,500 rpm.[4][1] The engine is hand-built to order in limited numbers, in configurations from street to full race, with period Lucas mechanical fuel injection as standard and electronic fuel injection optional.[1][4]

Design

[edit]

The tera is a 60-degree V12 with four camshafts and two valves per cylinder, an over-square architecture with duplex-chain-driven cams and vernier adjustment.[12] The engine uses a die-cast open-deck aluminium block, and its weight is stated to be similar to that of Jaguar's classic cast-iron-block six-cylinder engine.[12] Ignition is distributor-less, and the engine can be specified with wet sump or dry sump lubrication.[12][13] According to Building The Legend, the engine also runs on renewable fuels as well as conventional petrol.[3]

At launch the engine was offered in 6.1-litre (96 × 70 mm) and 6.8-litre (96 × 78.5 mm) capacities with a compression ratio of 11.7:1.[1] The range has since been extended to include a 5.0-litre racing version (90 × 65.5 mm) and a 7.3-litre version (96 × 84 mm), with manufacturer-stated outputs of 350–670 horsepower (261–500 kW) and 300–650 pound-feet (407–881 N⋅m).[13]

tera V12 versions
VersionBore × strokeCapacityNotes
5.0 L90 × 65.5 mm305 cu inRace specification: 550 hp at 9,000 rpm[13]
6.1 L96 × 70 mm372 cu inLaunch version, 2020[1]
6.8 L96 × 78.5 mm415 cu inStroked launch version, 2020[1]
7.3 L96 × 84 mm446 cu inLargest current version[13]

Applications

[edit]

The engine is used by Building The Legend in its own vehicles and is sold for installation in classic Jaguars as well as other marques and custom projects.[12][3]

Building The Legend tera V12
ApplicationYearsNotes
Ecurie Ecosse LM692019–presentMid-mounted; 6.1 or 6.8 litres[10][11]
Building The Legend XJ13 re-creation2016–present"1966 Le Mans Prototype"; early cars used surviving original Jaguar prototype engines[3][1]
Building The Legend E-Type Re-Imagined2023–present24 cars planned, each built to customer specification[3]
Aftermarket installations2020–presentCrate engine for the Series 3 E-Type, XJ12, XJ-S, other classic Jaguars, other marques and custom projects[12]

References

[edit]
  1. 1 2 3 4 5 6 7 Vijayenthiran, Viknesh (4 February 2020). "British firm selling replicas of the Jaguar XJ13's quad-cam V-12". Motor Authority. Retrieved 12 September 2026.
  2. 1 2 Patrascu, Daniel (3 February 2020). "tera Engine Brings Back the Punch of the Quad-Cam V12 Racing Jaguars". autoevolution. Retrieved 12 September 2026.
  3. 1 2 3 4 5 Berg, Nik (23 January 2023). "The man who brewed up Jaguar's lost V-12". Hagerty Media. Retrieved 12 September 2026.
  4. 1 2 3 4 Bird, Matt (5 February 2020). "XJ13 V12 reborn as 'tera' crate engine". PistonHeads. Retrieved 12 September 2026.
  5. ↑ "London Classic Car Show stars". The Telegraph. 17 February 2016.
  6. ↑ "The International Historic Motoring Awards". Archived from the original on 16 February 2017. Retrieved 12 September 2026.
  7. ↑ Padeanu, Adrian (23 July 2019). "Ecurie Ecosse LM69 Is A New Old Supercar Inspired By Jaguar XJ13". Motor1. Retrieved 12 September 2026.
  8. ↑ Ramsey, Jonathon (23 July 2019). "Ecurie Ecosse LM69 finishes the Jaguar XJ13's untold story". Autoblog. Retrieved 12 September 2026.
  9. ↑ Price, Gemma Zöe (2 October 2020). "Could the new Ecurie Ecosse LM69 be the best 1960s car ever existed?". The Australian.
  10. 1 2 Katsianis, Jordan (22 July 2019). "Ecurie Ecosse LM69 revealed in homage to the Jaguar XJ13". Evo. Retrieved 12 September 2026.
  11. 1 2 "LM69 — Ecurie Cars". Ecurie Cars Ltd. Archived from the original on 11 November 2019.
  12. 1 2 3 4 5 "Introducing tera — Our Own Quad-Cam V12 Engine". Building The Legend. Retrieved 12 September 2026.
  13. 1 2 3 4 "tera V12". Building The Legend. Retrieved 12 September 2026.

Category:V12 engines Category:Automobile engines Category:Products introduced in 2020

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