Lotus / Corvette

[Larsson]

Hej!
Läste en artikel i Automobil från November 1989, denna handlade om Corvette ZR-1.
Enligt artikeln så var Lotus med och utvecklade en aluminium V8:a till denna bil. En
V8:a på 5,7lit och 4-ventilerssystem och vad jag kan utläsa så fick man ut 380hk ur
denna motor. Någon som vet mer om denna motor och om Lotus själva använde denna
i någon bil?
Med vänlig hälsning Fredrik

[Stefan_A]

Användes i modifierat skick i Elise GT1 om jag inte fått det helt om bakfoten.

[Nillet]

Wiki är ens bästa vän...

http://en.wikipedia.org/wiki/Lotus_Esprit
V8:an var i Esprit var på 3,5 liter vilket troligen inte har något med Corvettens 5,7-liters motor att göra.

http://en.wikipedia.org/wiki/Chevrolet_Corvette_(C4)

During 1986, General Motors acquired Group Lotus, the UK based engineering consulting and performance car manufacturing firm. The Corvette division approached Lotus with the idea of developing the world's fastest production car, to be based on the C4 generation Corvette. With input from GM, Lotus designed a new engine to fit in place of the L98 V8[citation needed] that was powering the standard C4. The result was what GM dubbed the LT5, an aluminum-block V-8 with the same bore centers as the L98, but with four overhead camshafts, 32 valves. Lotus also designed a unique air management system for the engine to provide a wider power band by shutting off 8 of the 16 intake runners and fuel injectors when the engine was at part-throttle, while still giving the ZR-1 375 hp (280 kW) when at wide open throttle. In addition to the engine, Lotus helped GM design the ZR-1's (which in prototype version was called "King of the Hill"[4]) upgraded braking and steering systems[citation needed], and helped them pick the settings for the standard "FX3" adjustable active ride control that Chevrolet was fitting to the car[citation needed], helping to ensure that the vehicle was more than just a modern-day muscle car with a big engine and no real capability on the track.

http://en.wikipedia.org/wiki/Chevrolet_ ... engine#L98

Years: 1985–1992
The new 1985 L98 350" added tuned-port fuel injection "TPI", which was standard on all 1985–1991 Corvettes. It was rated at 230 bhp for 1985–1986, 240 bhp for 1987-1989 (245 bhp with 3.07:1 rear axle ratio (1988-1989 only)), and 245 bhp in 1990-1991 (250 bhp with 3.07:1 rear axle). Aluminum cylinder heads (Corvette only) were released part way through the 1986 model run, modified for 1987 with D-ports, and continued through the end of L98 Corvette production in 1991 (still used on ZZx 350 crate engines).[7] The L98 V8 was optional on Jan. '87–'92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more and a change to hydraulic roller camshaft. Compression was up again in 1990 to 9.5:1 Camaro/Firebird and 10:1 Corvettes, but rated output stayed the same

[Nillet]

Användes i modifierat skick i Elise GT1 om jag inte fått det helt om bakfoten.

3,5 liters motor enligt http://www.lotusespritgt1.co.uk/mhracing.html

[Nillet]

Lotus Engineering utvecklar massor med grejer åt andra bilföretag, en hel del får vi säkert inte veta.
Exempel:
Opel:s Ecotech motor utvecklades av Lotus.
Infinity Emerg-E var på lotus-fabriken när jag var där i somras.

[Stefan_A]

Användes i modifierat skick i Elise GT1 om jag inte fått det helt om bakfoten.

3,5 liters motor enligt http://www.lotusespritgt1.co.uk/mhracing.html

Ja och nej... http://en.wikipedia.org/wiki/Lotus_Elise_GT1

[Nillet]

Användes i modifierat skick i Elise GT1 om jag inte fått det helt om bakfoten.

3,5 liters motor enligt http://www.lotusespritgt1.co.uk/mhracing.html

Ja och nej... http://en.wikipedia.org/wiki/Lotus_Elise_GT1

Ja, jag var så insnöad på Esprit så att hjärnan inte kopllade över till Elise som du skrev om.

[Larsson]

Frågade Mike Kimberly om det någonsin fanns några planer på att använda denna motor i en Lotus och fick följande svar:

"No. Too bulky and different characteristics"