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GTZ quad cam c'était avangardiste comme moteur. J'aurais aimer voir quelqu'un les pousser un peu plus.

https://en.wikipedia.org/wiki/Quad_4_engine

Dans le temps c'était normal de voir sa chez les Japonais mais les américains avait pas encore fait beaucoup de moteur DOHC



The engine family known as the Quad 4s was debuted to the public in the spring of 1987. The Quad 4 is a 2,260.5 cc (2.3 L; 137.9 cu in) DOHC inline four-cylinder produced by General Motors' Oldsmobile division. The Quad 4 name is derived from the engine's four-valve, four-cylinder layout. The engine was a modern design for its time, using a cast-iron block and an aluminum head. Even though belts were more popular for this purpose on OHC engines at the time, chains were used to time the camshafts to the crankshaft. The water pump is also driven by the timing chain. The Quad 4 was the first wholly domestic regular production DOHC four-cylinder engine designed and built by GM; the only prior DOHC four-cylinder engine offered by GM was the Cosworth Vega, which featured a DOHC head designed by Cosworth in England.

First released to the public as a regular production option for the 1988 Oldsmobile Cutlass Calais and Pontiac Grand Am, the engine's availability expanded to Buick in late 1988 and Chevrolet in 1990, after which it became a mainstay in GM's lineup until its cancellation after the 2002 model year.

Simultaneous to the engine's release in 1988, Oldsmobile attempted to further the Quad 4 name through highly publicized events featuring such cars as the Oldsmobile Aerotech. Another such event was the 1988 Indianapolis 500, when Oldsmobile was chosen to pace the race with a convertible version of their Cutlass Supreme, and a pre-production turbocharged Quad 4 was the engine of choice for their pace car. Although it was publicized in 1988 that the Quad 4 was forthcoming in a 180 bhp (134 kW) "HO", as well as a 250 bhp (186 kW) turbocharged version (the same engine that was in the pace car that year), GM never released the turbocharged version as a publicly available option. Although the engine in Oldsmobile Aerotech was a purpose-built, turbocharged example; it was solely meant to showcase the capability of the engine's design.

After the first few years of rave reviews of the Quad 4, the automotive press began to criticize it for its noise, vibration, and harshness (NVH). At the time, the Quad 4 was generally compared to turbocharged four cylinders, V6s, and occasionally V8s. The first changes of the Quad 4 to address its NVH were two rounds of exhaust port size reductions, followed by the addition of balance shafts in 1995. Further changes were made for the 1996 model year when the engine's bore and stroke were changed, and the engine was subsequently redubbed "Twin Cam".

In addition to the 2,260.5 cc (2.3 L; 137.9 cu in) DOHC versions, there was also both a short-lived SOHC variant, the "Quad OHC", available from 1992 to 1994, and the 2,392.3 cc (2.4 L; 146.0 cu in) Twin Cam from 1996 to 2002. The Twin Cam was replaced by the Ecotec for the 2003 model year.

All engines in the Quad 4 family were produced at the Lansing Engine Plant (plant five) in Delta Township near Lansing, Michigan. The Twin Cam was the last engine that was engineered and produced solely by Oldsmobile; the Aurora V8 and Intrigue V6 shared architecture with the Cadillac Northstar.

In recent years, the design has gained a minor following in hot rodding circles as a period style engine because it looks similar to a 1930s Offenhauser DOHC design (once you remove the ribbed aluminum cover, exposing the tall "cam towers" and the deep valley between them holding the spark plugs).[1][2]

T’es le master du copy paste


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un grand prix sa prenait le 3.8 SC , ca cetait de la machine. Ou un bon vieux bonneville, un vrai salon roulant.
Je m'ennui du mien...! Avec des headers et une poulie sur la balayeuse plus petite je faisais du 13.2 13.4
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Envoyé de mon SM-A530W en utilisant Tapatalk
 
Il y a eu des versions Z26 aussi à la fin, me souviens plus avec quel moteur.
C'était encore le vénérable 3,1...

Personne pourra nier que c'était pas des bons beaters, j'ai eu un acheiva 94, un regal coupe 89 et un century 2000 pis ça prenait l'abus comme une pornstar prends l'anal.

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Pas mal sur qu'on aurait pu trouver un modèle pas mal plus pertinent, nostalgique et performant que ces vidanges là... :D
 
Dans mon jeune temps j'ai eu un Grand Am manuelle 1989 avec: 1989–1991: 2.3 L LG0 Quad 4 HO MPFI I4 engine: 180 hp (130 kW), 160 lb⋅ft (220 N⋅m) of torque,
ça marchait pas pire se p'tit char.

Il était identique a celui la:


 
I am happy to see these threads pop up, thanks Danny!
It sure beats another what to buy thread or where to buy thread.
After all this is a car forum and I expect posts about cars and their uniqueness and spotting in the wild.

Keep them coming Danny!
 
I am happy to see these threads pop up, thanks Danny!
It sure beats another what to buy thread or where to buy thread.
After all this is a car forum and I expect posts about cars and their uniqueness and spotting in the wild.

Keep them coming Danny!

Off topic is pretty off topic, there are some nice threads in the member’s cars section.


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J’ai eu un grandprix 1989, 2.8l pendant 4 ans 2000-2004. Mon premier char. 500$. Je l’ai roule de 200k km a 300k km. Il a fini a la scrap mais le moteur et transmision roulait impeccable. C’est le body qui etait fini vers la fin. Best 500$ ever. J’ai meme eu une amende sur decarie a 175 km/h durant un topspeed run haha good old days
 
Le V6 3.8 de cette époque était le summum selon moi. Il avait un beau son, c'était tuff et assez performant. Mon père a eu un SC dans un Bonneville SSEI, ça marchait parreil lol...

Le Quad j'ai jamais trop trippé mais c'était quand même un bon moteur. Beaucoup de mauvaise chose se sont dite sur ces moteurs mais il y avait pire ailleur!

Les Pontiac 6000 était tuff pas possible, beaucoup de Taxi avait ça.
 
un grand prix sa prenait le 3.8 SC , ca cetait de la machine. Ou un bon vieux bonneville, un vrai salon roulant.

Mon père avait un bonneville SSEI justement avec le 3.8L supercharge, c’était malade dans le temps lol
 
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