JoeyV
New member
Quad4 4cyl...y avait pas grand chose de pire que ca côté fiabilité dans les année 90.
Confirmed. Ma Grand Am 94 a sauter avec moin de 100 000km
Quad4 4cyl...y avait pas grand chose de pire que ca côté fiabilité dans les année 90.
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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Je m'ennui du mien...! Avec des headers et une poulie sur la balayeuse plus petite je faisais du 13.2 13.4un grand prix sa prenait le 3.8 SC , ca cetait de la machine. Ou un bon vieux bonneville, un vrai salon roulant.
Un son ''cacane'' assez unique aussi. J'ai toujours trouvé ça distinctif comme son
C'était encore le vénérable 3,1...Il y a eu des versions Z26 aussi à la fin, me souviens plus avec quel moteur.
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!
un grand prix sa prenait le 3.8 SC , ca cetait de la machine. Ou un bon vieux bonneville, un vrai salon roulant.
And for those of us with long memoriesMon père avait un bonneville SSEI justement avec le 3.8L supercharge, c’était malade dans le temps lol