In this video, we’ll be talking about GM’s workhorse four cylinder engine: The Quad 4. This engine gradually worked its way into b3coming the base engine in a large portion of GM’s passenger car lineup throughout the late 1980s and 1990s.
GM's Forgotten Engines : The Oldsmobile Quad 4
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engines, Forgotten, GM's, Oldsmobile, Quad
- Categories: Oldsmobile
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I worked on a ton of these. Still have the cam gears alignment tool.
I had one in a 97 Grand Am. It was very complex to change the water pump due to it being run off the timing chain. You had to support the engine because the engine mount on the passenger side was in the way. Also the aluminum heads & cast iron block had issues with differences in material. They were know for head gasket issues. Thee 2.4 Ecotec is not a good engine. Oil consumption issues, blown real main seals. There was even a recall on the 2010 -12 engines for the oil consumption issues. The Quad 4 was a way better design then the 2.4 IMO. I believe the newer 2.4 Ecotec was made from 2010-17
I remember the launch of that engine, it was talked about in all the car mags etc. Can't speak to the early ones but I know they get a lot of bashing about noise and roughness.
I bought a brand new 2001 Cavalier Z24 5 speed which I still own. The LD9 Twin Cam has been a fantastic engine. 220K on it now and I have never did a thing to the motor -Nothing. It fires up and idles perfectly. I guess the 65 oil changes were the secret. Not my daily driver anymore of course but I am hanging on to it for sentimental reasons.
In 2020 I found (and bought) the exact same car with only 40K but automatic. A beautiful, garage kept version. It's funny but I enjoy driving my 5-speed version better even though it is old and tired. The automatic seems to have that GM 4 cylinder drone to it
190hp in 1990 ish was insane.
thank heaver they forgot about them,,,
it's a shame they didn't have better integration with the tech with rest of the gm subsidiaries. opel had generally decent 4 cyls. and they should've stuck the opel 4 cyls in the fiero. and done a model with the turbo 4 cyl.
and with the 4wd system. mini reversed calibra.
As a Chevy enthusiast and a Beretta owner, I remembered the 90 – 93 GTZ.
They were advertised with the Quad 4 engine rated at 190 hp in 90 and later at 180 hp in 93. Detuned due to engine reliability issues.
The Beretta Z26 that came in 94, 95 and 96, came with the 3.1 V6 engines, not the quad 4.
I do remember Oldsmobile Calais international and 442 editions.
Another classic case of General Motors rushing something into production, without enough refinement.
But we were getting our asses kick by the imports 4 cylinders.