Sable V6-183 3.0L DOHC VIN S MFI (1997)
Intake Manifold: Description and Operation
The intake manifolds consist of:
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upper intake manifold.
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lower intake manifold.
The intake manifold runner lengths are tuned to optimize engine torque and power output.
Upper
The upper intake manifold is a one-piece aluminum casting used in conjunction with a lower intake manifold.
Lower
The lower intake manifold is located between the upper intake manifold and the cylinder heads and consists of:
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an integral Intake Manifold Runner Control (IMRC).
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mounting flanges for the fuel injection supply manifold.
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pockets in which the bottom-feed fuel injectors are mounted. These are placed to direct the fuel injector spray immediately in front of each
engine intake valve.