2007 Ecotec 2.4L I4 VVT ( LE5 )

ECOTEC 2.4L VVT I4 (LE5) CAR AND TRUCK ENGINE
2007 Model Year Summary

• Application in 2007 Saturn Sky
• Optimized Piston Skirt
• Vented Starter Solenoid
• Eliminate External Oil Cooler

Full Description of New and Update Features

Application in 2007 Saturn Sky
The Ecotec 2.4L VVT powers the new Sky roadster. This is a longitudinal application, identical to the Ecotec 2.4L in the Pontiac Solstice. It will be available in the Sky with either a Hydra-Matic 5L40 five-speed automatic or Aisin AR5 five-speed manual transmission.

Optimized Piston Skirt
Ecotec 2.4L VVT pistons have been redesigned with a slightly different profile. The piston skirt has been optimized with a slight barrel shape, helping to smooth its glide through the cylinder bore and reduce lateral movement. The new pistons reduce operational noise, particularly during cold starts, and enhance overall smoothness.

Vented Starter Solenoid
A new starter solenoid helps ensure starting performance in extreme cold temperatures. The solenoid case now has a micromesh-covered vent and an O-ring between the case and the starter motor. The mesh protects the solenoid from debris particles but prevents moisture buildup in the case. When the Ecotec 2.4L VVT is warm, any moisture on the solenoid evaporates through the vent. The vented solenoid virtually eliminates the possibility of cold-start problems associated with solenoid icing.

Eliminate External Oil Cooler
The Ecotec 2.4L VVT is no longer fitted with an external oil cooler. Validation tests have demonstrated that, with durability enhancing features such as increased coolant capacity and targeted oil jets that cool the underside of the pistons, the oil cooler is not required even during extreme operating conditions. Deleting the cooler eliminates a potential leak source and reduces complexity and cost of ownership.