Project Gen 3 Subaru STI: Keeping it Cool with Koyo

By Mike Kojima

While awaiting the development of some ARK parts for our Project 3rd generation STI we decided to prep the cooling system in anticipation of the future installation of power parts.  Turbo cars run hot and when being track driven most have problems staying cool, especially on our Southern California tracks which are mostly located in the desert.  We turned to Koyo Cooling systems for one of their race radiators for our car.

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Project GR STI- Generation 3, an Introduction

By Mike Kojima, photos by Jeff Naeyaert

Introduced in 2008, the latest Subaru STI is the third generation of its model type.  Designated GR the new STI is an all new platform.  The new GR chassis has a 3.3 inch longer wheelbase but a 2.8 inch shorter overall length for less overhangs and a lower polar moment of inertia. The new chassis is 2.2 inches wider and 2.2 inches higher and has gained about 70 lbs for a curb weight of around 3,375 lbs.

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