Sneak Peek: Team R-Colt Time Attack Mitsubishi Ralliart Colt


The engine was fortified to handle the boost coming from a Borg Warner EFR 6258 turbo with the 0.64 A/R turbine housing. The EFR turbos can be equipped with an optional speed sensor, so Team R-Colt did exactly that and protected the speed sensor wire in some insulation. The stock integrated BOV on the EFR was replaced with a Turbosmart Kompact BOV.
Packing is often tight in FWD cars with transverse engine layouts. The built downpipe has to make a tight turn coming off the turbo.
The intercooler core is a bar and plate unit from Garrett with custom fabricated end-tanks to make everything fit. Above the intercooler (behind the grill) is a 14-row oil cooler to help keep the Neo Synthetic Oil at proper operating temperature.
You MotoIQ readers know, thermal management is critical to a reliable track car, so a vented hood is used to maximize the effectiveness of the cooling systems.
The exhaust? Team R-Colt built that too using 3” titanium to minimize the weight.

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