A Look Inside Tanner Foust’s Rockstar Scion Formula D Drift Machine

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 A Look Inside Tanner Foust's Rockstar Scion Formula D Drift Machine
 A huge double pass C&R radiator keeps things cool.   Double pass radiators cool about 15% better with no change in size.  You can see a lot of the detailing of the semi tube frame cage that reinforces the unibody.  The things with allen bolts in them are quick release couplers so the car can be repaired quickly in case of damage.

Engine management is handled by an AEM EMS controlling 8 650CC Denso injectors dumping fuel into a modified NASCAR short course intake with a big 80mm throttle body. Twin Denso fuel pumps feed the injectors. The AEM ECU sends data to an AIM digital dash and a brace of AEM gauges. A custom tuned AEM air intake feeds the engine with custom merged collector stainless headers extracting the burnt exhaust gasses. Magnaflow built the custom oval tubing stainless steel exhaust system.

 A Look Inside Tanner Foust's Rockstar Scion Formula D Drift Machine
 The Magnaflow oval section stainless muffler is a work of art, the oval section gives the tubing enough cross sectional area for the big engine to flow while allowing ground clearance and clearance to the chassis.

Drifting heaps on plenty of brutal abuse and having extra heavy duty peripherals really goes a long way to help keep the engine alive. Drift cars go through some violent high G gyrations and a sophisticated oiling system is a must to keep the engine alive. Conventional wet sumps can allow an engine’s oil system to suck air to the detriment of its bearings. To eliminate this possibility, the engine’s internals are kept basted by a Daily dry sump pump with a Moroso pan, an Ed Pink filtration system and a Patterson oil tank. Cooling is important as well and a custom dual pass C&R racing radiator helps keep things cool. A big Setrab oil cooler also keeps the oil temp under control.

 A Look Inside Tanner Foust's Rockstar Scion Formula D Drift Machine
 The tips make the exhaust look almost street car like to the casual observer!

Power is sent to the wheels via an ultra strong and reliable ACT dual metal disc clutch and lightweight flywheel. A G-Force GSR constant mesh dog engagement 4 speed transmission allows quick clutchless shifting and is sturdy. Power is fed to a MK IV Supra differential sporting an OS Giken LSD and a choice of 4.27 or 3.83 gear ratios. MK IV Supra axles lead to very trick Scion spindles modified to take Supra hubs.

A Look Inside Tanner Foust's Rockstar Scion Formula D Drift Machine
The stock Scion rear uprights were machined and welded beautifully to accept MK IV Supra hubs.
 A Look Inside Tanner Foust's Rockstar Scion Formula D Drift Machine
 A view of the oval exhaust, aluminum driveshaft, tranny and diff breather catch tank and the bottom of the Peterson dry sump tank.  A lot of cool little details are here.
A Look Inside Tanner Foust's Rockstar Scion Formula D Drift Machine
A Supra MK IV rear differential is equipped with an OS Giken LSD.  Two pumpkins with a choice of  4.27 and 3.83 ratios are available to be used for different courses.  As you can see here the stock Scion crossmember is minimally modified to fit the diff.

 

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