When Toyota released its second generation MR2 in 1990, the car was widely criticized for its sphincter-puckering handling characteristic. Some of the world motoring press called it "snap-oversteer", and it happened if you came into a corner too hot and lifted off the gas at precisely the wrong time. Others left their foot up in it, picked off another gear and called it fun.
Whether it was an engineering flaw or simply a trait of the mid-ship design, Toyota dealt with the issue in the MR2's '93 face-lift. It altered the suspension geometry with longer toe links in the rear and specifying the car with fatter back feet. The modification went a long way in dulling its nervous twitch, but not at the expense of the driving pleasure ingrained in the MR2's DNA.
Having already cut his teeth in a couple of earlier model AW11 MR2s, New Zealand engineer, Scott Finn always knew he would find his way back into Toyota's Midship Recreational 2-seater. "I wanted an SW20, but didn't want an earlier generation one," says Scott. "When I saw this '94 GT-S, I immediately sold my Mitsubishi Lancer Evo IV - it was exactly what I wanted." Well, maybe not "exactly".
Scott purchased the car as a stock JDM import. It was meant to stay that way too, but having extensively modifying his last two cars, it was never going to happen. "At first I was just going to upgrade the turbo, but the TD-06 I got my hands on turned out to be a bit of a lemon and didn't last too long. So I parked the car for a couple of months and had the turbo rebuilt. That was when I met Jono Climo from Performance Metalworks."
If you're a compulsive modifier, making friends with one of your country's most respected performance fabricators is probably not going to help you break the habit. As expected, things quickly got out of hand. "Jono had started building a twin-charged 3S-GTE engine for an old school Corolla," says Scott. "It was going to be a pretty serious package but he had never got around to finishing it. When he offered it to me I snapped it up!" What Scott got was a knife-edged crank, Eagle H-beam rods, forged JE pistons, and pair of Kiwi-engineered Kelford 280-degrees/10.5mm-lift camshafts. In other words, the perfect starting point for a high horsepower build.
Now that might sound like a recipe for disaster, but according to its creator, it couldn't be further from the truth. "There are lots of little modifications made in every area," says Scott. "And even though it has a lot of power, it's very easy to drive."
That engine build was entrusted to Speedtech Motorsport - one of New Zealand's top import tuners - and the collective brains behind some of the world's quickest Mitsubishi Lancer Evolutions. STM resin-filled and o-ringed the MR2's block and bolted in the heavy-duty bottom end gear. Up above the cylinder head got the full treatment: race porting; HKS valve springs; JUN titanium retainers and Venom adjustable cam gears. ARP 11mm head studs and an HKS metal head gasket sealed the deal.
Although the TD-06 had been rebuilt, it never found its way back on to the 3S-GTE. In an effort to reduce engine bay temperatures - an SW20 vice - a bigger Garrett GT35/40 got the green light. Scott worked on the notion that the larger turbo wouldn't have to work as hard as the smaller one in order to achieve the same power output goals. To further that cause, Jono took on the task of fitting a huge air-to-air intercooler with twin 10-inch thermo fans in the Toyota's rear trunk, and custom fabricating aluminum pipe work to suit. The tubular exhaust manifold, exhaust system and bespoke plenum chamber are all his handywork, too.