Every once in a while, we see something that makes us scratch our heads and mutter to ourselves, "What the hell were they thinking when they decided to do that?" The ever-popular spoon/fork hybrid we know as the "spork" is a perfect example, but this bastard Nissan is up there on the list. But, like the inventors of the spork, the owner of this car had a method behind his madness.
When Chinen Yoshikuni decided to build a demo car to show off his skills and the caliber of work done at his shop, C&Y Sports, he knew he had the perfect opportunity to show Japanese tuners just what a crazy and bad-ass car he was capable of building, and in the process, mop up the competition at the track.
His weapon of choice was the S15 Nissan Silvia. A capable and widely supported car in both the JDM and USDM markets, it would have been a cakewalk to just grab a bunch of off-the-shelf parts and build a plenty-fast track car. But that wasn't the point. All that would prove is that he has deep pockets and that C&Y has the ability to bolt on a few parts. Any clown can do that. No, Yoshikuni had a dream.
To show just how good his shop is, Yoshikuni decided to do things the hardest possible way. And in this case, that meant ditching the stock SR20. But instead of just installing a Nissan RB26 mill and calling it a day, he went off the deep end and started the build by doing the unthinkable... dropping in a Toyota engine. What better way to show off your skills than by doing something that's never been done before?
Shoehorning the potent Toyota 3SGTE into the S15 wasn't really a matter of just "dropping" it in, though. While the engine was still out of the car, he cut the chassis up a little so he could mount the 3SGTE mill a little farther back in the S15's frame to promote better weight distribution. Making sure the car was well balanced was of major importance. The car was built to do it all, drag racing, road racing, drifting, time attacks and whatever else he can throw at it, so it's gotta be incredibly well balanced.
A lot of time, fabrication, work and money was needed to get the car where it is now (over 6 months and $60,000), but the engine swap was just the beginning. Before the engine was swapped in, it received some serious massaging.
The 3SGTE was built from the ground-up to make some serious power. To hang with the fastest cars over on Yoshikuni's side of the Pacific, it needed a little bump in displacement, from 2 liters to 2.2 liters. This was accomplished using a JUN Auto crankshaft, a set of HKS connecting rods and oversized JUN Auto pistons.
While those mods alone would make any 3SGTE owner salivate, they're only the tip of the iceberg for the power mods. Everything you'd expect to see on a race car is present, including HKS intake and exhaust camshafts, HKS piston rings, and HKS valve springs. But not everything under the hood was off-the-shelf.
Everything on this car has been gone over and much of it is decked-out in custom parts, and the engine bay is no exception. Pop the hood and your eyes will feast on a buffet of custom one-off pieces, all fabbed up just for this car by its owner, including the manifolds.
The Toyota 3SGTE has a notoriously inefficient factory intake manifold and C&Y fixed that problem in short order, fabbing up the gorgeous sheet metal intake you see on the pages before you. On the exhaust side, they welded up a custom exhaust manifold to bolt the massive HKS T04Z turbocharger to. The downpipe and exhaust are, obviously, custom pieces as well.
A Blitz Racing wastegate works in conjunction with a Blitz SBC i-color boost controller to keep the boost level rock steady. For whatever reason, the guys at C&Y decided to forgo a blow-off valve altogether. Other custom engine bits include solid engine mounts, an Infiniti Q45 throttle body and a 4-inch downpipe, just to name a few. But C&Y Sports certainly didn't fabricate one of the hottest parts on this ride.
Sitting behind the bastard Toyota engine is a HKS sequential 5-speed transmission, which is almost as exciting as the Toyota mill under the hood. But, as sweet as that transmission is, it wouldn't do any good without a perfectly running engine. Everyone knows the importance of powerful and flexible engine management, and this S15 has some of the best electronics available.
Take one look at the massive SARD 1000cc/min injectors and you know we're talking about some serious horsepower here. In fact, this thing drinks enough fuel under boost that C&Y had to install two Tomei "special" fuel pumps to keep it from starving. An HKS fuel rail and SARD fuel pressure regulator round out the mechanical end of the fueling situation while an HKS F-Con V Pro takes care of all the calculations for fuel and spark delivery.
And, on the topic of spark delivery, the direct ignition Maltea coil ignition system in this Toyota/Nissan bastard is plenty up to the job of igniting the 700hp worth of air/fuel mixture in the combustion chamber, thanks in part to a set of Blitz Racing No. 9 spark plugs.
Compressing enough air to make that much power generates a lot of heat, all of which is cooled by a Trust R-Special 3-row intercooler. The chilled air is guided to and from the turbocharger by custom C&Y charge pipes.
The owner tells us that the car makes over 700hp at 8,800 RPM, but that the torque number is still unknown. Additionally, C&Y just finished the car right before we shot it, so they don't have any quarter-mile times (or 400-meter times in Japan) but we'll bet our bottom dollar (or yen) that it will post some impressive times.
Enough about the engine though, there's a lot more to this car than just raw horsepower. No matter what type of racing you are doing, having the appropriate suspension setup is key if you want to stand a chance. But, since this car was built for everything, finding the most flexible and tunable system is even more important.
Currently, the car is running special drag racing dampers in the front with 6k springs. Out back, the setup is a little more conventional, with APEXi N1 dampers and springs. Other suspension mods include ARC sway bars front and rear, pillow ball bushings and a Cusco front strut tower bar.
As would be expected on any race car, this S15 has upgraded brakes, with the front wearing TRUST 4-pot calipers and the rears sporting GTR Kai 2-pots. The brake pads are Rubix metallic all around.
It's almost a shame to cover up those awesome brakes, but the Speed Star Racing SSR Professor wheels are even more beautiful. Measuring 18x8.5 in the front and 17x10.5 out back, and wrapped in Nitto 555 rubber measuring 235/45/18 in the front and 315/35/17 in the rear, this ride has got plenty of grip for whatever racing C&Y are doing that particular day.
Moving on to the interior, the stock instrument panel was gutted and replaced with a no-nonsense SARD Stack meter, which eliminated a lot of clutter that would have resulted from using a bunch of individual gauges-a nice touch we really appreciate. The Stack helps the driver concentrate on driving and not looking at a bunch of different gauges all over the interior. Sets of Bride Zeta seats keep driver and passenger firmly planted in the corners.
It's good to see people trying crazy and new things, like putting this particular engine in this particular car. When we first saw it, we couldn't help but wonder why. But hey, how can we argue with the results. C&Y set out to get some attention, and they certainly got ours. Obviously, they know how to play the game-even if it means doing it in an unconventional way-just like the inventor of the spork.
Name. Chinen Yoshikuni
Hometown. aichi-ken nishi kamo-gun
Occupation. Owner of C&Y Sports
Hobbies. All types of motorsports
Build time. six months