LS-Powered Nissan S15: Is This UK V8 Swap The Ultimate Drift Car?

LS-Powered Nissan S15: The Ultimate V8 Swap Project

For many JDM enthusiasts, swapping an American V8 into a classic Japanese sports car like the Nissan S15 Silvia is considered sacrilege. But Martin Oberheim's incredible build proves that sometimes breaking the rules yields spectacular results. This extraordinary 6.2-litre LS-powered creation will be on display at Japfest Silverstone on April 13th, offering UK car enthusiasts a chance to witness this engineering masterpiece up close.

The Philosophy Behind The Build

The concept of replacing the S15's original SR20DET engine with a monstrous American V8 might seem controversial to purists, but Martin's execution demonstrates that this unconventional approach can produce something truly special. What began as an ambitious idea has transformed into one of the most impressive S15 builds in the UK, showcasing what happens when dedication meets engineering skill.

Martin's automotive journey began modestly with a Vauxhall Corsa C featuring a Combat kit, 18-inch wheels and Arden blue paintwork. Progressing through various Vauxhalls and Hondas, including an EK9 and several JDM EP3 Civics, he eventually owned a Nissan 350Z and a Mitsubishi Evo VIII MR FQ-340. It was the latter that inadvertently led him to the S15 project, having grown bored with the Evo's 380bhp performance after just six months.

Finding The Perfect Project Base

The search for the right S15 involved some drama - Martin initially placed a deposit on an S14 shell that turned out to be "kinda stolen." Fortunately, he discovered a rough-but-solid S15 in Aberdeen and negotiated a trade for his Evo. The car arrived with promising foundations including a Nismo 1.5-way LSD, Bride seats, Tein coilovers and a GReddy intercooler, though its URAS Monkey Magic bodykit left much to be desired aesthetically.

The Four-Year Transformation

What began as a "quick engine swap over the winter" evolved into a comprehensive four-year build project undertaken almost entirely in Martin's home garage. The challenge of fitting an LS2 V8 into a right-hand-drive S15 proved significantly more complex than the left-hand-drive equivalents, with clearance issues presenting obstacles at every turn.

Martin explains: "The whole build, bar a little exhaust fabrication, was done in my garage at home. I modified exhaust manifolds to fit, modified the steering column to clear the starter motor, did the wiring, fitted the cage - everything really." Even the paintwork was completed by Martin himself, having developed the skill through years of practice painting items for friends.

Engineering Excellence

This isn't merely a stock LS2 swap. The 6.2-litre powerplant has been enhanced with a Power Plus intake manifold, Pacesetter long-tube headers and an AEM air filter. The transmission consists of a T56 6-speed manual gearbox connected via a Sikky prop shaft to retain the valuable Nismo limited-slip differential. The full Apex 3-inch exhaust system produces a sound Martin describes as utterly brutal.

Originally conceived as a dedicated drift car with a full rollcage and hydraulic handbrake, the finished product proved too beautiful to risk damaging. "It turned out a lot nicer than I anticipated," Martin admits. "S15 parts are getting stupidly expensive and hard to find, so I've ended up using it as a summer car and taking it to shows and meets."

A Testament To British Engineering Skill

The build has been universally praised for its flawless finish and clever engineering solutions, though Martin notes some internet criticism from purists opposed to V8 swaps in principle. His response is characteristically straightforward: "I don't give a f**k if they like it or not anyway."

This LS-powered Nissan S15 stands as testament to what can be achieved with patience, skill and determination. Martin wanted a V8-powered S15, so he built one - and in doing so, created what many consider to be one of the finest S15s in the UK. For those wanting to see this exceptional build in person, it will be displayed at Japfest Silverstone on April 13th.

Photography by Ade Brannan.