Product Description
BMW N54 Race Series Engine Build - ZNM Performance
ZNM Performance Race Series Engine Build Program
Introducing our BMW N54 engine program—built for enthusiasts who demand reliable power, forged strength, and precision machining from BMW’s first direct-injection twin-turbo inline-6. This page applies to all N54-equipped models, including the E90 335i, E82 135i, E60 535i, and more.
The BMW N54 features a 3.0L inline-6 with twin turbochargers, VANOS, and Valvetronic systems. While highly tunable, these engines are notorious for factory rod bearing wear, weak pistons, and poor crank hub design —making them ideal candidates for a full race-spec rebuild.
That’s where our N54 engine build program comes in. Every engine is fully disassembled, cleaned, and inspected. We install forged internals, precision-machine every surface, and offer upgrades like closed-deck conversion, pinned crank hub, and upgraded valve components for high-horsepower street or track use. Whether you're chasing reliable daily torque or building a 1000+whp street monster, our Race Series N54s deliver.
Our facility in Pompton Lakes, NJ builds engines for customers across the U.S. and internationally. All engines are fully disassembled, measured, and assembled in-house with final clearances precisely set by our team. Please inquire about international shipping options.
Key Features and Options for Our Built N54 Engines
- Forged pistons and upgraded connecting rods designed for high-boost reliability
- Closed-deck block conversion and optional fire-ring head gasket upgrades
- Pinned crank hub upgrade to prevent timing slip under load
- ARP head studs for secure clamping at elevated cylinder pressure
- Built to handle 750+whp with proper tuning, fuel, and cooling systems
Cylinder Head Upgrades for Your N54
- Upgraded titanium valve springs and retainers for high boost and RPM applications
- Valve guide and porting available
Bearing Upgrades for Your N54
- ACL and King bearings tailored for high-load twin-turbo inline-6 applications
- Ideal for street/strip, roll-race, or big power N54 builds
Frequently Asked Questions (FAQ)
Q: How reliable is the stock N54 at high boost?
A: Stock N54s have an open deck design and suffer from weak pistons and rod bearings, often failing beyond 500–550whp. Our builds address these flaws with forged internals, improved oiling, and hub security for long-term reliability at high power.
Q: Can I run ethanol (E85) with this build?
A: Yes. With proper tuning, injectors, and a supporting fuel system, our Race Series N54s can safely run full E85. Forged internals are critical to handle the additional stress from ethanol’s oxygen content and detonation resistance.
Q: What turbo options are compatible?
A: We support hybrid stock-frame turbos and full-frame top or bottom-mount turbo kits. Builds are spec’d around your power goals and intended use—whether street, drift, drag, or half-mile racing.
Q: What head studs do you use?
A: ARP 2000 or ARP 625+ head studs are used depending on your target boost, fuel type, and whether you’re running methanol, ethanol, or nitrous.
Q: Do you offer sleeves for the N54?
A: Yes, we offer Darton sleeve conversions for customers pushing beyond 850whp or running extreme boost pressure's.
