Product Description
BMW S58 Race Series Engine Build - ZNM Performance
ZNM Performance Race Series Engine Build Program
Introducing our BMW S58 engine program—engineered for enthusiasts who demand top-tier performance, precision craftsmanship, and long-term durability. Every S58 engine is carefully disassembled, inspected, and rebuilt with premium OEM or upgraded forged components to withstand extreme conditions.
The BMW S58 is a high-performance evolution of BMW’s inline-6 turbo architecture, featuring a closed-deck block, forged internals, and twin turbochargers. While it is stout from the factory, pushing it past OEM limits—especially with increased boost, track abuse, or high RPM—can expose weaknesses in components like the pistons, rods, and head sealing.
That’s where our S58 engine build program steps in. We take each engine down to the bare block, inspect every surface and dimension, and rebuild it with race-grade internals, fire-ring head gasket solutions, and optional enhancements like port injection or sleeving—tailored to your power targets. Whether you’re building a daily-driven monster or a full-time track machine, our built S58s are designed to deliver relentless power and reliability.
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 S58 Engines
- Fire Ring head gasket setup to prevent head lift under extreme boost
- Block deck machined for stainless o-rings—ideal for high-cylinder-pressure builds
- Optional ductile iron sleeving service for maximum cylinder wall integrity
- Choice of Darton sleeves or Italian Rod and Piston sleeves
- Built for extreme power with long-term reliability—ideal for high-horsepower street or motorsport use
Cylinder Head and Valvetrain Options Available for Your S58
- Complete cylinder head disassembly, hot tank cleaning, and crack inspection
- Precision multi-angle valve job and deck resurfacing for optimal sealing
- GSC or Kelford camshaft options available for Stage 1, Stage 2, or Stage 3 builds
- Upgraded titanium valve springs and retainers to support high-RPM stability
- High-performance valve guides for enhanced heat tolerance and longevity
- Upgraded intake and exhaust valves for improved flow and boost resilience
- Designed for serious street, drift, or track use where top-end durability is critical
Stroker Kits Available for Your S58
- Brian Crower 3.2L - Includes 4340 billet crank, 96mm stroke, MOAR rods w/ARP625+ fasteners (5.945" c-to-c) and custom pistons
- Brian Crower 3.4L - Includes 4340 billet crank, 100.6mm stroke, MOAR rods w/ARP625+ fasteners (5.828" c-to-c) and custom pistons
- Italian Rods & Pistons 3.2L Stroker Kit
Frequently Asked Questions (FAQ)
Q: Can the stock S58 engine handle high boost?
A: The S58 is built strong with a forged bottom end and closed-deck block, but extended high-boost use can push the limits of the factory head gasket, pistons, and rods. For consistent reliability over 800 HP, upgrades are essential.
Q: Why should I sleeve my S58 block?
A: While the S58 has decent bore support, sleeving becomes necessary when using oversized pistons or when the block has sustained scoring or coating damage. Ductile iron sleeves provide unmatched strength and longevity.
Q: What is a Fire Lock head gasket and when is it needed?
A: A Fire Lock head gasket uses stainless o-rings cut into the deck to prevent head lift and seal combustion chambers more effectively. It's strongly recommended for high-boost S58 builds running over 30 PSI.
Q: What cylinder head upgrades do you offer for the S58?
A: We offer full teardown and inspection, precision valve jobs, Stage 1–3 camshaft packages, and upgraded springs, retainers, guides, and valves to optimize flow and reliability under load.
Q: How much power can your Race Series S58 build handle?
A: Depending on the components selected, our Race Series S58 builds are engineered to handle between 900–1500 HP with proper supporting mods, fuel systems, and tuning.
