race car prep
June 16, 2026
A Critical Detail That Can Make or Break Your Engine When assembling a BMW S54 engine, proper camshaft timing is one of the most critical steps in the entire build process. A small error in timing can lead to poor performance, VANOS faults, excessive noise, and potentially expensive engine damage. […]
June 5, 2026
How Often Should You Service a Drenth DG400 Sequential Gearbox? When it comes to motorsport, reliability isn’t just about finishing races—it’s about protecting your investment and avoiding expensive failures that can ruin an entire race weekend. Recently, a customer brought his Drenth DG400 sequential gearbox to VAC Motorsports after experiencing […]
June 3, 2026
Can Transmission Mounts Cause Missed Shifts? If you’ve ever gone for a perfect downshift in your BMW E36 or E46 and somehow ended up fighting the shifter—or worse, missing the gear completely—you’ve probably blamed the transmission, shifter linkage, or maybe even yourself. The reality is that one of the most […]
June 1, 2026
Why Fuel Cell Foam Matters in Your Race Car If you’ve ever looked inside a racing fuel cell, you’ve probably noticed large blocks of foam filling much of the tank’s interior. Most racers know it’s there. Few understand exactly what it does. Fuel cell foam is one of the most […]
May 27, 2026
BMW Wheel Vibration After Installing Wheel Spacers? Here’s What You Need to Know If you recently installed aftermarket wheel spacers on your BMW and now notice steering wheel vibration, shaking at highway speeds, or inconsistent wheel feel, you are not alone. This is one of the most common issues BMW […]
May 22, 2026
Why BMW E46 M3 Overheating Problems Are So Common The BMW E46 M3 is one of the greatest performance cars BMW ever produced, but as these cars continue to age, overheating issues have become one of the most common and expensive problems owners face. At the center of many of […]
May 13, 2026
“Runs good” can be one of the most dangerous phrases in engine building. I’ve seen engines make solid power on the dyno, idle smoothly, and still have ring seal issues hiding underneath. Then a few weeks later? Oil consumption. Blow-by. Weak cylinders. Tear it all back apart. That’s why leak […]
May 6, 2026
If you’ve spent any time building BMW engines, you already know this moment: you’re mid-build, everything is going smoothly, and then a head bolt doesn’t torque correctly. You pull it back out and realize the block’s threads are compromised. That’s where a straightforward job suddenly becomes a serious decision point. […]
April 29, 2026
If you’ve been around BMW performance builds long enough, you’ve heard about crank hub failure. Some people dismiss it. Others have dealt with it the hard way. The reality is simple:once you start increasing torque, the factory design becomes a weak link. What Is Crank Hub Failure? On engines like […]
April 27, 2026
The Question We Hear All the Time If you’re building a high-performance BMW engine, at some point you’ll ask: “Should I run steel or titanium valve spring retainers?” It’s a great question—and the wrong answer can cost you reliability, money, and peace of mind. Let’s break it down the right […]
April 21, 2026
Real talk—this isn’t speculation. We’re seeing tariff increases approaching 50% on key European-sourced BMW performance parts, and it’s already affecting pricing, availability, and future builds. After decades in this industry, we don’t react to headlines—we watch real numbers. And right now, those numbers are changing fast. 1. What We’re Seeing […]
April 18, 2026
The BMW S65 V8 is one of the most respected naturally aspirated engines ever produced. Designed by BMW M engineers for high-revving performance, it has proven itself across both street and motorsport applications. This build takes that platform significantly further. This is a 750-horsepower supercharged S65 stroker engine, engineered from […]
February 18, 2026
If you’re searching for BMW 4-wheel alignment, BMW wheel alignment, or BMW alignment near me, your vehicle is likely showing signs of improper suspension geometry. From an off-center steering wheel to BMW pulling to one side or uneven tire wear, BMW alignment directly affects handling, braking stability, and tire longevity. […]
February 7, 2026
How to Build Reliable, High-Performance Power the Right Way The BMW S68 is BMW’s most advanced V8 to date—a 4.4L twin-turbo powerhouse that blends classic V8 character with modern hybrid assistance, massive torque, and serious tuning potential. Found in BMW’s latest M, M Performance, and flagship luxury platforms, the S68 […]
December 3, 2025
Weak or Clogged Injector Symptoms You Should Never Ignore (Starting at $129.95) When a fuel injector has a weak coil or its nozzle is clogged, the engine can no longer deliver the correct amount of fuel. This leads to several noticeable performance issues: Loss of Power The engine struggles to […]
November 26, 2025
The Performance Racing Industry (PRI) is roaring back to Indianapolis from December 11–13, and VAC Motorsports will be right in the thick of it at Booth #1743. This year, we’re not showing up light—we’re bringing a technological sledgehammer. Headlining our space will be the VAC Dealer Miami Engines –built 1650HP […]
November 25, 2025
Upgrade Your 2025+ Hyundai Elantra N Interior with Sparco QRT-R Seats and VAC Motorsports Floor Mount Adapters Hyundai’s N-division gave the 2025+ Elantra N a personality that’s part daily-driver, part track-hooligan. The chassis is sharp, the turbo power is punchy, and the whole package loves to be driven hard. But […]
November 24, 2025
Unlocking the Full Potential of the BMW S38: Tilton Multi-Plate Clutch + VAC Lightweight Flywheel BMW’s S38 engine has never been shy about announcing itself. Big displacement, mechanical personality, and the unmistakable howl that defined the E28 M5 and E34 M5. When tuned and built correctly, the S38 becomes something […]
November 6, 2025
The BMW S54 engine — the heart of the legendary E46 M3 and Z4M — remains one of the finest naturally aspirated inline-six engines ever built. With its silky-smooth revs, individual throttle bodies, and motorsport pedigree, it’s a masterpiece of German engineering. Yet, even perfection can be improved upon. At […]
October 16, 2025
BMW’s ///M engines are legendary: high-revving, responsive, and engineered with precision. But beneath the performance pedigree lies a well-documented weakness that has caught many owners off guard: rod bearing failure! Whether you’re driving an E46 M3 with the S54, a V8-powered E9X M3 with the S65, or even the iconic […]
September 30, 2025
2000 BMW Z3 Roadster With a VAC-Built S54: 1240WHP Monster When it comes to pushing the limits of BMW performance, few shops do it like Minnesota Performance. As a longtime VAC Motorsports customer, they’ve taken a humble 2000 BMW Z3 Roadster and transformed it into a 1240 wheel-horsepower beast designed […]
September 26, 2025
BMW’s are engineered for performance — featuring precision steering, a balanced chassis, and a cockpit that hugs the driver. But if you’re over six feet tall, that cockpit can feel more like a squeeze. From cramped knees in an E46 M3 to bumping your head in a brand-new G80 M3, […]
September 22, 2025
Why Hood Struts Fail (and Why It Matters) Most modern vehicles rely on gas-charged hood struts instead of traditional prop rods. They’re sleek, they free up engine bay space, and they make lifting your hood effortless—when they’re new. But with time and temperature changes, these struts lose pressure. That’s when […]
August 4, 2025
How to unlock real power with smart upgrades and VAC Motorsports expertise The BMW N54 engine has earned its place as a tuning legend: twin turbos, forged internals, and limitless potential. But as the platform matures, many enthusiasts are making the leap from stock twins to single turbo setups, chasing […]
July 14, 2025
As a show of appreciation, for each race in 2025-26, we’re recognizing one of our sponsors for their generosity and commitment to BMW Car Club of America. VAC Motorsports was recognized at the recent Summit Point race weekend. For nearly 30 years, Tony Salloum has been racing with New Jersey […]
June 23, 2025
Low vs. High Compression Pistons in BMW Performance Builds: What You Need to Know Whether you’re building a high-revving naturally aspirated E46 M3 or boosting an N54 to four-digit horsepower, your piston choice can make or break your engine’s performance. One of the biggest decisions you’ll face when building a […]
June 14, 2025
The Beginning (1984–1990): The Foundation Years Founded in Philadelphia, PA in 1984, VAC Motorsports began as a BMW-only performance shop, born out of pure racing passion and mechanical precision. At a time when most were just beginning to understand the tuning potential of Bavarian machines, VAC was already blueprinting engines, […]
May 1, 2025
🏁 Oil Surge: The Hidden Killer of High-Performance BMW Engines — And How Dry Sump Systems Save You If you’re building or tracking a high-performance BMW engine—whether it’s a screaming S54, a howling S65, or a turbocharged N54—there’s one danger that doesn’t get enough attention until it’s too late: oil […]
May 1, 2025
Table of Contents: BMW has a well-earned reputation for producing smooth, high-revving engines that deliver both performance and refinement. From the iconic S54 in the E46 M3 to the high-strung S65 V8 in the E9X M3, BMW motors are often designed to spin well beyond 7,000 RPM, and sometimes even […]
April 30, 2025
Turbochargers have become a staple in both modern performance and efficiency-focused vehicles. Even BMW, a historic champion of natural aspiration, especially in ///M cars, has made the switch to boost! Turbos provide more power by forcing extra air into the engine, allowing for better combustion and increased horsepower. However, if […]
February 12, 2025
Maximizing BMW S58 Engine Performance: Best Upgrades & Expert Tips The BMW S58 engine is a powerhouse, delivering robust performance straight from the factory. Found in high-performance BMW M models, this twin-turbo inline-six engine is built for enthusiasts who crave power and reliability. However, with the right upgrades and best […]
February 12, 2025
Turbocharging Your BMW M50 Vanos Engine – The Ultimate Build Guide If you’re looking to build a high-performance turbocharged BMW M50 Vanos engine, you’ve come to the right place. At VAC Motorsports, we specialize in high-performance BMW engine builds, supplying top-tier components and expert machining services to ensure reliability and […]
June 1, 2026
Why Fuel Cell Foam Matters in Your Race Car If you’ve ever looked inside a racing fuel cell, you’ve probably noticed large blocks of foam filling much of the tank’s interior. Most racers know it’s there. Few understand exactly what it does. Fuel cell foam is one of the most […]