Stiegemeier Porting Services

09/02/2026

Powder coating available!

08/21/2026

We offer our Venom Cooler modification for many different superchargers.

08/12/2026

Is your Chevy Cobalt SS supercharger making noise, losing boost, leaking, or simply ready for a complete refresh? At Stiegemeier Porting, we specialize in professional Chevy Cobalt supercharger rebuilds, including service for the Eaton M62 supercharger found on supercharged Chevrolet Cobalt SS applications.

Our complete supercharger rebuild service is designed to restore reliability, efficiency, and performance. Depending on the condition of your unit, service can include all new high-speed bearings, coated rotors, PTFE directional seals, inspection of critical components, and professional reassembly.

If you own a Chevy Cobalt SS Supercharged, Saturn Ion Red Line, or another vehicle using the Eaton M62 platform, proper supercharger maintenance can help protect your investment and keep your boost system performing as it should.

Need your Cobalt supercharger rebuilt or want to discuss performance options?

Stiegemeier Porting
Repair – Rebuild – Restore
📞 636-949-2275
🌐 Stiegemeier.com
📍 2140 S. Old HWY 94, St. Charles, MO 63303

Contact us before shipping your supercharger so we can discuss your application and service needs.

08/11/2026

Take advantage of your inner cooler system by tapping into your heat exchanger and cooling your supercharger to produce more horse power!

08/03/2026

07/31/2026

We have a few ready to ship Verado superchargers. One is non water cooled and fits years 2004-2014. The other is water cooled and fits years 2015 and up. Give us a call at 636-949-2275 or shoot us a message for pricing.

07/23/2026

🚨 We're Going LIVE with Dyno Bob! 🚨

Have a question about superchargers, porting, performance, or getting the most out of your build? Now's your chance to ask!

Drop your questions in the comments below and Dyno Bob will answer as many as possible during our next live session. Whether you're working on an SVT Cobra, Lightning, Hellcat, Verado, Mini Cooper, or another roots-style supercharger, we'd love to hear from you.

Topics can include:
🔹 Supercharger rebuilds
🔹 Porting & airflow
🔹 Pulley combinations
🔹 Performance upgrades
🔹 Troubleshooting
🔹 Horsepower goals
🔹 General tech questions

No question is too basic or too advanced—we're here to help.

👇Leave your questions in the comments and you might hear yours answered live!

Stiegemeier
Repair • Rebuild • Restore
🌐 Stiegemeier.com
📞 636-949-2275

06/25/2026

Don't Replace It. REBUILD It.

Get your supercharger performing like new with a professional rebuild from Stiegemeier.

We rebuild:
✅ Eaton
✅ Whipple
✅ Mercury Verado
✅ Magnuson
✅ And most other Roots-style superchargers

Every full rebuild includes:
• All new high-speed bearings
• Coated rotors
• PTFE directional seals

Save money, restore performance, and keep your boost where it belongs.

📞 636-949-2275
🌐 Stiegemeier.com

Repair • Rebuild • Restore

06/23/2026

⚡ M45 SUPERCHARGER REBUILDS ⚡

Restore the performance and reliability of your MINI Cooper S R53 with a professionally rebuilt Eaton M45 supercharger from Stiegemeier Porting.

Repair • Rebuild • Restore

🌐 Stiegemeier.com
📞 636-949-2275

06/19/2026

The Eaton M112 superchargers found on the SVT Cobra and SVT Lightning are legendary—but after years of service, they deserve the attention of experienced hands.

At Stiegemeier, we specialize in Supercharger Rebuilds to restore performance, reliability, and efficiency. Every unit is carefully inspected, rebuilt, and assembled to help get your vehicle back to performing at its best.

✅ Factory Spec Restoration
✅ Upgraded Reliability
✅ Precision Assembly
✅ Fast Turnaround

Whether you're maintaining a low-mile survivor or keeping your weekend warrior running strong, we're here to help.

📞 636-949-2275
🌐 Stiegemeier.com

Repair. Rebuild. Restore.