
Automotive Services
From general auto repair shop to our extensive engine re-manufacturing facility, Thomas Auto is ready to help.
Learn MoreMarine Services
Experiencing issues with your boat’s engine? Have the experts at Thomas Machine give it a look!
Learn MoreFlywheel Services
From flywheel maintenance, to resurfacing, to grinding, our flywheel services will get the job done.
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Engine Repairs & Rebuilds
High-Performance Engine Repair Shop
Thomas Auto Service is a high-performance engine repair shop as well as auto repair shop. We service automobile engines as well as handle marine and boat engine repair. We also provide expert industrial engine repairs and among our specialties are cylinder head repair and flywheel resurfacing. Our shop is located in Deer Park, Long Island in Suffolk County, New York.
We do both basic and extensive engine repairs and rebuilding—from speed boat engines to antique and classic auto engines to diesel auto engine repair. Our skilled technicians are also experts in industrial engines, including forklift truck engine repair, jackhammer compressor repair, and other compressor motor repairs.
- Auto Engine Repair
- Diesel Auto Engine Repair
- Boat Engine Repair
- Flywheel Services
- Industrial Engine Repair
- High-Performance Marine Engines
- Winter Storage Available
- Much More…

Commitment to Quality
High Performance Requires Expertise
At Thomas Machine, we utilize state-of-the-art equipment to expertly disassemble engine blocks, perform precision boil-outs, cut valves, and more. Our services extend beyond high-performance engines to include general auto repairs, boat engine services, and tune-ups. With years of experience delivering exceptional results on a wide range of engines, our commitment to quality is unwavering.
For a comprehensive overview of our services, please visit the Shop & Services page. When it comes to reliable engine repair and rebuilding, look no further than Thomas Machine.

Engine Repairs
Expertise, Affordability & Value
Thomas Machine is dedicated to providing top-quality engine repair and rebuild services at competitive prices. Using advanced tools, we expertly handle everything from block disassembly and valve cutting to precision boil-outs and tune-ups, ensuring optimal engine performance and longevity.
In addition to high-performance engines, we specialize in general auto repairs and boat engine services, delivering reliable solutions that meet a wide range of needs. With years of trusted experience and a commitment to affordable excellence, Thomas Machine is your go-to destination for engine care.

Engine Expertise
Diesel Auto Engine Repair & Rebuilding • Marine & Boat Engine Repair & Rebuilding • Industrial Engine Repair & Rebuilding
Auto Repair Shop • Cylinder Head Repairs • Valve Grinding • Flywheel Resurfacing