Diesel Engine Machine Shop in Austin

Since 1983, South Houston Engine has been dedicated to providing exceptional service to Austin residents, Texans, and clients nationwide. Our locally owned and locally operated diesel machine shop is fully bonded, insured, and licensed. Upholding our exceptional reputation, we allow only the most qualified and professional individuals to join our team, as evidenced by our A+ Rating from the Better Business Bureau. Providing the utmost quality craftsmanship in every diesel engine service is our promise to our customers, as we aim to surpass even their loftiest expectations. We prioritize your peace of mind by offering written warranties on all machine and engine work, affirming the trust and confidence you can have in our services. Contact us now to start a conversation about your needs and to discover why we’re considered a household name in the Austin area!

Diesel Engine Services

In our nation, diesel trucks serve a crucial function, laboring tirelessly to deliver essential goods – including food, clothing, vehicles, and countless other items – to places near and far. Constantly traversing highways and roads, they endure considerable strain and damage. Because of their continuous operation, diesel engines are especially prone to failure. Therefore, meticulous servicing is necessary to preserve top-tier performance and dependability for these engines. When key components fail, the typical solutions are typically either engine rebuilding or replacement. South Houston Engine stands out for our excellence in diesel engine rebuilding service. We are proud to get America’s incredible truckers back behind the wheel of their essential machines as quickly as possible and help them avoid unnecessary downtime.

Whether it’s the modest 2-cylinder Kubota or the robust V-12 Caterpillar, our skilled diesel engine repair experts are committed to providing exceptional service. Regardless of your engine’s complexity or magnitude, we’ll handle your needs with a customized approach. Rather than operating as brokers or resellers, we dedicate ourselves to engine production and diesel engine remanufacturing with a completely hands-on approach. Each engine exiting our diesel engine machine shop is an example of our meticulous attention to detail and craftsmanship. Recognizing the urgency of returning your diesel truck to operational status, we extend shipping across the nation with reduced freight rates by sharing our cost savings with our wonderful customers.

As we reassemble an engine, we follow strict quality standards to ensure that your engine complies with or exceeds its original manufacturer specifications. Our dedication to quality extends to our stringent testing methods, which are carried out before the engine’s release to ensure its dependability and performance. From full cleaning and inspections to accurate machining and precise reassembly, our expert specialists handle each phase of the process with great care. Our thorough written warranties cover all of our services. Whether your diesel engine needs a simple tune-up or a full overhaul, we have the reliable crew to complete the job with accuracy and skill.

Align Honing

Exact alignment of main bearing bores is achieved through the meticulous process of align honing. The honing apparatus guarantees accurate concentricity and alignment through material removal. It is a standard practice in an engine overhaul or rebuild, as it rectifies misalignments resulting from improper assembly or wear. It further enhances performance and increases longevity by lowering friction levels.

Jet Spray Cleaning

With the force of pressurized water or solvent, jet spray cleaning efficiently eradicates contaminants like dirt, grease, and oil from engine parts. Tailored for fragile components, it’s an ideal cleaning method routinely applied prior to machining, inspection, or rebuilding.


Milling is a machining procedure that molds or changes engine parts by using a rotary cutting tool to remove material. It is critical for cutting slots, producing smooth surfaces, and attaining accurate dimensions on components such as engine blocks, crankshafts, and cylinder heads to guarantee they meet specifications and work correctly.

Ultrasonic Cleaning

Utilizing ultrasonic technology, this cleaning method activates the cleaning solution through the agitation caused by high-frequency sound waves. Placing engine components like injectors and valves underwater allows the waves to access small nooks, dislodging impurities like carbon deposits. This method guarantees the consistent restoration of components, resulting in improved engine reliability and performance.


Grinding is the process of machining or smoothing surfaces, such as cylinder heads or crankshafts, to remove imperfections or achieve precise specifications. Through this process, engine components are returned to their optimum functionality and performance.


Magnaflux utilizes cutting-edge technology to reveal hidden flaws or defects within metal parts without damaging them. This method begins with the application of a magnetic field to the object, followed by dusting it with magnetic powder. The presence of irregularities on the metal’s surface prompts the powder to gather, facilitating easy identification of any flaws.


Employing specialized equipment, surfacing refines engine components such as cylinder heads or engine blocks for a flat and polished finish. It eliminates imperfections, ensuring gaskets seal effectively and engines operate reliably with appropriate performance and sealing. Smoothing out surfaces is crucial during repair or rebuilding tasks to guarantee optimal performance and dependability.

Crankshaft Inspection

Inspecting the crankshaft entails a comprehensive examination with the goal of uncovering any signs of wear, damage, or misalignment. By completing this process, we confirm the crankshaft’s reliability and operational functionality, crucial for preserving the engine’s performance and increasing its lifespan.

Crack Detection with Sonaflux

Using a distinctive approach, Sonaflux crack detection uses specialized technology to identify faults in parts like engine blocks or cylinder heads with the help of ultrasonic waves. Employing non-destructive inspection methods, this technology safeguards component integrity, facilitating prompt interventions to avoid severe malfunctions and optimize engine operation.

Counter Boring

Counter boring, an integral aspect of Austin diesel engine machining, entails shaping recessed sections to accommodate larger fasteners, bearings, or seals within key components such as cylinder heads or engine blocks. Its purpose is to guarantee correct installation and operation, resolving concerns like compromised bolt holes or establishing smooth surfaces for injector sleeves or valve seats. It is crucial for reliable engine performance.

Thermal Cleaning

Thermal cleaning processes employ high temperatures to clean parts like pistons and cylinder heads, removing impurities and enhancing efficiency. The process involves subjecting the components to high temperatures to rid them of any buildup, all without resorting to abrasives or chemicals. This technique effectively readies components for testing, rebuilding, or machining.

Crankshaft Rebuilding

Crankshaft rebuilding renews the vital revolving part of the engine. The process entails dismantling, cleaning, evaluating, refining, and replacing deteriorated components, like bearings. The purpose is to maintain exact symmetry and proportions, which are critical for optimizing engine functionality and endurance.

Engine Block Rebuilding

During Austin engine block rebuilding, we disassemble, clean, inspect, machine the cylinder bores, and replace damaged components. The purpose is to establish the strength and functionality essential for consistent and efficient performance.


Straightening ensures the proper function and alignment of components like connecting rods and crankshafts by rectifying bends. Employing special equipment, this technique re-establishes the component’s original structure and contributes to improved engine performance and increased longevity.


Honing is a highly accurate process used in diesel engine machining in Austin that works to polish cylinder walls and eliminate flaws, such as groovers or scratches. This step ensures piston rings are correctly positioned, aiding in oil retention for improved engine operation and longevity.


Polishing is the process of refining surfaces to enhance their appearance and minimize friction. It enhances the effectiveness and robustness of parts like cylinder heads, crankshafts, and camshafts.

Flywheel Grinding

Utilizing specialized machinery, flywheel grinding renews the pristine finish of the flywheel. It secures precise clutch operation, eliminates any chances of slipping, and ensures consistent reliability. It’s a standard procedure during clutch replacement or diesel engine rebuilding in Austin to maintain peak performance.


Balancing ensures that rotating components, such as the connecting rods, pistons, and crankshaft, are in alignment and weight is evenly distributed. This decreases vibration, diminishes wear, and improves durability and performance. Balancing may entail altering the weights or placements of parts, which is critical for smooth performance and lifespan in engine rebuilding or maintenance.

Connecting Rod Reconditioning

To ensure impeccable alignment and minimize vibration, connecting rods undergo disassembly, meticulous cleaning, inspection, resizing, and bearing replacement as required. This indispensable method is key to increasing the engine’s longevity and is a standard practice for sustaining performance and reliability.

Pressure Testing

The practice of pressure testing includes placing engine parts, like engine blocks or cylinder heads, under high pressure to reveal any weaknesses or leaks and ensure their trustworthiness and sturdiness. Effective sealing plays a critical role in diesel engines, as it directly contributes to their performance and safety.


O-ringing fortifies seals through the integration of O-rings within the engine block or cylinder head. Its widespread use is geared towards stopping leaks, particularly those of coolant or combustion gases.

Align Boring

Using align boring, we can rectify misalignments and size inconsistencies in main bearing bores. It is a crucial element in enabling the smooth turning of the crankshaft and enhancing overall performance. Its role in rectifying misalignments and mitigating wear ensures consistent engine performance throughout diesel engine rebuilding tasks.

Block Boring

Block boring is a diesel engine machining procedure that restores cylinder shape and size by fixing flaws, such as scoring or scratches. This maintains correct piston ring sealing, which improves engine longevity and performance throughout overhauls or rebuilds.

Electronic Bolt Extraction

Advanced electronic equipment is used in electronic bolt extraction to delicately release difficult bolts and ensure the protection of nearby components. Through the application of controlled force or vibration, these instruments are well-suited for the task of loosening bolts that are overly tightened or corroded. They expedite repairs and reduce the risk of component damage during disassembly or rebuilding tasks.

Cylinder Head Rebuilding

To rebuild a cylinder head, we must disassemble it, meticulously clean all parts, scrutinize for damages, perform machining or resurfacing where necessary, replace any unusable components, and then put it back together. It plays a crucial role in ensuring optimal engine functionality, sealing effectiveness, and long-term durability.


High-pressure blasting, sometimes called sandblasting, involves forcefully projecting abrasive materials onto engine components to eliminate contaminants. This approach is frequently used to prepare parts for painting, coating, inspection, or rebuilding.

Call South Houston Engine today at (713) 910-1212 and speak with one of our experts about how we can meet your diesel engine needs!