Our cylinder head services encompass a range of tasks, including thorough disassembly, cleaning, and meticulous reassembly. We conduct valve grinding and lapping to ensure optimal sealing, and we’re equipped to replace valve guides, installing bronze guides when necessary. Additionally, we offer spring seat cutting, accommodate oversize valves, and perform surface grinding to restore proper dimensions and finish. This comprehensive approach ensures that cylinder heads receive the necessary attention for improved performance and longevity.

The engine block is dismantled, separating components like pistons, connecting rods, and the crankshaft. Once disassembled, each part undergoes a meticulous cleaning process to remove dirt, grease, and any built-up deposits. Various methods like jet washing, solvent cleaning, and media blasting may be employed depending on the level of contamination. After cleaning, components are inspected for wear or damage, and necessary repairs or replacements are made.

Milling work on powersports and marine engines involves using specialized milling machines to modify the cylinder head and engine block surfaces for various purposes. This process can include milling the cylinder head to increase compression ratio, improve airflow, or correct warpage. Additionally, milling the engine block surface can be done to achieve proper deck height, ensure a flat mating surface for the cylinder head, or enhance piston-to-valve clearance. The milling machine precisely removes material from the specified areas, taking into account the engine’s design tolerances and performance goals.

Magnafluxing, also known as magnetic particle inspection, is a non-destructive testing method used to detect surface and subsurface cracks in engine blocks and other metal components. The process involves magnetizing the engine block by passing an electric current through it or by using a strong magnet. Then, a special magnetic particle solution is applied to the surface of the block. If there are any cracks or defects present, the magnetic particles will be drawn to these areas, forming visible indications. After a specified dwell time to allow the particles to gather, the surface is wiped clean, leaving behind a pattern of accumulated particles that reveal the location and extent of any defects.

The crankshaft is mounted on a specialized grinding machine that rotates the crankshaft while abrasive grinding wheels remove material from the crankshaft’s journals and rod bearing surfaces. The grinding process is carefully controlled to achieve the desired dimensions and surface finish while maintaining proper alignment and concentricity.

In powersports and marine engine maintenance and rebuilding, various miscellaneous machining tasks are essential for ensuring optimal performance and longevity. Removing broken bolts involves careful extraction to prevent damage to surrounding components. Installing Heli-Coils involves threading damaged bolt holes to restore their integrity and strength. Honing is the process of precision machining cylinder walls to achieve proper surface finish and dimensions for optimal piston ring seal. Installing cam bearings ensures smooth and accurate camshaft rotation. Refacing cam followers involves machining to restore proper geometry and surface finish. Re-boring cylinders and sleeving are performed to resize cylinders for new pistons or to repair damage. Reconditioning rods involves machining to restore proper alignment and dimensions. Press work may involve tasks such as pressing bearings, bushings, or other components into place. Each of these tasks plays a crucial role in maintaining or restoring the performance and reliability of powersports and marine engines.

Our goal at OCS marine service is to provide you with complete service for your boat, PWC, ATV and snowmobile, with our trained and insured staff.