Our cylinder shop offers our customers repair and overhaul capabilities for their cylinder needs. Our state-of-the-art honing and boring machine precision grinds the barrel to exacting standards and trueness while automatically holding the required tapered choke for the cylinder. Seats are precision ground and valves are lapped into place. Pneumatic and liquid testing is accomplished for assurance of optimum seating. Special attention is given to proper spring tensions and heights to maximize the performance of the cylinder. Airmark offers an Enhanced Service for volumetric balancing and flow testing of the cylinders. This process matches the volume of the combustion chambers, intake and exhaust ports and flow characteristics for each cylinder. The results are increased horsepower and volumetric efficiency.