D&J Precision Machine

Hours: D&J Precision Machine is highly regarded for its exceptional engine building and machining services. Customers praise the business for its honest and helpful customer service, with staff willing to answer questions and guide clients through their build plans. The shop specializes in performance engines, including billet parts like valve covers, intake manifolds, and front covers, which are noted for their clean, high-quality finish and flawless internal baffles that prevent oil leaks and breather issues. Many customers have seen significant improvements in engine performance and reliability, such as reduced EGTs and better flow, thanks to their expertly machined heads and flow-optimized components. The shop also provides custom sizing for injectors and CP3 pumps, along with fluid dampers, ensuring each build meets specific goals, whether for daily towing or high horsepower applications. Customers have driven long distances to purchase their products, emphasizing the shop’s reputation for quality and helpful service. Their engines are described as well-tuned, clean-running, and capable of handling heavy loads while maintaining good fuel efficiency. Overall, D&J Precision Machine is considered one of the most reputable and honest engine shops in the United States, known for delivering great products and customer support for diesel performance and engine modifications.

• 2.98 miles

  

  Gilcher Machine, LLC Machine Shops

1. Cambridge, Ohio