Machine Shop

Custom Machined and Uniquely Designed.

Machine Shop Services

At G & J Diesel, our in-house machine shop is fully equipped with the right tools and expertise to handle all your diesel engine machining needs. We specialize in precision machining, applying years of experience to every project. All machine work is performed on-site by our skilled technicians to ensure each component meets exacting standards for precision and reliability. With our focused commitment to diesel engine performance, we make sure your engine’s critical parts are machined to maximize power and longevity.

Our comprehensive diesel machining services include:

Pricing varies by application. For agricultural and industrial customers, cylinder head machining is limited to components up to 42” in length and 13” in width.

Cylinder Head Resurfacing & Rebuilding

Restoring cylinder heads to a perfectly flat, smooth finish and rebuilding them to ensure optimal compression and efficient performance.

Engine Block Boring & Honing

Precisely boring and honing cylinder walls for proper clearances, which promotes better combustion, power, and engine longevity.

Engine Block Decking

Machining engine block surfaces flat and true, guaranteeing a secure seal for head gaskets and improved engine reliability.

Align Honing

Re-aligning and honing main bearing bores so your crankshaft spins freely in perfect alignment, resulting in smoother operation and reduced wear.

Connecting Rod Reconditioning

Refurbishing and resizing connecting rods to OEM specifications, strengthening this vital link for consistent timing and dependable engine performance.

Rocker & Trunnion Reconditioning

Reconditioning rocker arms and trunnions for a like-new fit, ensuring your valve train operates smoothly and contributes to peak engine performance.

Bake and Ping

The process is a deep cleaning treatment for engine parts. We bake components at high temperature to burn off old oil, grease, and carbon, then “ping” (blast) them with cleaning media to remove any remaining rust or deposits. The result is extremely clean parts ready for reassembly, which helps your engine run better and last longer.

Pressure Check Cylinder Heads

We pressure-test cylinder heads to make sure there are no hidden leaks or cracks. This confirms the head can hold pressure in its coolant and combustion passages, helping prevent issues like coolant loss, overheating, or compression leaks down the road. By ensuring the head is sound, we safeguard your engine’s reliability and longevity.

Grind Crankshaft

We precision-grind the crankshaft’s journals (bearing surfaces) to eliminate wear and restore a perfectly smooth finish. This allows new bearings to fit with ideal clearance and oil flow, ensuring smooth engine rotation, proper oil pressure, and a longer engine life.

Engine Rebuild

A complete engine rebuild gives your diesel engine a new lease on life. We fully disassemble the engine, clean and inspect every component, then replace or refurbish worn parts and carefully reassemble everything to precise factory specifications. This thorough process restores power and reliability, ensuring your engine runs strong for the long haul.