Marine Engine Machine Shop in Jacksonville, FL
Automotive Block and Head Welders has provided full-service marine engine machining in Jacksonville, FL, for over 50 years, rebuilding gas, diesel, and marine engines of all types, from small outboard powerplants to large inboard diesels. Jacksonville is one of Florida's most active boating cities, and boaters on the St. Johns River, the Intracoastal Waterway, and out past the Mayport jetties rely on precision engine work to stay safe on the water. Salt air, hard hours on the water, and tidal currents wear an engine down faster than most owners expect, so when one loses power, overheats, or develops a cracked block, getting it to the right machine shop matters. A dedicated marine engine machine shop in Jacksonville, FL, can often restore an engine to reliable service at a fraction of the cost of a replacement powerplant. Call Automotive Block and Head Welders at (904) 384-1510 or visit our contact page to request a free quote.
What Machine Shop Services Do We Offer in Jacksonville?
Automotive Block and Head Welder is a one-stop shop for engine machine work in Jacksonville, FL, handling everything from precision machining and welding to full cylinder head rebuilds.
Services available include:
▸ Cylinder block boring and honing.
▸ Crankshaft grinding and balancing.
▸ Valve jobs and cylinder head rebuilding.
▸ Surface grinding and resurfacing.
▸ Cracked block and head repair, including welding.
▸ Pressure testing for diesel, gas, and marine engines.
Diesel is our specialty, with service for gas, marine, industrial, foreign, and domestic engines across every major make and model.
Marine Machining Services for Inboard and Outboard Engines
Marine engine machining addresses the internal wear and damage that routine service cannot fix. Automotive Block and Head Welders handles both inboard and outboard marine engines, applying precision machining capabilities to boats of all sizes. Services include cylinder boring and sleeving, crankshaft grinding, cylinder head resurfacing and rebuilding, pressure testing, hot tank cleaning, rod resizing, and complete engine rebuilds for gas and diesel marine powerplants, foreign and domestic. Whether an engine has a cracked block from overheating, worn cylinders from high hours, or a warped head from a cooling failure, the shop can evaluate the damage and recommend the right course of action.
Do You Work on Both Inboard and Outboard Marine Engines?
Yes. Inboard engines, common on larger cruisers and fishing vessels, require block boring, head work, and crankshaft grinding. Outboard powerheads, which see significant salt exposure and thermal cycling, often come in for cylinder head rebuilding, pressure testing, and valve work. The shop works on both gas and diesel fuel types and handles domestic and foreign-made powerplants. Boaters running out of Ortega, Mayport, Palm Cove, Sisters Creek, or HarborTown Marina can bring engines directly to the shop at 4066 Lenox Ave, Jacksonville, FL 32254, or contact the team to discuss transport options.
How Long Does Engine Machine Work Take?
Turnaround depends on scope, parts, and engine type. Valve jobs and surface grinding are faster than a full head rebuild or crankshaft grind. We'll give an honest timeline before starting.
Our Engine Machine Shop Process
1. Bring your engine, block, or head to 4066 Lenox Ave, Jacksonville, FL 32254.
2. A technician inspects and diagnoses the component, with pressure testing as needed.
3. The team outlines recommended work and walks you through the scope.
4. Precision machining is performed to your engine's specifications.
5. The finished component is inspected and returned ready to install.
Serving Jacksonville Neighborhoods and Duval County
Located on the Westside, our shop serves drivers and fleets across Duval County, including Ortega, Normandy, Murray Hill, Riverside, the Northside, and surrounding areas like Orange Park and Baldwin. From a single pickup to a fleet of heavy-duty diesel rigs, we're equipped to handle the workload.
Why Jacksonville Boaters Need a Dedicated Marine Machine Shop
Saltwater exposure, high operating temperatures, and frequent use on local waterways accelerate internal wear in ways a general repair shop may not be equipped to address. A marine engine machine shop in Jacksonville, FL, with a crankshaft grinder, cylinder boring bar, surface grinder, and pressure testing setup can restore an engine to specification rather than patch it over. Automotive Block and Head Welders brings five decades of machining experience to every marine job.
Frequently Asked Questions
What Is an Engine Machine Shop?
An engine machine shop performs precision work on internal components general repair shops cannot handle, including boring, honing, grinding, and welding of blocks, heads, and crankshafts to restore proper tolerances.
Does Automotive Block and Head Welder Work on Diesel Engines?
Yes. Diesel machining is a core specialty, covering trucks, industrial equipment, and marine applications alongside gas and passenger vehicles.
Can You Repair a Cracked Engine Block or Head in Jacksonville?
Cracked blocks and heads are often repairable through welding instead of full replacement. We offer Heli-Arc welding and crack repair as part of our full-service capabilities.
How Do I Get a Quote for Engine Machine Work?
Call (904) 384-1510 or visit the contact page to describe your engine issue and request a quote. We'll assess your needs before providing a figure.
Get Expert Engine Machine Work in Jacksonville Today
Automotive Block and Head Welder brings 50 years of family-owned expertise to every job, from a quick valve job to a complete diesel overhaul, delivering precision work Jacksonville customers have relied on for decades. Call (904) 384-1510, visit the engine rebuild page, or stop by 4066 Lenox Ave to speak with a technician directly.
