WATERHOGSWORKS
Classic Kiekhaefer Mercury Outboard
Restoration & Machine Works
Preserve it. Measure it. Machine it correctly. Document everything.
Specialized Services for Classic Mercury Outboards
We specialize in precision machine work, rebuilding and restoration services for classic Kiekhaefer Mercury outboards, with particular attention to the four-cylinder Mercury engines of the 1950s an 1960s.
Cylinder & Powerhead Machining
Precision cylinder boring, finish honing, port-edge finishing and dimensional inspection for classic Mercury powerheads. Every block is measured before and after machining and documented with a final machining record.
- Cylinder inspection & measurement
- Precision boring
- Finish honing
- Piston-to-cylinder clearance setup
- Port-edge finishing
- Final measurement & documentation
Carburetor Restoration
Complete cleaning, inspection and rebuilding of classic Mercury carburetors, with careful attention to original components, fuel passages and proper adjustment.
- Complete disassembly & inspection
- Ultrasonic cleaning
- Fuel-passage cleaning
- Float & needle inspection
- Gaskets & service parts as required
- Reassembly & initial adjustment
Ignition & Magneto Service
Inspection, testing and rebuilding of classic Mercury magneto and ignition systems to restore dependable spark and proper operation.
- Magneto & distributor inspection
- Points & condenser service
- Coil testing
- Wiring inspection
- Spark testing
- Timing setup & adjustment
Powerhead Rebuilding
Complete inspection and rebuilding of classic Mercury powerheads, with careful measurement, correct component fit and attention to original factory specifications.
- Complete disassembly & inspection
- Crankshaft & connecting rod inspection
- Piston, ring & cylinder evaluation
- Bearing & seal replacement
- Precision assembly & clearance verification
- Final timing & setup
Why Classic Mercury Owners Choose Water Hogs Works
These engines deserve more than ordinary machine work. We focus on the details unique to classic Kiekhaefer Mercury outboards — careful measurement, correct clearances, proper machining practices and preservation of original components whenever practical.
Measured Before. Measured After. Documented.
Precision work starts with knowing exactly what we have. Critical dimensions are measured before work begins, checked throughout the machining or rebuilding process, and verified again before the job leaves the shop.
For cylinder and powerhead machining, customers receive a written machining record documenting cylinder measurements, piston dimensions, final bore sizes and piston-to-cylinder clearances.
Classic Mercury Engines We Specialize in
Our primary focus is the classic Kiekhaefer Mercury four-cylinder family of the 1950s and early 1960s, including many of the engines that established Mercury’s reputation for performance.
- Mark 30 / Mark 30H
- Mark 55 / Mark 55A
- Mark 55H / Mark 55H-1
- Mark 58 / Mark 58A
- Merc 300
- Merc 350
- Merc 400
- Merc 450
- Merc 500
- Other early four-cylinder Mercury models
Don’t see your Mercury listed? Contact us with your model and serial number. We’re happy to discuss other classic Mercury applications and determine how we can help.
Mail-In Services for Classic Mercury Owners
Many of our specialized services are available to classic Mercury owners throughout the United States. Powerheads, carburetors, magnetos and other components can be shipped directly to our shop for inspection, machining or rebuilding.
Before shipping, contact us with your Mercury model, serial number and a brief description of the work needed. We’ll discuss the project with you before your parts are sent.
- Cylinder & powerhead machining
- Powerhead rebuilding
- Carburetor restoration
- Magneto & ignition service
- Component inspection & measurement
Have a Classic Mercury Project?
Whether you need a carburetor rebuilt, a powerhead machined, an ignition system serviced or help evaluating a classic Mercury engine, we’d be glad to discuss your project.
Contact Water Hogs Works with your engine model, serial number, photographs if available, and a brief description of the work you need.