Duffin Engine Service

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1227 Hallmark| San Antonio, TX 78216| FAX: 210.341.4251 Voice: 210.341.8183

Duffin Engine Service
is open Monday through Friday 7:30 am to 5:00 pm. Located at 1227 Hallmark,three blocks inside Loop 410, near Airport Blvd. [click for directions]. We offer engine machine shop services for Automotive, Over the road diesel trucks, Industrial, Marine, High Performance and small engines. Duffin Engine Service is committed to keeping current with the latest technologies, to accomplish this we are a member of the Automotive Engine Rebuilders Association(AERA).

AERA is our source for technical and service bulletin information, always keeping us up to date.

Duffin Automotive Engine Repair Service - Machine Shop
San Antonio's #1 Engine Repair, Engine Rebuild, Valve Jobs, Crankshaft Grinding, Diesel and Engine Balancing

We have been serving San Antonio and South Texas for the last 40 years, providing precision engine machine work and engine parts. Through excellent customer service and attention to detail our goal at Duffin Engine Service is to exceed your expectations.

MAGNAFLUXING, CYLINDER BORING & HONING, SURFACING & COUNTERBORES MACHINED, ALIGN BORING & ALIGN HONING, UPPER & LOWER BORE SLEEVING, MAIN BEARING BORES & MAIN CAP SLEEVING, CAM BEARING BORE SLEEVING & ALIGN BORING, PRESSURE TESTING & CASTING REPAIRS.

VAT CLEANING CAST IRON & ALUMINUM, RUST STRIPPING, GLASS BEAD & SHOT PEENING, ULTRA SONIC CLEANING.

CYLINDER HEADS VALVE JOBS, SURFACING, VALVE GUIDE REPLACEMENT & REPAIR, VALVE SEATS INSTALLED, PRESSURE TESTING & ALUMINUM HEAD WELDING (CASTING REPAIR),

MAGNAFLUXING, BIG END RECONDITIONING, REBUSH & PIN FIT SMALL ENDS.

FLYWHEEL GRINDING, ENGINE BALANCING, WELDING & BRAZING (STEEL & ALUMINUM), TRANSMISSION & FLYWHEEL BEARING BORE SLEEVING, BROKEN BOLT REMOVAL & THREAD REPAIR, BROKEN TAP & EZ OUT REMOVAL (METAL DISINTEGRATING).