🔧 Clay’s Auto Parts & Machine – San Antonio’s Trusted Name in Engine Rebuilds & Precision Machining 🛠️
Overview
Located in the heart of San Antonio, TX, Clay’s Auto Parts & Machine has built a reputation over the years as a go-to shop for high-quality engine machining, cylinder head work, and automotive parts. Nestled at 1315 South Presa Street, this locally-owned shop is known for its experienced team, vast knowledge of classic engines, and commitment to getting the job done — whether it’s a full engine rebuild or a simple valve job.
While opinions may vary depending on the project, many customers return to Clay’s because of their hands-on service, affordable pricing, and the rare ability to work with vintage and performance engines. It’s a place where gearheads, classic car owners, and local mechanics find not just service, but solutions.
Services
At Clay’s, you’ll find a wide range of automotive machine services and parts support, including:
- 🔩 Engine Rebuilds (Short & Long Block)
- 🧰 Cylinder Head Repairs & Valve Jobs
- 🛠️ Crankshaft Polishing & Bearing Sizing
- 🧪 Block Cleaning & Inspection
- ⚙️ Piston & Camshaft Services
- 🧷 Custom Engine Work for Classic & High-Performance Builds
- 📦 Parts Sales (Bearings, Gaskets, Pumps, etc.)
- 🪨 Bonus: On-site rock & gem store for collectors and kids!
Pros
✅ Vast expertise in classic and performance engines
✅ Competitive pricing and turnaround times
✅ Friendly, knowledgeable staff always ready to advise
✅ Locally owned business with personalized service
✅ Trusted by mechanics and car builders across San Antonio
✅ Quick fixes like crank polishing and battery replacements at affordable prices
✅ Rare shop that still works hands-on with vintage engines like the ‘63 Cadillac 390
✅ Community feel with customers often showing off finished projects
Opinions
Opinion 1 – Repeat Customer Experience
“Jordan was amazing! He helped me with crank polishing and bearing sizing — this shop is efficient, professional, and always treats you with respect. Been here twice already and it’s my first stop if I ever need engine help again.”
Opinion 2 – Old-School Craftsmanship
“Took my big block Chevy heads in and got exactly what I asked for — no upsell, no fluff. Just solid workmanship. Drove the truck back to the shop to thank them in person. They get it right.”
Opinion 3 – Mixed Emotions
“They are knowledgeable and do great work when they deliver — but communication was poor and I felt misled. After nearly 4 months of delay, I found reused parts and poorly cleaned surfaces. Their honesty and follow-through need improvement. Watch out for details.”
Opinion 4 – Local Gem
“Love having this place in my neighborhood. Friendly staff, helpful advice, and fair pricing. I’ve had aluminum heads resurfaced here and the results were flawless. Years later, the engine still runs strong.”
Opinion 5 – Honest & Affordable
“I went in over my head and Clay’s team talked me through everything. Patient and honest — they fixed issues another shop said couldn’t be done. Saved me hundreds and earned a customer for life.”
Conclusion
For many in San Antonio, Clay’s Auto Parts & Machine is more than a machine shop — it’s a local institution where engines are revived and customers are educated. From crankshaft polishing to complete engine rebuilds, Clay’s delivers solid results backed by decades of hands-on expertise.
While not without occasional criticisms, most customers agree on one thing: when you need honest work at fair prices, Clay’s is worth the visit. Just be sure to ask questions, stay involved, and appreciate the rare skillset they bring to Texas engines.
📍 For dependable engine repair and machine work in San Antonio, Clay’s is your old-school garage with real horsepower. 💥