Grumpy's Performance Center & R&G Machining

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0.0000 stars - based on 0 reviews
27716 S Highway 213 Mulino, Oregon 97042
(844) 253-1115


R & G Machining and Engine Parts, Inc. & Grumpy's Performance Center is located just 10 minutes south of Oregon City in Mulino, OR and provides you with the highest quality engine and cylinder head rebuilding services for domestic, imports, truck, industrial, agricultural and high performance applications. We have a large inventory to serve you quickly and efficiently and we ship engines all over the West Coast.

Diesel engines are our specialty, offering services that include turbos, programmable chips, injections pumps, injector nozzles, and other power enhancements. Our highly trained and professional installers/technicians provide a full array of repair and maintenance services for your vehicles (regardless of make, model or size), RVs and marine.

We offer:

Complete Engine Diagnosis and Repair
Full Service Machine Shop on Premises
Engine and Cylinder Head rebuilt on premises
Tune ups, Oil Changes
Racing engines
Restoration & Collision Repair

Grumpys Performance Center is a One-Stop Service and Dealership Alternative. We have been rebuilding quality engines for over 25 years. We pride ourselves on the continuous quality of our workmanship. We employ state-of-the-art equipment in our new 40,000 square-foot machine shop, warehouse, and repair facilities.

We also offer a complete range of engine kits and components for sale, delivered to your front door.

Give us a call today or e-mail us to have your custom order sent directly to you at a very competitive price.

Business Features


  • Diesel Engines


  • Crankshaft Grinding , Cylinder Boring , Engine Balancing , Engine Installation , Engine Maintenance , Engine Milling , Engine Rebuilding , Engine Repair , Fuel Injection , Honing , Magnafluxing , Presswork , Truck Engine Repair , Truck Fuel System Repair , Truck Repair


  • Buick , Dunlop , Firestone , Lund , Chrysler , Honda , Pioneer , Goodyear , Edelbrock , Western


  • Limousines , Vans , Commercial Vehicles , Classic , German , British , Diesel , European


MONDAY: 8:30AM - 5:00PM

TUESDAY: 8:30AM - 5:00PM

WEDNESDAY: 8:30AM - 5:00PM

THURSDAY: 8:30AM - 5:00PM

FRIDAY: 8:30AM - 5:00PM

SATURDAY: 9:00AM - 11:45AM


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