R&G Machining & Engine Parts Inc DBA Grumpy's Performance Center

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

Exhaust

Brakes

Transmissions/Differentials

Mufflers

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.