JNW is a service company divided in 3 parts, 1st Automotive repair shops and new car dealers send cylinder heads & flywheels for grinding and some blocks for repairs for next day return . 2nd gearheads & do it your self ,bring in engines for hot rods, performance street rods , Pro- racers racing @ local west coast events , and some stock repairs. 3rd JNW will install your new engine , Factory Exchange, to Off Road Racing , dyno tune and service it . Jerry is ASE Certified Master Engine machinest & Auto Tech with specialty areas in Engine Repair & Performance, Brakes & Electrical repair & Electrical diagnosis . Jerry has over 35 years of hands on machining ,repairing and Servicing all makes of piston egines.