Machining Services

Dorman Machine offers many types of engine repair and machining services.

Head Work
  • Cleaning
  • Pressure testing for cracks
  • Magnafluxing
  • Resurfacing to 15" x 36" *
  • Replace guides with standard or performance ones
  • Replace seats
  • Cut seats for oversize valves
  • Valve jobs from standard to performance to full race
  • Cut spring seats for heaver springs
  • Install screw in rocker studs
  • Balance springs
  • Porting work from mild to full race
  • Crack repair
  • Turbo Conversions
  • Cut Fire Ring Groves For Blown Engines
  • Diesel Pre cup work
  • Remove Diesel Injectors
  • Cut Diesel Fire ring groves
     
Brodix 12. 5 Angle Valve Job
Brodix Raised Port Racing Head 5 Angle Valve Job.
Line honing a Big Block.


Block Machining
  • Cleaning
  • Pressure Testing
  • Magnafluxing
  • Resurfacing to 15" x 36"
  • Deck angle & height blueprinting - 3 angle
  • Bore spacing blueprinting
  • Boring up to 6 3/4" +
  • Power honing to 9" +
  • Torque plate boring & honing
  • Plateau honing
  • Oil gallery mods
  • Repair & Mod Sleeving
  • Crack repair
  • Replace cam bearings
  • Line boring
  • Line honing
  • Diesel liner bore work
  • Racing Mods
  • Plus other Race mods



Other Services
  • Flywheel resurfacing from auto to big truck and tractor to 24" OD
  • Connecting Rod Big & Small End Resizing
  • Piston Pin Work
  • Change Piston On Press On Rods
  • Piston Mods
  • Glass Bead Parts
  • Steel Shot Blast Parts
  • 20 Ton Press Work
  • Carb work
  • RR distributors and test for RPM limit
  • Engine component balancing
  • Induction Mods
  • Exhaust Mods
  • Small lathe work 12" x 36"
  • Large lathe work 24" x 120"
  • Setting up ring & pinions in axles
  • Spray Welding


Blueprinting the deck height and angle on a GMC 6.5L Diesel.

Small Block Ford bored & honed with a bluprinting torque plate.
2.5L Subaru Line Hone
Line Honing a 2.5L Subaru
Ford 8N Engine
Ford 8N Engine with over size sleeves
A 16" Cat skid steer drive hub that the bearing surface was build up and ground to size with a snap ring grove.

Ford Big Block
Rat Traps Ford Big Block Power