Hemi Head Machining

 

Used Heads are prepped as follows:

• Cast iron heads are hot tanked and magnafluxed
  
  
• Cast iron heads are shot cleaned for a 'like new' finish
  
  
• Aluminum heads are jet washed

New and Used Head Inspection:

• Heads are checked and guides are replaced as required.
  


• Bronze alloy guides and liners are honed
  
  
• Hardened seats are installed when required.
  
  
• A full radius valve job is performed on Sunnen VGS-20
  
  
• Bowls are opened up and blended into port.
  
  
• All surfaces are machined
  
  
• BHJ indexing plate installed and O-ringed when required.
  
  
• Optional 5 Axis CNC porting service. Flow bench testing performed on SuperFlow SF-600S
  
  
• Pushrod tubes are enlarged and bushed when required.
  
  
• Combustion chambers are CC'd and equalized.
  
  
• Coolant pressure test

The following clearances are checked and modified as required:

• Valve to valve
  
  
• Keeper to guide at maximum cam lift
  
  
• Valve spring installed heights
  
  
• Coil bind
  
  
• Valve tip heights

We also:

• Machine valve tips for lash caps when required
  
  
• Test all spring pressures against specifications
  
  
• Supply part numbers and spec sheet for your finished heads.