OEM Dodge Neon Intake Valve

Dodge Neon Intake Valve Parts and Q&A

• Intake Valve
  4884691AA
  Q: How Do Exhaust Valves and Intake Valves Impact Refacing and Valve Seat Inspection on Dodge Neon?

  A:

  Specifications include the dimensions and angles found in valves and seats. If you repair a valve using a proper valve refacing machine and find the margin is too slim, the valve must be replaced; curved intake valves must have at least 0.79 mm (0.0312 inch) and straight exhaust valves require at least 1.19 mm (0.0469 inch). A rework of worn or burned valve seats can be done, as long as the angle and seat width are not affected; the intake valve seat is to be serviced when the width reaches 2.0 mm (0.079 inch) and the exhaust valve seat for widths of 2.5 mm (0.098 inch); otherwise, the cylinder head will have to be changed. Make sure to use the right size valve guide pilot with your valve seat machine, so stones or cutters are reseated properly, completing their surface. Check the runout of the valve seat and guide with a valve seat runout dial indicator, insuring that the total runout is not more than 0.051 mm (0.002 inch). Review the valve seat by using Prussian blue to find areas of contact; cover the seat with Prussian blue and adjust the valve, rotating it softly to see which areas touch the valve seat. When the blue is in the center, the job is done; when it's at the top, lower the seat with a 15 degree tool and if it remains at the bottom, raise the seat using a 65 degree tool. Whether open or closed, your intake and exhaust seats should measure 0.75 - 1.25 mm (0.030 - 0.049 inch). First, check the valve tip to spring seat clearance by measuring distance A, next grind the valve tip until within the required tolerance and last, measure the distance from the valve tip to the spring seat while the valve is installed in the head to ensure you don't chamfer the tip too much.
• Intake Valve
  4648615AC
  Q: How to Service and Repair Exhaust Valve and Intake Valves on Dodge Neon?

  A:

  The first action is to remove the valve spring before anything else. Open the valve only after removing any burrs from the valve stem lock grooves and be sure to identify the valves so that they go back to their original places. Subsequently, take the valve(s) out of the cylinder head. First, apply clean engine oil to the valve stems, then put the valve in the head, next add the valve seal and finally the valve springs.