OEM 2007 Dodge Dakota Exhaust Valve

2007 Dodge Dakota Exhaust Valve Parts and Q&A

• Q: How Can Exhaust Valve and Intake Valve Seats Be Reworked to Ensure Proper Refacing on 2007 Dodge Dakota?

  A: If the valve seat is damaged or warped, it can usually be fixed by machining, provided the angle and seat width are not changed; if either of these measurements are wrong, the whole cylinder head must be changed. To get the perfect surface when refacing valves and seats, you must use the right size valve guide pilot for installing replacing stones. First, measure the middle of the valve seat using a dial indicator to confirm that total run out is below 0.051 mm (0.002 in). Add a bit of Prussian blue to the valve seat, insert the valve (4) or (5), apply light pressure and move it with a quarter turn. When the valve is removed, inspect the valve face; if the blue dye is spotted below the top edge, bring down the valve seat with a 15 degree stone and if it is on the bottom, lift the valve seat with a 65 degree stone. Every intake seat needs to still have a width of 1.75 - 2.36 mm (0.0689 - 0.0928 in.) and the exhaust decreases to 1.71 - 2.32 mm (0.0673 - 0.0911 in.) after it is placed. Just after the valve and seat are refaced, confirm that the installed height of both valve springs (intake and exhaust) is less than 40.74 mm (1.6039 in.). The face angle between the valve seat and valve face ought to be kept within 44.5 - 45°.