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|Damper Spring Included:||No|
|Intake and Exhaust Valves Included:||Yes|
|Rocker Arm Nuts Included:||No|
|Rocker Arm Studs Included:||Yes|
|Rocker Arms Included:||No|
|Valve Guides Included:||Yes|
|Valve Seats Machined:||Yes|
|Valve Springs Included:||Yes|
|Valve Stem Seals Included:||Yes|
|Valve Stem Seals Type:||OEM|
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Comments about Spartan/ATK Engines Cylinder Head Remanufactured:
Came ready to go. Just needed exhaust stud nuts. Everything was clean and in great condition, ready to install.
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Q:What are the symtoms of worn or leaking valves in these cylinder heads??? Vehichle is a 1997 Ford F-150 5.4L V-8 4X4...
A:Hi WJD, my answer to your question on the Spartan/ATK Engines Cylinder Head Remanufactured - part# 2FX7 is that the diagnosis of a burned valve is usually the result of a compression test. If a cylinder shows little or no compression, it frequently means the exhaust valve is not sealing. The valve may or may not be actually burnt (melted), but have other physical damage such as cracks or areas where pieces of metal are missing or eroded away from the valve face. The cure for this condition is to remove the cylinder head, replace the bad valve and reface (or replace) the valve seat. As a rule, the head is usually given a complete valve job at the same time because the rest of the valves and guides probably need attention, too. If one exhaust valve has failed, the rest are probably on the verge of failure if they haven't already started to leak.