Quote:
Originally Posted by 97 SL320
Valve seals and a valve cover gasket are inexpensive to purchase, changing them only takes somewhat time consuming labor. New seals will help even with worn guides and is a good first step if you are unsure how much life is left in the motor.
I've changed valve seals on dozens of engines with good results.
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Have you changed the valve seals on these with overhead cams and buckets? It is not an easy job, especially with the head on, or for the novice mechanic.