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Looking at buying a 1997 993; why would someone do an engine overhaul at 80,000 miles?

  • 1997
  • 911 Carrera
93 000
San Diego, 

We're looking at a beautiful car in superior condition with extensive service records (1997 911 - 993). The prior long-time owner -- at 81,000 miles and 9 years ago -- spent thousands of dollars to have the engine and Tiptronic transmission removed and gone through. The cylinder heads were disassembled, the valve guide seals were replaced, the piston ring grooves and passages were all cleaned, piston rings replaced, and the cylinder heads were decarbonized; intake and exhaust valve seats ground, and the 6 exhaust valve guides were replaced. Also, they ground the valves and valve seats. Meanwhile, they replaced all the belts, spark plug wires, distributor caps and rotors, etc. There's no mention in the records of there having been a problem, and the sales guy is referring to some Porsche recommendation that this kind of work be done at 100,000 miles. Fast forward to today, and the car has 93,000 miles and hasn't been driven much in the last couple of years. The car looks to be in almost showroom condition, including new tires and almost new brakes. Anyone have any concerns I should consider?

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