Arthur told him to email photographs and serial numbers, along with the questions he had not been able to answer from published documents. He warned that he could not certify an unseen component by telephone and would not pretend to remember every revision after decades away from the dealer. But he could point Noah toward the right service bulletins, identify common areas of wear, and sometimes explain why two visually similar parts belonged to different applications.
Over several conversations, Arthur became another voice in the workshop, though he seldom visited in person. He disliked grand claims, especially those made by teenagers who had watched too many restoration videos. "A photograph proves what something looked like when you took the photograph," he told Noah. "It doesn't prove what's happening inside the metal. Keep that distinction straight and we'll get along."
Engine six had a cylinder surface damaged badly enough that repairs would cost more than replacement. Engine seven provided usable brackets and an accessory housing after careful examination. Engine eight contained several small components that appeared serviceable but needed additional measurement. Engine nine had a damaged crankshaft and became another strong candidate for scrap after any worthwhile parts had been evaluated.
The tenth engine was a lesson in deceptive cleanliness. Its exterior had been washed before the auction, making it appear better than machines covered in heavy grease. Once Noah removed the accessible covers for inspection with appropriate assistance, he found evidence of contamination and wear that the clean exterior had concealed. The discovery cured him of his tendency to equate tidy machinery with healthy machinery.
Engine eleven was different. Its identification plate was readable, and the manufacturer number appeared in a section of Earl's notebook describing drive components for older industrial generator systems. The complete engine was not promising: important parts were missing, and an earlier repair had left damage that needed further evaluation. But one mechanical drive component remained protected inside a relatively intact section of the assembly, and its markings were clearer than any Noah had seen elsewhere in the lot.
He photographed it carefully, recorded the stamped code, and copied the dimensional references from Earl's notes. He did not remove it immediately. He wanted to understand how it was supported and whether its condition could be assessed without damaging anything else. For now he wrote POTENTIAL GENERATOR COMPONENT; APPLICATION NOT CONFIRMED and left the engine in its designated place.
Engine twelve turned freely but lacked a major fuel-system assembly; engine thirteen had more useful external accessories than intact internal parts. Engine fourteen came from an industrial pump application with a housing pattern he did not recognize. Engine fifteen had been cannibalized heavily, leaving little immediate value beyond a few identifiable assemblies. Engine sixteen, nearly hidden beneath grime and old paint, carried another plate from a family still used on farms, though Noah had not yet found the right documentation to evaluate it.
Four engines were plainly uneconomical to rebuild as complete machines. Several more required repair costs beyond what Noah could presently justify. But there were components worth investigating in the remaining inventory, and the differences between them were slowly becoming legible. The engines that had looked like a uniform pile of failure at the auction were beginning to reveal sixteen distinct histories of wear, neglect, modification, and survival.