I own a repair shop in Las Vegas. Have a customer with a 1967 Dodge D-100 with a slant 6. He supplied all the parts to overhaul the engine. I removed the engine, sent it to the machine shop, had the block bored, and engine built. It received a new crankshaft, rods, pistons, rings, bearings, camshaft, timing chain, oil pump Etc.
Ran engine for first time. Began making a rotating noise imediately. Not rod or valve noise though. While running it for under 3 minutes trying to identify the noise, I heard a loud noise like somethng hitting the oil pan. Shut it down.
Found the oil pump drive gear in pieces in bottom of pan and cam gear trashed. Suspecting the machine shop left debris in the oil galley that caused the pump to lock up mometarilly and cause the failure, I replaced the camshaft & oil pump again, paying close attention to detail. Installed the cam with the upper timing gear only and the oil pump installed, no lifters, and rotated it to check for any alignment issues, binding or noise. Spun freely by hand, felt smooth, no noise. Finished assembly.
Started engine, Same noise. Shut down before it broke the gear again. Please advise!! What has this machine shop done wrong?
Please email me @ swingshiftauto@aol.com
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