Hello, everyone
I recently purchased a 1958 A-10 golden flash. It has been sitting since 1967, and has 6700 original miles. The engine was seized when I bought it, and I assumed it was the pistons. Unfortunately it was not. rust had invaded the bottom end and was the source of the seizure. Luckily the engine had never been run in this condition. The crank cleaned up nicely at .010 under.
I am very confused about the connecting rod bolt torque specs. The engine number is DA10-310 and according to my haynes manual, torque should be 22 ft/lbs. Here is the confusing part. My engine has the castellated nuts and split pins, and I've been told this is incorrect for a 58. My 58 parts book shows the castellated nuts as well. I cannot believe that this engine has ever been apart. When I disassembled the engine the nuts were very tight, they had to have more than 8.5 ft/lbs on them. What is the correct torque 8.5 ft/lbs or 22 ft/lbs? I dare not guess at something so important. I ordered new bolts and nuts thinking this would resolve the issue, however upon receipt they were of terrible quality. I got three different bolts (sligt differences in length and head thickness) and two of the nuts have extremely loose fitting threads. I will not be using these. Also on my conrods there is a 1/4" recess where the castellated nut can fit into the larger locknuts will not fit into these recesses. Any help would be most welcome, Barry
