Good morning GM, a big thank you for the information you gave me on the 1941 Ford coil when it gets hot. Do you know the ohms amount from the input to pig-tail, is it low or high when checking with volt meter?.
Randall[/QUOT
I don't have the ohm info here but it is a waste of time checking old Ford coils because like I said it is rare to find a good one, used or NOS that works when hot. The coil winding leakage don't show when the coil is cold. Years ago Skip checked stock coils and they all looked good cold. To test a coil it takes 20 or 25 minutes just to find out they all fail when hot, some need to be a little hotter than others before failing. The only ones he checks now are ones that people CLAIM he rebuilt failed. The failures are so rare and condenser failures so frequent he requires they send a check for $10.00 return shipping in the USA. He spends the 20 or so minutes testing the coil and very seldom finds a bad one. If it would be bad he repairs that coil free and sends the $10.00 check back, if good he uses the check for the return postage. Someone recently returned one twice with a resume of his expertise. Skip tested the coil the second time plus took an hour to put it on a 39 and test drive it in over 90 degree temperature and it never skipped a beat. The expert said he tried 3 different condensers, Skip told him he had three bad ones. After getting it back he put a new one on and it ran perfect. He wrote back there must have been some bad connection before. G.M.