I’m getting everything together to perform the 3G 130A alternator swap on my Fairlane (shouldn’t be any different that on a Mustang) I went to put my original single groove pulley on the 3G alternator and the first thing was the pulley bottomed out against the aluminum housing of the alternator and if I would have tightened the nut it probably would not have even moved. I took a .030” thick shim (washer) and put that under the pulley and it kept it off the housing and spun freely. Putting the nut on the 3G shaft with pulley installed only showed about 4-5 exposed threads. I put the nut on and torqued it but the shaft end is still about 2-3 threads under the nut? I’m sure others have run across this, as I don’t have any special 3G alternator or pulley. 3G is from a Taurus.
I’m also noticing that the 3G is about one half inch wider (front to back) that my original alternator. The back of the alternator is against the head. My engine is a 390 and it should not matter if it is Fairlane or Mustang as the mounting on a 390 is about the same and using the same parts. Are there any tricks that I’m missing to fit the alternator in the same gap that he original alternator resided in?
Thanks,
Doug
I’m also noticing that the 3G is about one half inch wider (front to back) that my original alternator. The back of the alternator is against the head. My engine is a 390 and it should not matter if it is Fairlane or Mustang as the mounting on a 390 is about the same and using the same parts. Are there any tricks that I’m missing to fit the alternator in the same gap that he original alternator resided in?
Thanks,
Doug