The Ford Barn

uncle buck · 07-04-2016, 10:36 PM

I just installed a rebuilt 1936 21stud flathead in my 32 pickup. I have 2 starters and while they both spin freely on the shop floor, when bolted up tp the block they both lock up. One was a supposed to be rebuilt unit that came with the rebuilt engine I installed and the other I took off another engine I had. If I finger tighten 2 nuts on the end of the long mounting bolts they both spin over fine with a battery on the shop floor. If I tighten them they lock up the armature. What am I missing here that is causing this?

07-04-2016, 10:36 PM	#1
uncle buck Senior Member Join Date: May 2010 Location: Snohomish,WA Posts: 1,106	Flathead Starter I just installed a rebuilt 1936 21stud flathead in my 32 pickup. I have 2 starters and while they both spin freely on the shop floor, when bolted up tp the block they both lock up. One was a supposed to be rebuilt unit that came with the rebuilt engine I installed and the other I took off another engine I had. If I finger tighten 2 nuts on the end of the long mounting bolts they both spin over fine with a battery on the shop floor. If I tighten them they lock up the armature. What am I missing here that is causing this?