This is topic Assembling engine - won't turn over in forum Tech Talk at Northern California Ford Owners  .


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Posted by z pyro (Member # 3745) on :
 
I just got my block, rods, pistons and crank back from the shop today, got the crank turned 10 over and the bores 30 over. I put the first 4 pistons in, crank rotated just fine. I put the 5th one in (first on the driver side), and the crank gets really really hard to turn. Now that I have 7 in, it won't turn at all. Is it supposed to be this difficult to turn over? I have a breaker bar on the crank bolt, and it still won't budge and I'm afraid the bolt will break or something.
 
Posted by MustangNate (Member # 4559) on :
 
I'm going to have to say no, it should not be that hard. Now keep in mind I'm not an engine builder or anything, but I have never encountered a motor where I couldn't even turn it with a breaker bar.
 
Posted by turbo50 (Member # 6700) on :
 
Disassemble it back to the piston you put in that made it difficult to turn over. If it takes more than about 16lbs/ft to turn over with fresh rings in the shortblock then something is definitely wrong.

Verify you have all the same bearing sizes. Did you have the rods checked at the machine shop?
 
Posted by threethirty1 (Member # 7814) on :
 
make sure your main caps are all the right way!Did u get a line hone?
 
Posted by street_illegal_stang (Member # 1554) on :
 
did you gap the rings?rod caps mixed up [Confused]
 
Posted by z pyro (Member # 3745) on :
 
turns out I put the snaps rings that were included with the pistons on, and that was causing the problem. I removed them and it rotates now
 
Posted by kingmoochr (Member # 5834) on :
 
what? that makes no sense. did you have the rods installed backwards on the other side? or both? ford tangs point towards the cam, not towards the pan rail.

edit: unless you have pressed on pins, then it makes sense

[ June 01, 2008, 02:17 PM: Message edited by: kingmoochr ]
 




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