Briggs rebuild

[stritle]

I put new rings, valves, etc in the briggs for my Spirit of 76. I was able to get it to turn over with the new starter a couple of times, then cough once. Now I can't get it to turn over.

So, I took it apart again, and with the bottom cover and the head off, I have a dog of a time spinning it over by hand. I have to use a screwdriver in the flywheel, and even then it is hard to do.

Is this normal for a ring job?

Secondly, I found oil on top of the piston when I pulled the head. Is this a sign of something I did wrong?

Thanks.

 

[dmerkle]

Steve,
Were the new parts Briggs and Straton?
It could be one of the following:
The ring cap is too tight. You may have the wrong size rings for the bore.
Next area I would check is the connecting rod if you change it. You could have an undersize rod on a standard size crank.
Did You use an assembly lube when put the motor back together?
Was the crank end play in specs?

I have rebuild 2 Spirit of 76 motors. Rings, piston and connecting rod were replace in both. Both turn over by hand.

My email address is in my profile if you need more help.

 

[kweaver]

hard cranking...
there's a topside and bottomside on rings
there's a correct order of placement
there's oversize rings in a standard bore
there's incorrect end gap needing filed (to tight)
broke rings
no lube
rod cap backwards (?)
rod cap over-torqued

oil on top of piston ...
engine rolled over
all ring gaps lined up
exessive oil left in cylinder for pre-lube

take your pic

 

[stritle]

In other words, I have to tear it down again. I was afraid of that.

Thanks

 

[stritle]

Turns out the rod cap was on too tight. I guess my german torque speck was too tight.