Any idea what causes ring gaps to line up?

[Blazer406]

Got a friend working on a motor that he assembled and was extra careful to make sure he offset the ring gaps relative to each other. Maybe 1000 miles later he is back in there trying to find the cause for excessive smoke..... and notices the ring gaps (some of them) are nearly perfectly lined up.

Any idea what causes this?

I had hear over-revving would cause ring "flutter" and cound cause them to line up..... but I don't think this motor was over-revved.

 

[turbo nasty]

Rings spin/move and dont stay in place.

Excessive smoke could be also

Rings not broken in correctly
Glazed cyl
Wrong gap
Wrong final finish on Cyl
Broken ring
Improperly installed
Improperly sized to bore
Piston ring lands beat up

 

[87action]

rings lined up

Like he said

 

[hiboom]

rings

I have seen the rings installed upside down and valve guides wore so bad that a engine would go through 1 quart every 50 miles and smoke like a trash fire