Posted by skycarp on November 04, 2010 at 22:23:43 from (208.93.180.75):
Hi Guys,
I am rebuilding a C-123 engine (Farmall Super C). I have a complete engine rebuild kit with sleeves, pistons, rings etc. which came with an 1/8 inch overbore. I am now at the reassembly stage and I think I really messed up on the rings. I read the specification pages wrong.
The end gap on the top ring SHOULD be .010 - .020 inch. I read the specifications for ring to grove clearance, which is .035 - .055, by mistake and used that specification for the ring end gap. I took the end gap on the all four top compression rings to .035 inch before I discovered my error. The second and third compression rings are at .020, as specified.
1. Will I see a noticeable loss of compression on this new engine?
2. If so, will it be enough to effect the power of this engine?
3. Will the compression fall off even more as the engine breaks in?
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