C engine problem

OhioEd · Jul 11, 2012

A freind has a C that was froze up so he thought the problem was the main barings. He replaced them and the crank turned freely, but when he put the pistons in the crank will not turn. The pistons slide in the cylinders easily enough, so thats not the problem. Any ideas as to what his problem is or what he did wrong?

old · Jul 11, 2012

Well one thing he may have done was install the rods 180 out of what they should be. If you do install them 180 out that will cause a lock up problem due to hitting the block. Or the bearings may need to be shimmed so the rod caps are not to tight

rdrash · Jul 11, 2012

Id say Old is right, the rod caps are to tight. Did he use the brass shims when he installed the rod caps?

Dick L · Jul 11, 2012

Most likely the rods were installed all the same direction. The rod caps are off set so if they are all the same way you are only half right. The picture shows the rear of the engine and the way the offset is to be installed. A good way to check is to look as the rod starts to seat and look for it to be in the center of the journal. If it is not centered it is in back wards.

C engine problem

OhioEd

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old

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rdrash

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Dick L

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