30-05-2024, 07:47 AM
(This post was last modified: 30-05-2024, 07:49 AM by John Cornforth.)
Hi
From your description it appears that one of your rods has the little end white metal bored in error at a slight angle (about a quarter of a degree if my maths is correct).
The resulting protrusion one side of the piston top face is probably not a problem if you have sufficient clearance to the head at TDC. However if the piston is canted in the bore you are likely to have reduced clearance or even contact with the cylinder side walls, near the top of the piston at one side and near the bottom at the other.
If it were me I would be unhappy to run in this condition. Something to take up with the rod metaller.
During a recent engine rebuild I discovered one rod had been metalled and bored with 10 thou greater distance between big and little end compared to the other three. This work was done by a well known remetaller based in London. Fortunately this error was small enough to be accommodated, but it does demonstrate that mistakes can happen.
From your description it appears that one of your rods has the little end white metal bored in error at a slight angle (about a quarter of a degree if my maths is correct).
The resulting protrusion one side of the piston top face is probably not a problem if you have sufficient clearance to the head at TDC. However if the piston is canted in the bore you are likely to have reduced clearance or even contact with the cylinder side walls, near the top of the piston at one side and near the bottom at the other.
If it were me I would be unhappy to run in this condition. Something to take up with the rod metaller.
During a recent engine rebuild I discovered one rod had been metalled and bored with 10 thou greater distance between big and little end compared to the other three. This work was done by a well known remetaller based in London. Fortunately this error was small enough to be accommodated, but it does demonstrate that mistakes can happen.