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I think it's time for a re-bore on the 38 ES 2 motor
The only pistons I can find are 48 on.Nothing for the pre war Singles
I understand the GPM piston just needs the skirt trimmed a little, is this correct.
What are others using?
Thanks
Ian
Yes. You will need to trim…
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How do safely mount a piston…
How do safely mount a piston? The only solid bit surrounds the pin.
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I used a length of bar the…
I used a length of bar the same diameter as the small end, cross drilled at each end as close to the piston as possible. The piston s flat topped so it would clamp directly against this. I found a length of ground bar in my odds and ends so this was perfect.
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Yes. You will need to trim the skirt to miss the flywheels. I set it up on an angle plate on the lathe cross slide and made a tool to mount on the face plate to fly cut the radius on the under side of the piston.