The NTX Automotive Museum is currently in the process of restoring a 300 SL Roadster. 17 years ago this car was parked in a barn because of a blow head gasket. When found piston No.3 was totally locked up inside the cylinder because of the old type coolant used back in the day. When pooling the piston we found out that this was already the 1st oversize and the drilled the cylinders in a cone shape. Now with the 2nd oversize it turns like she is new. The engine was rebuild by Arthur's Mercedes…
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