I have a set of X heads (2531894-A and 2531894-E), both with a date code of 0218. These were restored 20 years ago by Richard Clapham and have been in storage since. He said that these were castings he had seen in many years. What was done:
1. Heads inspected before disassembly
2. Disassembled and measured valves installed heights
3. Clean heads by caustic soda heated boiling
4. Measure all valves and seat heights, record and save for assembly
5. Square head on Winona valve guide servicing...
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1. Heads inspected before disassembly
2. Disassembled and measured valves installed heights
3. Clean heads by caustic soda heated boiling
4. Measure all valves and seat heights, record and save for assembly
5. Square head on Winona valve guide servicing...
Read more
