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Front caliper rebuild 1970 Series 2 E-Type

mldwyer

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So, today, I disassembled my front brake calipers (One of the casting # E64326816 left side.) 1970 E-Type Series 2. The new pistons in the rebuild kit from a major supplier matches the part # from several other suppliers. #64325434 SS the small outboard pistons. They measure 1.500 inch. The large inboard piston measures 2.1225 inch.
The issue is: Small bore in caliper is 1.595 - 1.600; and large bore is 2.252 inch. The seals in the kit match the small pistons, not my calipers. I am assuming, someone before me installed the calipers with larger pistons. Could they be from a Series 3? Maybe an XJ6?
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