Piston 1275 70.62Mm+0.40

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Piston 1275 70.62Mm+0.40

Low drag 1275 piston standard size 2.780 plus 40 thou oversize(Rings included).

This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990.Engine then becomes 1310cc

Current pistons differ from the 60s originals and now have a “low drag” slipper skirt design and a shorter lighter 20.6mm wrist pin. Wrist pin height is 1.5276″ to crown with a top dish of 8cc.

Performance is enhanced by the use of 3mm oil rings and the smaller drain slot behind this ring decreases the risk of breakage and 2 of 1.5 mm compression rings. Crown depth to first ring is about 10mm.

Rings are R41570-40.

AE Hepolite is now owned by Federal Mogul and trademarked “Nural”

R1,288.85 excl VAT

3 in stock (can be backordered)

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Description

Low drag 1275 piston standard size 2.780 plus 40 thou oversize(Rings included).

This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990.Engine then becomes 1310cc

Current pistons differ from the 60s originals and now have a “low drag” slipper skirt design and a shorter lighter 20.6mm wrist pin. Wrist pin height is 1.5276″ to crown with a top dish of 8cc.

Performance is enhanced by the use of 3mm oil rings and the smaller drain slot behind this ring decreases the risk of breakage and 2 of 1.5 mm compression rings. Crown depth to first ring is about 10mm.

Rings are R41570-40.

AE Hepolite is now owned by Federal Mogul and trademarked “Nural”

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