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They can be used as intake/exhaust springsin almost any VW Type 1 head casting
1963-66 &Porsche 912
Part #VW103T4S71P
you will need to open both the Heads and Case to install them
5mm Porsche 356/912 JE High Compression pistons with Biralcylinders
101.60mm JE Forged Piston & Liner Kit AKA 4" opt-type-4-perf-e They can be used asThis is a new set of 101. 6 JE Forged Pistons and Cylinders, The Biggest of the Big Bores. JE Forgings are made from 2618 Aluminum with a zero offset. This kit requires Special Case and Heads that will except the wider stud pattern. The Cylinders are longer and was Designed to be "cut to fit" for long stroke or long rod engines. They are also per cut for 6 stud heads. Bore: 101. 6mm 4 Inch Stroke: B stroke pistons Cylinders: Long 6 Stud Cast Iron
