Supaloy, designed and manufactured by Super Accessories of Bromley, Kent, in the 1950’s and 1960’s.

A MKI and MKII version was produced. They featured a 6.5:1 compression ratio and a special shape head gasket.

Reference The Austin Seven Clubs’ Association Magazine, publication No. 1989A, pages 14-20. Article by Robin Boyce and Andrew Lowe

The Supaloy Mk 11

Photo by Barry Lovelock

Additional Photographs by Ron Burchett