17-01-2020, 02:43 AM
The 1928 Chummy and 1929 Standard Sports both have 1 1/8" SU's from a post war Morris with weighted pistons (no spring) - mounted on 1936 manifolds with adapter plates. Sorry I don't have needle details but both work well (Wednesday I had the Chummy cruising at 48 mph in 32 degree temperature, but unfortunately couldn't turn the eater off ! 
) .
The Sports has an electric SU type pump which works well, the Chummy has gravity feed needing a full tank (down to 1 1/2 gallons) for reliable fuel feed.
) .The Sports has an electric SU type pump which works well, the Chummy has gravity feed needing a full tank (down to 1 1/2 gallons) for reliable fuel feed.