MG: TA, TB, TC, TD and TF (1936-55) ? YA, YB and YT (1947-53) ? MGA (1955-62) ? MGB with SU-HIF4 carburettors: LHD models from August 1971 (Roadster from GHN5-258001, GT from GHD5-258004) RHD models from August 1973 (Roadster from GHN5-328101, GT from GHD5-328801)
Austin Healey: BN1 to BJ8 (1953-68)
Triumph: TR3, TR3A and TR3B (1955-62) plus TR4 to CT21470 (1961-63) ? TR4A from CTC62191 ? Spitfire Mk3 and Mk4 with SU-HS2 carburettors (1967-74) ? Herald 1200 with twin SU-HS1 carburettors to engine no GA190340 (1961-65)
Land Rover: Series IIA and III 2.6 litre Petrol with SU-HD6 carburettor (1967-80)
for SU carburettors - bore: 0.096"
Original float needle valves consisted of a plastic body with brass tip and steel needle.
This improved version with Viton sealing cone and a brass valve guide is more reliable. Viton is very resistant to petrol and forms a particularly good seal because it is elastic.
The Viton valve tip is reliably pressed into its seat by a spring-loaded pin.
