ESCORT Mk3/4 1.1, 1.3, 1.4, 87-90 fronts are 240mm x 24mm
ESCORT 1.6i, XR3, XR3i 84-90 fronts are 240mm x 24mm
ESCORT RS TURBO S1 85-86 fronts are 240mm x 24mm
ESCORT RS TURBO S2 86-90 fronts are 260mm x 24mm

XR3i discs will fit with S1 RS TURBO calipers - which those could be