14mm 12/4 crossflow cylinder head. Pressure tested and new valve guides have been installed with the valve seats re- cut 1" 9/16 inlet and 1" 7/16 exhaust.The cylinder head is also supplied Riley Register 1" 9/16 inlet and 1" 7/16 exhaust valves.
for sale a set of Ronis keys with his barrel for a variety of Citroën cars , in original and used condition. Shipping worldwide at cost and PayPal accepted.