MINI66 wrote:
G'day gtogreen1969
serial number on the box is 22/3557
I just had a closer look at the head and it might not be a big valve after all.
There is no number stamped behind the thermostat that I can see . I took the rocker cover off and it says 12g940 but both numbers on each end are cut off by the pushrod holes so it more reads like 2g94. (must be an early casting thing as on the others that i have had you can clearly see 12g940).
It has 11 studs and markings of SM and under that what looks like I0F0 and to the right hand side A. It has double vale springs.
Appreciate the help
Cheers
Rick
22/xxxx is a gearbox serial number from a Clubman. It coincides with the YDO body number M2/22.
The 12G940 head was used on many engines and the casting had slight changes over the years. The 11 stud S head was stamped 12G1805 with 1.219" exhaust valves. 9 stud non S heads had 1.156" exhaust valves. Many people like to use non s heads to modify.