Its Me Again! Water Out Of The Over Flow Pipe

**MINI 1000cc/1275cc:**
**1990/1982:**
** ive just put an(1982) 1275cc metro engine in my mini 1000(1990), i had to muck about a bit with the water pipes, i drilled three little holes in the thermostate because the 1275cc engine never had a bypass hose fitted.

i left it running for about 30-40mins, the temp was slightly over the middle bar on the gauge, when i switched it off WATER CAME OUT OF THE OVER FLOW PIPE ON THE RAD, Im just thinking the 1275cc(1982)engine i put in used to have a expansion tank…is this normal to vent water if it gets hot???..ANY IDEAS??
**

**cheers for all your help whilst im doing this mini project

mike**

not sure but my guess is you might of just overfilled it so when it heated a bit the expanded water overflowed, something to keep an eye on, just wait to see if one of tmf guru’s has a response