jill200sx wrote:
ok Im sure this is a really dumb question but what is an A series or A+ series engine.. whats the difference and what else is there?
All
Minis built in Oz had the A series.
The A+ came out in UK ~1980 I think, it was an updated version of the A series, with various detail `improvements'.
Many (most) A+ parts are interchangeable with A series, ie. can be fitted to earlier motors.
The very last of our 1275 Mokes got an A+.
We have one (now 1293) in Barney- here's a pic of the front of block. Note the different dizzy clamp, strengthening fins on block, alternator bracket moved towards fan..

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
