I'm in the process of starting my first engine & gearbox build for my mini and would like some advice and a second opinion on the spec i've decided on.
It's going into a 1969 early mk3 mini, so i'm doing a period build with parts that you could of got around the time (with the expection of internal parts) as I want it to look right. The whole engine and gearbox and all parts will be rebuilt/refurbished.
The Mini is manily used on A & B roads and country lanes, so i'm mostly doing 50+ mph and cruising along, so I don't want it revving too high. I won't be revving the engine much over 6k rpm, I'm after a nice torquey engine rather than a high revving screamer but something that'll still be fun on the country lanes. I'm also after something that'll pull resonably well up the hills around here too.
The majority of the parts I already have and there's a few parts that I have a choice on and/or i'm not sure which to go for, so i'll list both with question marks.
The spec I have though out is as follows:
1275 11-stud pre A+ block with A+ crank and con rods
Stage 3 spec 12G940 11-stud cylinder head
Pressed steel rockers (big bore wide pad version)
HS6 1 3/4” SU on Howley inlet manifold OR twin HS4 SU's on minispares inlet manifold?
Minispares EVO1 camshaft?
Rebuilt Lucas 45d dizzy with advance curve altered & electronic igntion kit
RC40 single box exhaust
Cooper freeflow manifold or LCB?
22G1128 4 synchro remote gearbox
S/GT close ratio 1st motion shaft & laygear OR early A+ type 1st motion shaft & laygear with pre A+ tooth profile along with 18mm nose bearing mainshaft?
3.21 or 3.44 diff?
Cross pin diff or rebuild standard diff with competition moly diff pin?