What is a Stage 4 cylinder head?
The Stage 4 cylinder head is a Fast Road/ Rally specification with. – 35mm inlet valves. – 30mm exhaust valves. – extra strong double springs. – steel valve guides.
What is a Stage 3 head?
A stage 3 (Mini Road Sport) modified Mini cylinder head for 1275cc A series engines, manufactured by the experts at Mini Sport. The Stage 3 cylinder head is a Fast Road/ Rally specification with. – 37mm inlet valves. – 29mm exhaust valves. – extra strong double springs.
What Is a Stage 2 head?
Stage 2 heads feature extensive port work on the intake and exhaust. We utilize stock valves and springs which are inspected and tested to meet factory specifications. The heads get surfaced to insure straightness.
What engine is in my classic Mini?
Mini Mania Engine Shop. Trust the experts….Engine ID for Standard Mini Engines.
| engine # prefix | engine type |
|---|---|
| 9F/Sa/H 101 – 19200 9F/Sa/H 20411 – 26376 | 997cc Cooper |
| 9FA/Sa/H (or L) 9FD/Sa/H (or L) except 33661 – 33948 9FD/Xe/H (or L) 99H/377C (or 378C)/H (or L) | 998cc Cooper |
| 9F/Sa/X 9FD/Sa/X 9FE/Sa/X | 970 Cooper S |
What’s the difference between stage 1 and 2 Cam?
Most Stage 1 type modifications are typically in the +10-15% power increase over stock. Stage 2: this is typically referred to an engine with a performance cam upgrade as well as the other components within a Stage 1 combination. A typical Stage 2 has generally +20-25% more HP than stock.
What is an A+ Mini engine?
The A+ engine came on to the mini scene in 1983. It has a thicker block to box flange and is generally more robust than the standard A series. Operationally it’s pretty much identical and is the same capacity. Heads/boxes are swappable.
Are all Mini gearboxes the same?
In fact the early type is the same as those first used at the inception of the four-syncro gearbox!! It’s also the exact same set-up used in all the A+ Minis and the A+-powered Allegro….
| Final Drive Ratio | Crown wheel | Pinion |
|---|---|---|
| 3.10 | 59 | 19 |
| 2.95 | 59 | 20 |
| 2.76 | 58 | 21 |
How many gears does a classic Mini have?
2nd Series Mini (1967-1970) The revamped Mini was launched at the 1967 British Motor Show, featuring a redesigned front grille and a larger rear window. In 1968, the manual four-speed gear-box now had synchromesh on all four forward ratios.