Mini Mania is pleased to offer our Austin Mini Aluminum Alloy Cylinder Head Performance Upgrade.

Head Includes:

• Bronze Valve Guides.
• Hardened Valve Seats.
• Valve Spring Seats.

ALL INSTALLED

HIGHLIGHTS OF OUR  ALUMINUM ALLOY HEADS:

There are several advantages inherent to an Aluminum Cylinder Head, including a great deal of weight savings and considerably improved cooling.

• Improved cooling means we now run higher compression ratios without detonation caused by localized hot spots.
• Flow has been considerably improved by reshaping the Combustion Chamber. This was made possible by relocating the spark plug and upgrading to 12mm plugs. Early tests indicate that this head right out of the box flows comparably to a Longman GT6.
• Cylinder Heads are supplied with Bronze Valve Guides and Hardened Valve Seats.
• The Head is ready to fit 1.15" exhaust and 1.31" intake valves and has  23cc chambers with a thick deck to allow for plenty of skimming.

HOW DO THEY PERFORM?

How about 124 HP with SU Carburettors!

We achieved that figure, on a  Mincomp Engine Dyno, when bolting this slightly modified Aluminum Cylinder Head to a 1275cc+.040 race engine.

We've increased the intake valves to 1.4" and done some very slight polishing to the casting seams. While you won't generate these numbers on a street motor, you can see that the potential is there to get maximum possible performance from any engine.

RPM HP#1 HP#2
3000 47.80 47.60
3500 56.12 56.97
4000 64.22 67.23
4500 70.31 73.30
5000 73.50 76.30
5500 72.93 79.25
6000 -------- 80.27

As you can see, the aluminum head shows a measurable power increase above 3500 RPM, and, whereas the motor would not pull beyond 5500 RPM with the stock head, with the aluminum head it pulled past 6000 RPM! Flow bench tests show the alloy head outperforms the standard at all lifts.

This head responds well to mild porting above the valves.

Uses spark plug RA8HC. Also fits the Sprite and MG Midget

Additional Recommended  parts to make your own Head Assembly:

• Intake Valves-                AEG592
• Exhaust Valves-        C-AEG107

• Valve Spring Set-      C-AEA526
• Valve Spring Caps-  C-AEA530
• Keepers-                           88G459
• Locating Collar-           AEA403
• Manifold Studs-        C-53K487
• Heater Tap Stud-     C-53K402
• Recommended Rocker assembly- C-AHT446
• Recommended Spark plug is the Champion RA8HC

Here’s the Assembled Cylinder Head complete with  Valves, Springs and Studs-MMKT0600.