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Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec

Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec

Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec

Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec

Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec

Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec

Classic Mini Aluminum Cylinder Head Assembled | Stage 1 Spec
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Specially Priced Item
Only 1 Left in Stock!
Internet Price $1994.95
Only 1 Left in Stock!
Internet Price $1994.95
Alternate Products
Classic Austin Mini Aluminum Alloy Cylinder Head- 5 Port
$1494.95 Classic Austin Mini Aluminum Alloy Cylinder Head- 5 Port

Mini Mania is pleased to offer our Austin Mini Aluminum Alloy -Stage 1 - Cylinder Head modification, High Performance Upgrade.

 

We've  done some polishing to the casting seams, to improve flow, and have increased the Intake Valves to 1.4".

 

Stage 1 Cylinder Head, (assembled), Includes:

  • 5 Port Aluminum Alloy Head-       C-AHT345
  • 4-1.22" Exhaust Valves -                  C-AEG107
  • 4- 1.4" Intake Valves-                             AEG592
  • 4- Valve Stem Seals-                          ADU4905
  • 8-Keeper Pairs, 1 Groove -                   88G459
  • High Performance Dual Valve Spring C-AEA526
  • 8 Dual Spring Locating Collars-      AEA403
  • 3 STAINLESS Thermostat Studs-         THS1
  • 6  Manifold Studs-                              C-53K487
  • Retainer- Set,  (Alloy Top Caps)-  903-0000
  • Uses -Spark plug-                                   RA8HC
 

HIGHLIGHTS OF Mini Mania’s  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 modified Aluminum Cylinder Head to a 1275cc+.040 Race 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. The Motor, with the Stock Head would not pull beyond 5500 RPM and 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.
Also Purchased with: C-AHT345-STAGE1
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Related Technical Articles:
Some Advantages to Aluminum Heads for BMC engines
Created: March 23, 2017
Any aluminum head will have advantages in lighter weight and better cooling due to aluminum being able to shed heat better than iron.
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