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11-Stud, large valve alloy race ported and flowed head with race quality valves with special beryllium valve seats and special colisbro guides similar to those used on 8 port. Chambers are 21.3~21.5cc's.

Casting shape and profile is based on the 12G1805 "S" 940 casting design.

Machined for C-AEA526 height springs with our locating shims underneath.

With  1.457" and 1.22" exhaust valves and titanium top caps plus 88G459EVO collets for ultimate strength.

Advantages are weight and better cooling on a brand new head as old castings are becoming poor for reliabillty when modifying.

Where the inlet ports are opened up tubes are put in to give full flow benefit.
Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally

Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally

Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally

Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally

Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally

Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally

Aluminum Alloy 5-port Unleaded Cylinder Head, Road & Rally
Part No: C-AHT347RACE
$2607.95
Qty:
Specially Priced. Discounts Do Not Apply.
Fits the following:
Classic Mini
Sprite & MG Midget
Morris Minor
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$2281.95 Aluminum 5-port Unleaded Cylinder Head, Standard
11-Stud, large valve alloy race ported and flowed head with race quality valves with special beryllium valve seats and special colisbro guides similar to those used on 8 port. Chambers are 21.3~21.5cc's.

Casting shape and profile is based on the 12G1805 "S" 940 casting design.

Machined for C-AEA526 height springs with our locating shims underneath.

With  1.457" and 1.22" exhaust valves and titanium top caps plus 88G459EVO collets for ultimate strength.

Advantages are weight and better cooling on a brand new head as old castings are becoming poor for reliabillty when modifying.

Where the inlet ports are opened up tubes are put in to give full flow benefit.
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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.
Why It's Important To Identify Your Classic Mini Cylinder Heads
Created: January 30, 2000
Everybody has their own opinion on this subject. The most experienced people will tell you that the best way to maintain your engine performance is to accept the fact that valve jobs need to be done 2 or 3 times more often than rings and bearings! And this data base was concluded when leaded gas was the norm! Now that unleaded is all you can get, valve jobs are needed even more often! The purpose of a valve job is two fold; first the valve seats. The impurities in the air and gas often get trapped between the valve and the seat in the head; under worst conditions stopping the valve from closing, but more commonly being smashed enough to allow just a little seepage of hot gases.