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C-AJJ4064

CYLINDER HEAD 8 PORT ARDEN BUILT UP PLUS PUSH RODS

The original Special Tuning head 8 port head by Jim Whitehouse is the ULTIMATE Push rod head for the "A"Series but is NOT A STRAIGHT BOLT ON PART.

It is supplied fully assembled with springs/top caps,Evo collets and utilizes the original size 35.6 inlet and 30.5mm exhaust valves and will handle cam lifts up to .500"

Annealed before machining for durability and strength and pressure tested after build before sold.

Also in this kit is a set of correct length (.220"longer) push rods C-AEG583, manifold gasket C-AHT380 plus all the head studs. Block stud kit C-AHT282 is not included but available seperately

Standard S con rods Number 2 and 4 usually need modification for clearance owing to cam lobe configuration. Con rods ready to fit are available as -AEG624.

Special 8 port cams with different cam lobe configurations are required. Special exhaust manifold C-AHT343 is also required.

Combustion chamber is approx 21cc to suit sensible compression ratios on big bore engines and from July 2012 the revamped head uses stepped guides which retain the valve spring platform as per all modern day race heads.

A special set of 8 port hi-lift roller rockers in correct sequence and spacings are also available as C-AHT448 for this new head as valve centres to push rod holes have been moved.

A fully programmable injection management kit is available as C-AJJ4065

A super large 37mm inlet valve head for special uses and large bore engines is available as C-AJJ4064RACE.

Head Gasket GEG300,BK450 or C-AHT189 cometic type must be used

cylinder head nut torque setting is 50ftlbs

Homologated for Cooper S but not 1275GT as it was overlooked by error and only the iron head was homologated for the 1275GT
  • £2,075.04 exc vat
  • £2,490.05 inc vat

 Special order

 
help Recommended usage 1 x C-AJJ4064 to fit one mini.
 
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Fitting instructions / Articles

C-AJJ4064 – 8 PORT CYLINDER HEAD


The combustion chambers are left in a basic shape only with a nominal 16.4cc which allows enough metal for those with the latest advanced ideas of shape to apply them and create the correct compression ratios for the desired use.

Valve and seat material specification allows use of unleaded fuel. Thoroughly clean the cylinder head before final assembly. Check that the small circlip is in the correct position in the valve guide at a point where the guide protrudes through the cylinder head beneath the valve seat. Place the valve spring seat over...