Triumph TR2-TR4A New Cylinder Heads - 4 Cylinder
Brand new cylinder heads and cylinder head assemblies are available in a choice of cast iron or alloy materials. These cylinder heads are all very close, top quality reproductions of the later 'high port' TR4 and TR4A style castings.
Two stages of build are offered:
Cylinder Head - with valve guides and seats for standard valves fitted (but without valves, springs and caps) or
Cylinder Head Assembly - completely finished and assembled with standard valves.
Note that the manufacturer recommends as much new hardware as practicable is used when installing a new head to ensure as good a fit as possible.
Also note that while engines with cast iron heads require the original Triumph recommended anti-freeze mixture, engines with alloy heads will require 100% summer coolant to prevent a sacrificial (electrolytic) corrosion reaction between the alloy and iron engine castings.
All cylinder heads listed are to lead free specification.