![[]](/sites/bighealey.co.uk/modules/ecommerce/cart/images/cart_empty.png "View your cart items"){kind=spacer}
3000 Top End
ALUMINIUM CYLINDER HEADS - 6 CYLINDER
Having had 12 months development prior to their launch 9 years ago, these brand new cylinder heads are from our own drawings, patterns and castings, and are completely computer machined to our specifications. The development process has seen them, crack tested and inspected at every stage. We have run them on our own dynamometer to remove all faults. Finally, we have sawn them in half to get right inside the casting, ports, oil and water galleries.
During production every head is pressure tested and fitted with precision ground, replaceable, lead-free valve seats of the latest material, where applicable they are complemented by our top quality valves, guides, springs and top caps. These are complete and ready to fit with new rocker and manifold studs. FIA Approved.
VALVES
All our valves are made from one-piece forgings in 214N stainless steel with stellite tips and plasma nitrided stems for increased life. Suitable for both leaded and unleaded fuel. These are made to the lightest design using standard size stems and collets.
COLISBRO-BRONZE VALVE GUIDES
These are essential in all racing engines and engines converted to lead-free fuel. They are specially manufactured for us to the same standards as used by F1.
'Tapered' option now available.
Prices stated are per item.
COMPETITION VALVE SPRING SET
These give increased seat and nose pressure.
ENG525HD - Double springs to suit std & fast road cams
CENG525 - Single springs to suit higher performance cams
BIG BORE MANIFOLD GASKET - 6 CYLINDER
Top quality material with larger port holes.
LIGHTWEIGHT VALVE TOP CAPS
These are manufactured from top quality aircraft aluminium and are hard anodised red or high grade steel and heat-treated.
Prices stated are per item.
VALVE STEM OIL SEALS
These are top hat type oil seals which fit around the top of the valve guide.
These will only fit with our competition single valve springs.
Price stated is per item.
VALVE COLLETS
Due to the non-availability of good quality collets we have had these made to the highest tolerances from EN24T steel and heat-treated.
Also a direct replacement for the standard.
VALVE SPRING SHIMS
We have had these made specifically so that the race engines and badly worn road engines can have all the valve springs shimmed to the correct length. We have two sizes of bore diameter available to suit valve guides with or without circlips.