Trident Manufacturing  

Cylinder Head Skimming & OverhaUl

Upon receipt of any cylinder heads they are generally checked for straightness, the overall condition of the head is assessed and if required general recommendations of work needed are made.

This may range from simple surfacing of the gasket face or full overhaul to replacing valve guides, valves and seats.

Prior to any work being carried out all parts go directly into our Metalas Parts Washer to remove all oil and grease.


Metalas Parts Washer

Cylinder head re surfacing

If distortion has taken place, within an acceptable limit the gasket face can be re machined on our Berco STC 361; For aluminium heads we use a polycrystalline diamond tool bit, for cast iron a cubit boron nitrite bit is used to ensure the correct surface finish, as stipulated by gasket manufacturers.
Berco STC 361
We also have the facility to re surface aluminium cylinder heads and cast iron heads with steel combustion chambers on our Zanrosso 1500 Y.
Zanrosso 1500 Y

Cylinder head valve seat machine

Our Sunnen VGS 20 valve seat cutting machine's cutting head floats on air to allow perfect alignment between the cutter and the valve guide. When this is correct the cutter head is locked hydraulically in position prior to any cutting operation.
Sunnen VGS 20

valve Grinding machine

When overhauling a cylinder head we grind valves using our Sunnen VR 6500 valve grinder.
Sunnen VR 6500