Cylinderhead Valve Guide Replacement


For every inlet and exhaust valve there will be a valve guide fitted into the cylinder head.  This valve guide serves to positively locate the valve to the valve seat so it makes proper contact. Guides also serve to conduct heat away from the exhaust valve to the cylinder head.

If an engine suffers a catastrophic failure the valve guides can crack due to the valves bending.  If this is the case we are able to remove the damaged valve guides and replace them with new guides. If for any reason new valve guides are not available we are able to manufacture guides to suit.

Over time a valve guide can become worn, which can lead to smoking and oil consumption problems. Rather than replacing valve guides we are able to re-sleeve them.  What this entails is for us to fit a phosphor bronze guide liner directly into the valve guide. The benefits for re-sleeving valve guides rather than replacing are numerous, but they include durability, as the phosphor bronze guide liner is a harder wearing material. The guides have been shown to outperform cast iron guides in durability, heat conductivity and friction reduction.

We have a huge range of guides in stock , We can also offer these in OEM steel , Bronze , Copper beryllium, Colsibro. Each Guide has a different use and we can help with the choices for your Cylinder Head. 

We also custom manufacture valve guides with our Haas ST10 CNC lathe , please ask us for custom guide info.

All guides fitted are Diamond Honed for perfect finish 

Please Call the Machine Shop for Valve guide fitting and prices 01225 791182 or email

valve guide replacement