1.c Norton SOHC Head and Barrel

These high quality valve guides are made to the original dimensions of SOHC Norton valve guides - this being the inlet which are bored to take the standard 11/32" diameter inlet valve.  

These high quality Oversize inlet valve guides are as per our standard SOHC valve guides (Item 0301), except these guides have an external diameter that fits into the cylinder head with an additional 1 Thou (0.001") diameter - which can help if you think you have a cylinder head which has previously had a guide move in the head, and therefore requires an additional interference fit.  See detail listing for more detail. 

Price is Each

These high quality valve guides are made to the original dimensions of SOHC Norton exhaust valve guides - with the exhaust guide on SOHC engines a bigger outer diameter, bored to take a 3/8" exhaust valve (the inlet guide is 11/32". The guide includes the important oilway from the cambox feed, which has a small countersunk face to allow for a better tolerence when fitting them.  Price is each.

This is an exact reproduction of the valve guide bottom collar that held hairpin valve springs on the Norton SOHC International model, as well as original SOHC Manx heads.  These are based on an original International valve collar - even including the patent number, but we have them cast in stainlesss steel so they do not rust, and are CNC machined.  See detail listing for more information.  Price is Each.   Update May 2023:  New batch now in stock

Hairpin valve spring manufactured to exactly the same specification and shape as the orignal type fitted to Norton International Model 30\40 engines. Price is for a set of 4 springs - which is required for one engine

Hairpin valve spring manufactured to exactly the same specification and shape as the orignal type fitted to Norton SOHC Manx Model 30M\40M engines. Price is for a set of 4 which is required for one engine

These are the brass union assemblies that screw into the front bevel gear chamber of the SOHC cambox and feed oil to the valve guides, via the small bore copper pipes. Similarly, they were also fitted to many pre-1938 OHV rockerbox's. This assembly is for an inlet valve assembly - as the union has a smaller oil feed hole than the exhaust assembly.  Supplied as complete assembly, where pipe can be modelled to fit your engine.  See detail listing for more information.  Price is per assembly.

These are the brass union assemblies that screw into the front bevel gear chamber of the SOHC cambox and feed oil to the valve guides, via the small bore copper pipes. Similarly, they were also fitted to many pre-1938 OHV rockerbox's. This assembly is for an Exhaust valve assembly - as the union has a larger oil feed hole than the inlet guide assembly.  Supplied as complete assembly, where pipe can be modelled to fit your engine.  See detail listing for more information.  Price is per assembly.

Hardened Valve Cap to fit 3/8" Stem Diameter valves.  These have been CNC machined using original period 'Terry' valve caps as the pattern.  These are available in two thicknesses - state thickness when ordering.  See detail listing for more information. Price is per valve cap 

Hardened Valve Cap to fit 11/32" Stem Diameter valves.  These have been CNC machined using original period 'Terry' valve caps as the pattern.  These are available in two thicknesses - state thickness when ordering.  See detail listing for more information. Price is per valve cap