1.d Norton SOHC Cambox

- High quality Stainless Steel cambox through bolts. Screw into Sleeve Nuts - Fits all SOHC models.  This is the longer front cambox bolt that fits through the main cambox casting. Price is Each

- High quality Stainless Steel cambox through bolts. Screw into Sleeve Nuts - Fits all SOHC models.  This listing is for the shorter rear cambox bolt.  Price is Each.

- Set of 4 cambox bolts, both long and short, CNC machined in high quality Stainless Steel.  These have the correct deep Norton head hex head and top curved profile.  This listing for a set of 4 bolts

- 3 piece tappet adjuster set, including tappet pad, outer adjuster and full width locknut - Fits all SOHC rocker arms. - A very popular item, as these are one of the main consumables of this engine. Price is each 3-part assembly. Nov 24: Now Back in Stock!

- Spare top nut for the 3 piece tappet adjuster set (see our Item 0060). These special 'reduced hex'/deep locknuts are fitted to the top of the 3 Part rocker adjuster - but the locknut can sometimes come loose and drop off - so always good to carry a couple spare.  Price is Each 

SOHC Cambox Rocker Rubber Pad Set: Cut/planed from hard wearing oil resistent rubber (Nitrile), to the same width and thickness as originals, Pack of 4.  See detail listing for more information on fitting

This is the distincive magnesium cambox cover fitted to racing SOHC camobox's, which allow for the central oil feed to the camshaft. Manufactured in magnesium alloy as were the originals.  See detail lisitng for background to the lubrication variations for different cambox types

- High quality traditional paper gasket for all SOHC Cambox bevel covers, both Manx and International

Paper gasket to fit all SOHC cambox back plate/cambox. This gasket is made specially for us and is virtually identical to the original Norton rear cambox washer listed in pre-war Spare Parts catalog.

- SOHC Camshaft to fit all standard Model 30/40/International and CS1/CJ camshafts - This camshaft is for the standard (side oil feed) cambox type bikes.  Out of Stock - But looking to manufacture new batch Jan 2025 (email for availability)

- SOHC Camshaft to fit all central oil feed racing camshaft engines - This camshaft has provision for a central oil feed, as used on racing and competitionengines. Can also be used on standard side feed engines if required

- This nut fits on the end of the camshaft after fitting cams and roller back bearing - This nut should be tightened to 55lb sq inch, therefore it is extremely difficult to remove. Sometimes it is actually less destructive to destroy this nut when removing it from the camshaft. Back In Stock Dec 09 - And now CNC machined from solid high tensile EN8 round bar (as high tensile imperial hexagon bar is getting very difficult to obtain)

This listing is for a matched pair of Inlet and Exhaust cam to fit the 500cc SOHC (M30) International engine - with the same profile as original 500cc M30/Longstroke Manx Profile this being the profile referred to as 115.87 (inlet) and 115.88 (exhaust) profile.  These cams are manufactured for us by a long established UK manufacturer to the original Norton (verniered) design.  Each set comes with a useful fitting sheet.  Price is per Pair.  Back in Stock Feb 2025 

This listing is for a matched pair of Inlet and Exhaust cam to fit the 500cc International SOHC engine - with the profile of the original 500cc Internationl 62.12 (Inlet) and 62.13 (exhaust) cam profile - which was the type most commonly fitted to road going 500cc Internationals from the mid 1930's to mid 1950's. These cams are manufactured for us by a long established UK manufacturer to the original Norton (verniered) design.  Each set comes with a useful fitting sheet. Price is per Pair.  Back in Stock Feb 2025

This listing is for a matched pair of Inlet and Exhaust cam to fit the 350cc International SOHC engine - with the prothe of one of the most common profiles fitted to both Model 40 350cc International and 40M 350cc Racing Internationl - 64.66 (Inlet) and 63.89 (exhaust) cam profile. These cams are manufactured for us by a long established UK manufacturer to the original Norton (verniered) design.  Each set comes with a useful fitting sheet. Price is per pair.  Back in stock - Feb 2025

This listing is for a single Exhaust cam to fit the 500cc SOHC (M30) International engine - with the same profile as original 500cc M30/Longstroke Manx Profile this being 115.88 profile.  This cam is the same profile as those sold as a pair in Item 0051 but this listing is for a single exhaust cam only. These cams are manufactured for us by a long established UK manufacturer to the original Norton (verniered) design.  Each set comes with a useful fitting sheet.  Price is per Pair.  Back in Stock Feb 2025 

- This nut fits on the bevel end of the camshaft, and is lipped, to hold the bevel pin, as per the original Norton design - CNC machined in high tensile steel.  Price is each.

- Peg used to retain large camshaft bevel gear to camshaft - If your existing pin has any wear on it at all then it should be replaced, or false valve timings will be otained.

This is the distinctive slotted spacer ring that fits over the camshaft in the tunnel area between the front (bevel gear) chamber and the rear (cam) chamber on SOHC Cambox's.  For the M30 type central oil feed cambox's it is just a spacer ring, but on standard Inter camboxs it performs the important function of feeding oil to the cam lobe area.  See listing for more detail.  Price is Each

Complete cheesehead screw set for SOHC engine, in stainless steel with red fibre washers - comprising : 18 screws in total - 4 cambox front bevel screws, 6 rear cambox screws, 7 timing case screws, 1 crankcase screw and high quality fibre washer set. Original Norton head pattern - see listing for details.  New Batch Due Feb 2025 (but please note - I have not calculated new cost yet.  . . but can be ordered/reserved now if required)

- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these camshaft bevel shims fit between the camshaft and the front cambox bearing. This is for a set of 3 shims in the following sizes :  0.2mm/0.3mm/0.5mm   See listing for more detail on thicknesses.  Set of 3

- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these camshaft bevel shims fit between the camshaft and the front cambox bearing . Available in the following 5 sizes : 

0.5mm/0.3mm/ 0.2mm/0.1mm/0.05mm.  See listing for more detail on thicknesses.

- This is the distance piece that betweens the cams and the cambox back bearing. Pattern taken from original SOHC pre-war Cambox.  

- Single row ball bearing.fitted to the main SOHC cambox shell (i.e. front cambox bearing) on a  SOHC cambox's from 1931-56, both International (alloy) and SOHC Manx/M40 and some Featherbed (magnesium) cambox shells.  This bearing is from a top quality bearing manufacturer and will be either RHP or SKF dependent on current availablity. Price is each.  Back in Stock Nov 2024

- Single row caged roller bearing. Fitted to Model 30/40 (International) SOHC engines - rear cambox cover, as in the photo. These are either RHP or Hoffman (Hoffman became RHP) - both best quality RHP Brand and now difficult to find.  Back In Stock Nov 2024

Cambox Bearing - Camshaft Back Roller Bearing : as fitted to the Model 30M/40M (Manx) cambox backplate - identifiable from the standard International type, in that the Manx backplate is in magnesium. These are correct RHP versions in correct C3 fit - now very rare