1.d Norton SOHC Cambox

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

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

- Inlet and Exhaust cam to fit 500cc SOHC engine - with same profile as original 500cc M30/Longstroke Manx Profile 

- Inlet and Exhaust cams to fit 500cc SOHC Model 30/International engines 

- Inlet and Exhaust cam set to fit 350cc (Model 40/40M) SOHC engine models

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.

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

- 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

- 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

- 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

- Single row caged roller bearing. Fitted to Model 30/40 (International) SOHC engines. These are either RHP or Hoffman (Hoffman became RHP) - both best quality and in correct and very difficult to find C3 fit. 

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

- Countersunk screw used to retain securing plates for both main bearings in the crankcases and front camshaft bearings. These are the screws that are soldered over their heads once fitted, to ensure they dont work loose. This is for a bag of 3 screws

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

- 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)

Cambox rocker outer bearing assembly, consisting of one phospher bronze bearing cage, one outer bearing, 2 hardened side washers and 12 rollers. See detail listing for important information

Complete cambox rocker bearing assembly, consisting of one phospher bronze bearing cage, one outer bearing, 2 hardened side washers,12 rollers and also the cam rocker pivot bolt and castellated nut. See detail listing for important information

This listing is for an original type (i.e original obsolete type Imperial rollers) Replacement phosphor bronze cage, rollers and hardened side washers - for those owners of original SOHC camboxs (1934-58), who do not wish to repace the original imperial outer bearing, that is pressed into their rocker arms.  We have these rollers made specially for us, as the original roller size is now obsolete.  See detail listing for more info.  Price is per set for one rocker arm

Fitting and Honing service for a rocker bearing assembly into your Rocker arm, see detail listing for more information - Do not post Rockers without contacting us first!

- 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

- Spare top nut for the 3 piece tappet adjuster set.