1.d Norton SOHC Cambox

- 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

- 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

Stainless steel shouldered hexagon nut that fits over jet holder on the International and SOHC Manx timing cover (feeding oil to the BigEnd) and cambox on Pre-Featherbed SOHC Cambox's with central Oil Feed. Also fitted to some Pre-War OHV/SV models - see listing for details.  Very pretty nut in stainless steel.  Price is Each

- Stainless steel nut that fits over the oil feed jet holder on the Featherbed cambox bevel cover. This nut is shallower than the Pre-Featherbed models, to stop it fouling the top frame tube on Featherbed Inters.  Very pretty in Stainless Steel.  Price is Each

- This is the bronze plunger quill used to feed oil to the camshaft lobes if using a (pre-Featherbed) central oil feed SOHC cambox, i.e. Racing Internationals, M30/M40 and SOHC Manx Cambox's.  Note May 2024: New Batch now manufactured and back in stock

- This is the bronze plunger/quill used to feed oil to the camshaft lobes if using a Featherbed central oil feed SOHC cambox. Copied from an original item.  Price is each

This is the conical spring that fits behind the cambox oil feed plunger on SOHC central feed (competition type) cambox's , see detail listing for more information. Made to original pattern. Price is each

- This is the steel jet holder that screws into the inner timing cover on SOHC and pre-1938 OHV/SV models - and retains the big end oil feed plunger/quill.  The same holder is also used on all central oil feed (competition type) cambox bevel covers.  See listing for mor information. Price is Each

SOHC (and pre-38 OHV/SV) Big End, and SOHC cenral oil feed cambox jet holder - but shoulder is 2 thou of an inch oversize, for those with worn timing cover/cambox cover quill holder holes.  See listing for more information. Price is each

Copper washer that fits behind Bigend jet holder nut on SOHC and pre-war OHV/SV Norton singles and similar racing SOHC cambox' oil feed nuts. Best quality and the correct size for the job. Price is each

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!

- Cork Washer, fits on either side of the rocker arm bearing - Fitting new cork washers helps keep the cambox oiltight.  Cork thickness = 2.0mm (Std type) - Price is each.  See detail listing for fitting information

- Cork Washer, fits on either side of the rocker arm bearing - Fitting new cork washers helps keep the cambox oiltight.  Cork thickness = 2.4mm (Med type) - Price is each.  See detail listing for fitting information

- Cork Washer, fits on either side of the rocker arm bearing - Fitting new cork washers helps keep the cambox oiltight.  Cork thickness = 3.0mm (Thick type) - Price is each.  See detail listing for fitting information

For the earlier type rocker arms - which are identifiable by not having a machined recess to take the later 'lipped washer', I have had a batch of the cam rocker steel washers, that fit between the rocker arms and the cork washers

These are the half circular hardened steel plates that are located beneath the lower cambox rubbers, and which the rubber adjuster screws (A11/817) push against to ensure the lower cambox rubber's are held tight against the rocker arms. There are two per cambox, and are therefore sold as a pair

SOHC Cambox Rubber Pad Bottom Adjusting Screw (Stainless Steel) - Original Length Type.  CNC manufactured in stainless steel to original Norton pattern, with square adjusting head. Note: Youtube link in detail listing to see this part being made

These are the special 'Reduced Hex' nuts, as originally fitted to the rubber pad (square) adjusting screw A11/817 - CNC manufactured in stainless steel to the original Norton pattern with Whitworth spanner size.  Price is Each

SOHC Cambox Rubber Pad Bottom Adjusting Screw (Stainless Steel) - Longer Length Type.  CNC manufactured in stainless steel to original design but fractionally longer shaft - see listing for more detail. Price is each

This Flat Bottomed Rocker Adjuster and Tapered Locknut are to fit the first SOHC Walter Moore (i.e. Cricket Bat type) and 1930 - 1937 OHV Models.  They were fitted to CS1 models from 1927-1930 (approximately) and OHV models from 1929 - 1937.  This type of rocker adjuster were fitted to the rear rocker arms and acted directly on the valves.  We have CNC manufactured this type using an original early 1930's Norton item as the pattern and includes the correct profile locknut, with tapered bottom face, the locknut being in stainless steel.  See listing for more detail.  Price is for a single adjuster and locknut (i.e. 2 parts)

This Flat Bottomed Rocker Adjuster and Tapered Locknut are a slightly longer version of the 9163 (Std length) adjuster fitted to early SOHC engines and most OHV models up to 1937.  We modellecd this 5mm longer version on an original adjuster - that may have been modified, as at least one customer has requested a longer type.  See Listing for more information. Price is for a single adjuster and locknut (i.e. 2 parts)

These are the distinctive 9/32" x 26tpi BSC tapered locknuts as fitted to the Norton OHV/Walter Moore CS1 Flat Pad type rocker adjusters (our items 1121 and 1122 from approximately 1929-37.  These have been CNC manufactured in stainless steel to exactly the same dimensions as a Norton 1930's example.  Note we also sell the locknut with the actual adjuster - see Item 1121 and 1122, but as the original nuts are often chewed or come loose and fall off - we sell them on their own here.  Price is each (i.e. one locknut)