1.f Norton SOHC Timing Case & Crankcase Parts

This is the rarest of all timing covers - the pre-1938 'Ribbed' type outer timing cover, but made in magnesium. As far as I am aware, there were only a handful of these covers made, for the 1937'ish Big Plunger Works race bikes. A nice addition if you have a pre-war competition Inter or early Manx and like the ribbed type cover and want to give it that special touch.  They are also very light!

This is the Works 'Smooth' type SOHC outer timing cover fitted to Norton International and Manx models from 1938 onwards, with provision for a rev clock - but this type are the rare 'Works' version in magnesium alloy. 

This is the 'Ribbed' type SOHC outer timing cover fitted to Norton International and Racing International (early Manx) models up to 1938. This version is the sports\racing version that has a rev clock boss cast in - and were originally rare as soon replaced with the 'smooth' type

This is the 'Smooth' type SOHC outer timing cover fitted to Norton International and Manx models from 1938 onwards. This version is the sports\racing version that has a rev clock boss cast in (generally considered the most desirable type). 

Pair of cheesehead screws to fit Rev Clock gearbox to our SOHC Timing Covers

This listing is for a matched pair of SOHC Inner Timing Cover and Outer Timing Cover with rev clock boss.  There are various combinations available - when ordering we will come back to you on availability and price - but will be cheaper than buying both seperately

This is a magnesium timing cover to fit SOHC M30/M40 Norton Racing Internationals (pre-war) and pre-Featherbed Manx Norton engines. As with all parts we produce, these castings have been maufactured to be as close as possible to the shape and look of the original castings, and even have the original casting number, in the same position as per original. Complete with bronze oil pump bearing fitted

This is an aluminium timing cover to fit SOHC Norton International, CS1 and pre-Featherbed Manx Norton engines - that were originally fitted without a breather hole (see also item 0318b for covers with breather holes). As with all parts we produce, these castings have been maufactured to be as close as possible to the shape and look of the original castings, and even have the original casting number, in the same position as per original. Polished alloy and with bronze oil pump bearing fitted

This is an aluminium timing cover to fit SOHC Norton International, CS1 and pre-Featherbed Manx Norton engines, of the type originally fitted with a breather hole. Polished and with bronzde oil spindle bearing fitted.  Aug 22: Please read listing for availability update

This is the phosphor bronze bush fitted to all SOHC inner timing cases, which is the bearing for the oil drive gear. These bearings are often badly worn on original engines - easily identifiable because excess oil will collect in the outer timing case space (the area containing the magneto chain), Ours are made to the original dimensions and pattern iincluding inner oil scroll.  Price is each

This is a 1:1 (non-reversing) rev clock gearbox that can be fitted to any of our outer timing covers - and most other British motorcycles using this style of rev clock mount. They are excellent quality - and although not of the 1930's/40's bronze type (which are unobtainable now), they are of the slightly later design also fitted to British sports/racing bikes in 50's/60's and definitely look the part.  UK manufactured.  See Detail Listing for more information.  Price is per unit

This is a 2:1 (non-reversing) rev clock gearbox that can be fitted to any of our outer timing covers - and most other British motorcycles using this style of rev clock mount. They are excellent quality - and although not of the 1930's/40's bronze type (which are unobtainable now), they are of the slightly later design also fitted Manx Nortons and to most British sports/racing bikes in 50's/60's and definitely look the part.  UK manufactured.  See Detail Listing for more information.  Price is per unit

This item is for a 38" length Rev Clock Cable - of the pre-war type, that were rubber sheathed - for the ultimate in originality on your pre-war Inter or competition bike, if fitted with a Smiths Chronometric Rev Clock.  We take a good quality proprietary rev clock cable, and add our own oil resistent black rubber sheathing, and stainless steel ferrules - the finished result is that authentic pre-War look.  See detail listing for more information. 

Good quality 36" rev clock cable, to fit post-war Norton International and Manx models fitted with chronometric rev clock.  This is the post-war type, with normal black waterproof outer covering.

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

- Red Fibre Washers: Premium quality red fibre washers - as originally fitted behind all Norton single cylinder (engine cover) cheesehead 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

- This is the bronze quill/plunger used to feed oil to the Big End Bearing, fits all SOHC engines, and those pre-38 OHV/SV engines with external round nut on timing over. Note : These plungers are NOT interchangeable with the Cambox Feed Plunger, as that plunger has a smaller feedhole!

- This is the conical spring that fits behind the A11/12 bronze Big End quill - and pushes it against the crankshaft Big End oil feed tapered hole). Made to original pattern.  Also as used on pre-War OHV/SV models using similar quill holder - see detail listing for more information.  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

DOHC Big End jet holder to fit later Featherbed framed DOHC shortstroke style engines - similar to the SOHC version, but the shoulder and thread are a wider diameter - see detail listing for more information.  Price is each

Similar to our 0083c Copper washer that fits behind the normal SOHC Bigend jet holder nut, this version of the copper washer performs the same purpose for the larger diameter DOHC Jet Holder nut, which has a 0.5" internal diameter.  Manually made - see listing. Price is each

Distinctive small hex blanking plug/bolt that locates on the left side on the crankcase lower bevel platfom.  CNC maufactured in stainless steel and includes red fibre washer 

This is a 'Variable' Listing, showing various types of Norton sump plugs - as were fitted to most Norton models from the 1920's through to the 1950's, both engine and gearbox, and also some additional 'Racing' type, either drilled for Lockwire and even a couple 'Wasted' for weight saving.  All are modelled on original Norton sump plugs - with all major dimensions replicated exactly.  All 1/4"  BSP are CNC made in brass, satin nickel plated.  1/8" BSP are in stainless steel.  Price is Each, all supplied with washers.  See detail listing for full range breakdown and where they are each most commonly used

This kit of parts consists of the Cylinder Feed Bolt (A11/38), Cylinder Feed Lipped Nut (A11/878), Camfeed Adjuster Screw and nut (A11/40) + (A11/41), Adjuster screw washer (A11/40c), lipped nut Fibre Washer, 3/8" Stainless nut (for the drive side) and steel washer and fibre washer to go behind that (although this may be replaced with either Dowty washer or copper washer depending on what is in stock at the time. It also comes with instructions for setting this kit up for optimum oil setting. Buying these items as a kit provides a discount over buying the items individually

This is the multi-stepped crankcase bolt that is drilled through it centre to feed oil to the back of the crankcase wall, as well as providing a means to meter the feed of oil to the cambox

- This lipped nut is milled from solid round stainless bar and much improves appearance, particularly as the original are normally quite chewed. Not the cheapest of nuts due to the fact that it has to be machined from solid round bar. Update Dec 2010: New stock of these now in, CNC machined and beautiful to look at.