This is the bronze plunger used to feed oil to the camshaft lobes - if using a Featherbed central oil feed SOHC cambox. 

Note the Featherbed cambox used a shorter quill than pre-Featherbed models to avoid fouling the top frame tube.  It also used a shallower external nut which we also offer (Item 0069)

We CNC manufacture these quills to the original Norton pattern from the best quality Colisbro Nickel Silicon bronze (it has a more coppery look than regular phospher bronze, and Norton originally used a similar hard wearing material).

Note : These plungers are NOT interchangeable with the Bigend Feed Quill/Plunger (even though they look similar), as this plunger has a smaller feedhole! and fitting one into the BigEnd will damage the engine.  If you have a cambox using this quill type fitted, always take great care to ensure you keep this and the BigEnd quill seperated.  If you have a box of old quills and are not sure if you may have fitted a quill of the wrong type, email us on sales@racingvincent.co.uk email for information on hole size correct for Bigends.

The accompanyning photos shows the complete Featherbed cambox quill assembly on the right, with similar pre-Featherbed cambox assembly on the left.

This listing is for the quill only, other parts are sold seperately, price is each.

This is the conical spring that fits behind the cambox oil feed plunger on SOHC central feed (competition type) cambox's.

This spring is slightly shorter than the similar conical spring that is used on BigEnd quill, and specific to the cambox feed.  It is used on those cambox;s that have central oil feed.

The accompanyning photos show both types of assembly, the Featherbed Inter type uses a shorter plunger and nut - but both types use the same spring.

This listing is for the spring only, all other components are sold seperately. Price is each

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. 

These are CNC manufactured in stainless steel so as well as being the correct dimensions - they also look very pretty, as they are in prominent position on the SOHC engines.

Can also be used on Pre-War OHV/SV Timing Covers - see listing for details.

Price is for the nut only - all other components of the quill assembly are available seperately

It should be noted that this nut was also fitted to OHV and SV models (as well as the SOHC models) pre-1936, where it had the part number 9013.  However, approximately 1936-37 the OHV/SV models swopped this hexagon nut for a similar rounded blind nut with a screwdriver slot in it (part no 8750), which was then fitted to OHV/SV models until to the introduction of the plain timing cover in approximately 1938. 

We will shortly be manufacturing the 8750 type - but believe that the type 9013 can still be fitted.  If you wish to enquire on 8750 progress please email sales@racingvincent.co.uk

These nuts are CNC'd in stainless steel and look very pretty - and definitely improve the looks of either your SOHC or early OHV/SV timing side.

If you have a Featherbed SOHC model - the cambox nut on those models was shallower, we also sell that version - Item 0069

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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. 

In the accompanyning second photograph is the pre-Featherbed cambox quill assembly (with bigger nut and quill) and on the right side is the Featherbed version with the shallower nut offered here.  It should be noted that when using this nut, a smaller (Featherbed cambox quill is also required - Item 0067, sold seperately.

Very pretty in Stainless Steel.  Price is for nut only, all other items sold sepeartely

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.

It was also fitted to WD16H models (that continued to use this type of big end oil feed, when the civilian SV/OHV models had had a timing cover re-design in 1938). 

The same holder is also used on all SOHC central oil feed (competition type) cambox bevel covers. 

The quill holder has a flat milled on it - which will coincide with a flat milled on whichever casting it is used in conjunction with - it is always a good idea to get these in line when first fitting the quill holder - as they are normally a size fit - once in line, the quill holder can be lightly tapped fully home with soft headed mallet.  Always ensure the plunger/quill and spring have smooth movement in the bore before final fitting to the engine.

When used in the timing case on SOHC and OHV/SV models - it was used in conjunction with a BigEnd type quill (with bigger oil feed hole) and when used in the SOHC cambox - it was fitted with either the normal length quill or the Feathebed shorter quill - both these quill types having a smaller oil feed hole than the bigger Big End quill. 

The accompanying photos show the quill holder as part of the assembly for all these applications - note, this listing is just for the steel quill holder - all other parts of fhe assembly are sold seperately.  Price is Each.

Note -we also sell a similar version (0082_2), which has a shoulder which is 2 thou oversizew - if you have a timing cover where the original hole for this holder has worn oversize.

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

This is the same holder as item 0082, except the shoulder on this version is 2 thou oversize - in case your timing cover or (racing type) cambox cover is a bit worn and the normal type is a loose fit.  These items have a 0.438" shoulder rather than the normal 0.436" shoulder.

See Item 0082 for more detailed information on the use of these quill holders.

This listing is for quill holder only, all other items sold seperately.

Note we also sell a Featherbed DOHC version of this quill holder - by which time they had moved to a shoulder with 0.500"" OD - Item 0082_3

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. Price is each.

We source these washers specially, from a top quality hydraulic parts supplier (hence the price is more expensive than most mass produced copper washers)- because they have the correct fit for the (imperial) thread Bigend/Cambox jet holder and nut - but are not as wide as most other copper washers and are also the correct thickness. 

The outer diameter is important as the counterbor face on Norton SOHC timing covers is not very big, therefore most other copper washers are too wide and foul the cover.  These are just right - and the ones I use on my bikes, so are worth paying more for.

The BigEnd jet holder used on SOHC models was also used on pre-war OHV and Sidevalve Norton models (although normally with a round headed nut, rather than the hex nut) - but these models also use the same type of copper washer#

Note: this item is for copper washer only - all other items shown in accompanying photos are sold seperately

This is a faithful reproduction of the straight through union fitted to SOHC (and DOHC) cambox's for connecting the cambox oil feed pipe (fitted at top of crankcase and cambox), but also used as a front crankcase breather on many Inters and magnesium racing engines.  Finally it is also fitted as a breather union on the bevel chamber of magnesium racing crankcases behind the inner timing cover (while Inter crankcases instead employ a pressure telltale unit). 

It has been copied from an original item fitted to an unrestored an original pre-war racing (magnesium) cambox - the union looking like it had never been removed, so I am confident it as was as original fitment from Norton's.

This union has a flat end on the side that screws into the cambox and a taper on the end that the oil pipe fits onto.  It also has a slight chamfer on the side that screws into the cambox, just as the original does (I always fits either a red fibre or copper washer on the end that screws into the cambox/crankcase, to avoid marking the alloy - see item 0249).

Sorry these are not cheap, but unlike modern BSP union's (normally mass produced using AF hex and a modern tinted cadmium finish), these are CNC machined in small batch's from brass and use the correct Whitworth hexagon size

Note:  I have seen these unions in both brass and dull nickel plated (often brass being fitted to pre-war engines).  These are brass finish, which I think looks better, but I may be having some dull nickel plated in the near future. Email Sales@racingvincent.co.uk if you want an update on these

These Red Fibre Washers are a smaller diameter than 'normal' 1/4" BSP washers - but then pre-threaded by us - so they are a good fit on those Norton fittings that used 1/4" BSP thread, but have a groove behind the thread - e.g. Norton pre-48 Oil Sump Plugs and some breather union fittings. 

This listing is for a bag of 5 washers

Background:

For anyone that is familiar with Norton single cylinder models (and earlier twins) - they will know that it was not unusual to make some oil and petrol fittings with a 1/4"BSP thread, but with a groove machined between the thread and the rear face of hex spanner head.  Added this, often the hex was not very wide (what you will see referred to as 'Reduced Hex' by us throughout this catalog for Norton specific fastenings), so there was little hex face for the fibre washers to seal against.  

The two best examples of this are the Pre-48 style 1/4" BSP Norton Sump Plug (in all its guises) and some breather unions (see photographs - some Unions had grooves, while others did not).

Therefore, if you try and fit a 'normal' 1/4" BSP red fibre washer to this type of sump plug or union - it will go on easily, but when it gets to the groove - it will wobble around.  Then, when the sump plug or union it tightened, the wobbling washer will normally move over to one side - and there will be a very good chance it will leak, or just crush and break up when tightened.

In the past we have sold this size of 'tighter fit' washer - telling customers they will need to be prepared to use some force to wind the washer past the thread - but franky - the best quality red fibre washers are very hard, and extremely difficult to wind onto the thread!

Therefore, as part of work we did in early 2022 to replicate most Norton sump plugs, we also looked at how we could make this easier - and eventually have come up with a jig process to pre-thread these washers with a 1/4" BSP thread - as shown here.

So, although not very thick - if you look closely at these washers you will see they have an intenal thread cut into them (see also the taper tap we use for this process) . . . and that means that, although still tight, they can now be carefully screwed onto a 1/4" BSP thread by hand - but will a 'Size' fit on the groove behind the thread - therefore giving a much better chance for the washer to seal properly!

If trying to tap a single washer, it will normally just crush the washer, but with experimentation and a jig, we have come up with a process to manualy thread these washers, so they will just 'screw on' by hand.

This may sound like a simple issue . . . but actually most proprietary 1/4" BSP washers are actually quite loose on a 1/4" BSP thread (see our Item 1111 for 1/4" BSP washers that are a good fit!), but good quality red fibre washers are normally much harder than cheap washers - the washers we use are supplied by one of the best (and most expensive!) washer suppliers - and therefore require this pre-threading process . .. trying to screw it on without doing this is almost impossible.

Sorry these washers are so expensive for what looks such a simple and cheap looking thing - but hopefully you will understand that the jig and time it takes to manually thread them is what results in the extra cost - but definitely worth using if you prefer the original type Red Fibre washerer, rather than modern Dowty (nitrile/steel) washers.

We also sell these as a pair (Item 0941), or close fitting 'normal' 1/4" BSP washers (Item 1111) for those unions and tap fittings which dont have a groove behind the thread 

These Red Fibre Washers are a smaller diameter than 'normal' 1/4" BSP washers - but then pre-threaded by us - so they are a good fit on those Norton fittings that used 1/4" BSP thread, but have a groove behind the thread - e.g. Norton pre-48 Oil Sump Plugs and some breather union fittings. 

This listing is for a pair of washers (i.e. x2)

Background:

For anyone that is familiar with Norton single cylinder models (and earlier twins) - they will know that it was not unusual to make some oil and petrol fittings with a 1/4"BSP thread, but with a groove machined between the thread and the rear face of hex spanner head.  Added this, often the hex was not very wide (what you will see referred to as 'Reduced Hex' by us throughout this catalog for Norton specific fastenings), so there was little hex face for the fibre washers to seal against.  

The two best examples of this are the Pre-48 style 1/4" BSP Norton Sump Plug (in all its guises) and some breather unions (see photographs - some Unions had grooves, while others did not).

Therefore, if you try and fit a 'normal' 1/4" BSP red fibre washer to this type of sump plug or union - it will go on easily, but when it gets to the groove - it will wobble around.  Then, when the sump plug or union it tightened, the wobbling washer will normally move over to one side - and there will be a very good chance it will leak, or just crush and break up when tightened.

In the past we have sold this size of 'tighter fit' washer - telling customers they will need to be prepared to use some force to wind the washer past the thread - but franky - the best quality red fibre washers are very hard, and extremely difficult to wind onto the thread!

Therefore, as part of work we did in early 2022 to replicate most Norton sump plugs, we also looked at how we could make this easier - and eventually have come up with a jig process to pre-thread these washers with a 1/4" BSP thread - as shown here.

So, although not very thick - if you look closely at these washers you will see they have an intenal thread cut into them (see also the taper tap we use for this process) . . . and that means that, although still tight, they can now be carefully screwed onto a 1/4" BSP thread by hand - but will be a 'Size' fit on the groove behind the thread - therefore giving a much better chance for the washer to seal properly!

If trying to tap a single washer, it will normally just crush the washer, but with experimentation and a jig, we have come up with a process to manualy thread these washers, so they will just 'screw on' by hand.

This may sound like a simple issue . . . but actually most proprietary 1/4" BSP washers are actually quite loose on a 1/4" BSP thread (see our Item 1111 for 1/4" BSP washers that are a good fit!), but good quality red fibre washers are normally much harder than cheap washers - the washers we use are supplied by one of the best (and most expensive!) washer suppliers - and therefore require this pre-threading process . .. trying to screw it on without doing this is almost impossible.

Sorry these washers are so expensive for what looks such a simple and cheap looking thing - but hopefully you will understand that the jig and time it takes to manually thread them is what results in the extra cost - but definitely worth using if you prefer the original type Red Fibre washerer, rather than modern Dowty (nitrile/steel) washers.

We also sell these as a bag of 5 (Item 0249), or close fitting 'normal' 1/4" BSP washers (Item 1111) for those unions and tap fittings which dont have a groove behind the thread