1.f Norton SOHC Timing Case Parts

1.f Norton SOHC Timing Case Parts

1.f Norton SOHC Timing Case Parts
Norton SOHC Timing Case and Crankcase Parts

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SOHC Big End/Camshaft Oil Feed Jet Holder Nut

Product no.: 0068 A11M/793
- Stainless steel nut that fits over jet holder on the International and SOHC Manx timing cover (feeding oil to the BigEnd). - The same nut is also used on pre-Featherbed SOHC Manx Norton cambox covers (i.e. those with an additional oil feed). These nuts are very nicely made and really set the engine off well
£8.00 *

SOHC Big End Oil Feed Plunger

Product no.: 0080 A11/12
- This is the bronze plunger used to feed oil to the Big End Bearing, fits all SOHC engines - Note : These plungers are NOT interchangeable with the Cambox Feed Plunger, as that plunger has a smaller feedhole!
£9.80 *

SOHC Big End Oil Feed Plunger Spring

Product no.: 0081 A11/14
- This is the spring that fits behind the A11/12 Big End bronze plunger. Made to original pattern
£1.80 *

SOHC Big End Oil Jet Holder

Product no.: 0082 A11/13

- This is the jet holder that screws into the inner timing cover and retains the big end feed plunger - This is also used for the similar item on the racing cambox bevel cover for holding the camshaft oil feed jet holder - Aug 2012: Now back in stock!

£11.00 *
In stock

SOHC Big End Oil Jet Holder + 2 Thou Oversize

Product no.: 0082_2 A11/13+2

SOHC Big End jet holder, but 2 thou of an inch oversize in the shoulder

£11.00 *
In stock

SOHC Big End Oil Jet Holder - To fit DOHC Manx Norton

Product no.: 0082_3 M11/13_DOHC

DOHC Big End jet holder to fit later Featherbed framed DOHC shortstroke style engines 

£11.00 *
In stock

Jet Holder Nut - Copper Washer

Product no.: 0083C A11/716C

Copper washer that will fit behind the jet holder nut used on the timing case and racing cambox covers

£0.90 *

SOHC Big End Oil or Camshaft Jet Holder Nut

Product no.: 0083b A11/716

- Stainless steel nut that fits over jet holder on the International/SOHC Manx timing cover - The same nut is also used on pre-Featherbed SOHC Manx Norton cambox covers (i.e. those with an additional oil feed)

£8.00 *

SOHC Dry Sump Gear Pump Spindle Driving Plate

Product no.: 0074 A11/729
- Driving plate for oil pump. This important part often wears badly on the original item, you should check the ears regularly for wear - Back in Stock October 2009 (and a new lower price)
£17.00 *

SOHC LH Timing Side Mainshaft Nut

Product no.: 0078 A11/730
- Timing Side left hand thread mainshaft nut - Fits all SOHC engines 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)
£9.00 *

SOHC LH Timing Side Mainshaft Nut - Manx

Product no.: 0078b A11/730M
- Timing Side left hand thread mainshaft nut. I had a small batch made like this, which were copied from one off a pre-war magnesium Manx engine I have. Not sure if this is original - but a bit lighter and they look nice! - Fits all SOHC engines - CNC machined from solid high tensile EN8 round bar (as high tensile imperial hexagon bar is getting very difficult to obtain)
£9.50 *

SOHC Oil Pump Securing Screw - Pair

Product no.: 0609 A11/732

Securing screw to fit SOHC oil pump - with reduced head.  Price is per pair

£7.50 *
In stock

SOHC Oil Filter for Crankcase Bevel Chamber

Product no.: 0075 A11/45

- Manufactured in high quality stainless steel, these items have very fined slots along their length along oil to pass through but trapping any swarth or debris - Screws into the base of the timing case on all post 1931 SOHC engines - Not easy to manufacture, which I'm afraid is reflected in the price, but they do look really nice

£25.00 *

SOHC Oil Filter For Crankcase Bevel Chamber - Reduced Head (Manx)

Product no.: 0075b A11/45B

- Manufactured in high quality stainless steel, these items have very fined slots along their length along oil to pass through but trapping any swarth or debris - Screws into the base of the timing case on all post 1931 SOHC engines - Not easy to manufacture, which I'm afraid is reflected in the price - For my own racing machines I tend to reduce the head of all the bolts, including this filter bolt, so I have made some of these for sale. They do not really save much weight, but they do look nice!

£27.00 *

SOHC Oil Filter (Dowty) Washer

Product no.: 0090 E5264

- Modern equivelant Dowty washer (outer washer is zinc plated steel, inner washer is neoprene). This washer is used behind the timing chamber filter bolt and also at the back of the rear cylinder crankcase mouth bolt (that has an oil feed)

£1.00 *
In stock

SOHC Timing Chamber Paper Gasket

Product no.: 0085 A11/44
- Traditional paper gasket for all SOHC timing chests
£2.40 *

SOHC Drive Side Mainshaft Nut

Product no.: 0079 A11/475

- Large right hand thread driveside nut, secures engine sprocket on taper - Fits all SOHC engines and early DOHC engines - And now CNC machined from solid high tensile EN8 round bar (as high tensile imperial hexagon bar is getting very difficult to obtain), so they look really nice as well!

£11.00 *
In stock
can be shipped within 10 days

SOHC Crankcase Feed/Return Oil Pipe Union

Product no.: 0246 A11/721

These are the unions that screw into the crankcase behind the timing chamber - it is the smaller 1/4" BSP side that screws into the crankcase, the larger side is 3/8" BSP and takes the distincitve large oil pipes fitted to Norton Internationals. 

£9.00 *
In stock

Crankcase Oil Pipe Union - AF

Product no.: 0246b A11/721-AF

This is the Union that fits into International and SOHC Manx crankcases for both Feed and Return. It allows for the standard 3/8" BSP SOHC Norton oil pipes to be connected. It is very close to original but is a modern item, and uses a larger spanner hex, requiring a UNF spanner. This is a cheaper alternative to the original brass union that I have made specially (Item no 0246), but as you only need to screw it in once this is not really an issue - item is still high quality and is cadmium plated. - Price is per each

£4.00 *

Crankcase Oil Pipe Union - Fibre Washer

Product no.: 0247 A11/721FW

This is the fibre washer that fits behind the oil feed/return crankcase union. Also fits behind the A11\878 rear cylinder feed shouldered nut

£1.20 *

Crankcase Breather (One Way Valve)

Product no.: 0248 A2/707

Correct (and as per original) 1/4" BSP 'One Way Valve' - as fitted to all Norton singles, including all SOHC, OHV and SV models - this item screwing into the recess just above the drive side main bearings, allowing the engine to breathe correctly

£18.00 *
In stock

SOHC Crankcase Union/Cambox Union/Breather Union (straight thru)

Product no.: 0248b A11/719

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).  Copied from an original pre-war item

 

£8.00 *

Crankcase Breather (straight thru) - AF

Product no.: 0248c A11/719-AF

This is modern replacement for the straight thru breather used on Norton crankcases and timing cases - but uses AF Hex (not Whitworth) - if you are not worried about originality!

£4.00 *

Crankcase Breather - Fibre Washer

Product no.: 0249 A11/719FW

Surprisingly it is very difficult to find good quality vulcanised (red fibre) washers to fit 1/4"BSP fittings. These red fibre washers are of the highest quality (from a specialist manufacturer) and have just the right external diameter - but are a very tight fit on the thread. To fit them I place the breather (or similar 1/4" BSP fitting) in soft jaw vice, then place these washers just onto the thread - then I carefully use a pair of large pliers (the circular hole with coarse teeth) to carefully wind them onto the thread. Although this is difficult - the result is the correct size washer that does not look out of place under a Norton breather (unlike many modern ones that are far too wide and look out of place). These are high quality washers from a top manufacturer - sold in pack of 5. Note: do not buy if you are worried you might not be able to fit them!!

£2.10 *

Oil Tank Union (without gauze)

Product no.: 0248d A11\292
This is the oil tank union fitted to many International\Manx oil tanks with the larger 3\8" BSP fitting on both sides (crankcase unions were smaller on the crankcase side). Please note - these do not have gauze filters fitted, which the 'Feed' side union would have had originally (I might make some of these in the future). Gauze can easily be added in by soft soldering.
£4.00 *

SOHC Crankcase Union/Sump Bolt Filter 1/4" BSP Copper Washer - Pack of 3

Product no.: 0090b E5264-C1

1/4" BSP Copper Washer - pack of 3. This washer is suitable for use in 3 places - the main Oil pipe unions that screw into the crankcase (see second photograph), the Oil filter bolt that fits at the base of the timing case chamber or the sump plug screw. 

£2.90 *

SOHC Breather and One Way Valve Copper Washer- Pack of 3

Product no.: 0091b E5264-C2

- 1/4" BSP Copper Washer - pack of 3. This washer is suitable for use in 3 places - the Drive Side One Way Valve and the straight through breather or unions fitted to SOHC crankcase fittings and cambox. These washers are not quite as wide as item 0090b, and therefore look less obtrusive when fitted behind these unions (you may decide though you prefer to fit red fibre washers which we also sell). These can also be fitted to 1/4 BSP petrol taps. Sold as a pack of 3

£1.90 *

SOHC Pressure Release Adjusting Screw and Locknut

Product no.: 0243 A11/42+43
This is the oil pressure adjuster that sits behind the inner timing case. This is the adjuster used to regulate the oil pressure, used in conjunction with a stell ball and spring, which I also sell It is also supplied with the correct 'half nut' style locknut, and with all my parts that are visible, they are both manufactured from stainless steel. Price is for both items
£10.50 *

SOHC Pressure Adjuster Locknuts - Pack of 3

Product no.: 0243b A11/43
5/16" x 26tpi Half Nuts, as fitted to oil pressure adjuster bolt, stainless steel. Pack of 3
£3.60 *

Pressure Release Ball

Product no.: 0244 A11/15
- 7/32" Ball used in the Pressure Release Mechanism behind timing case. - Note : I find it a good idea to keep a few of these spare as if the adjuster comes loose and drops out, these balls are always lost. I alleviate this by selling a minium qty of 3
£1.80 *

SOHC Pressure Release Ball Spring

Product no.: 0245 A11/16
- This spring retains the 7/32" ball on the Pressure Release adjuster, fitted behind the timing case. Made to original pattern
£1.80 *

Cylinder Feed Bolt Adjuster Screw

Product no.: 0259 A11/40

This is the adjuster screw that controls feed of oil to the barrel, through the rear cylinder bolt - Exactly as per original, but much prettier in stainless steel

£8.50 *
In stock

Cylinder Feed Bolt Adjuster Screw Nut

Product no.: 0260 A11/41

This is the special reduced head nut, that acts as a lock nut for the adjuster screw A11/40 - Just as per original, but much prettier in stainless steel

£1.60 *
In stock

SOHC All Models - Timing Case Mainshaft/Bevel Shim - Various Sizes

Product no.: 0264 A11/46c

- Essential when rebuilding your engine to ensure that the mainshaft bevel has the correct backlash and position in relation to the lower vertical bevel gear, these mainshaft shims fit between the timing side main bearing and the mainshaft bevel gear - This shim is used once the crankshaft has been shimmed and you are fitting the lower bevel gears. - available in the following 5 sizes :0.002"

/0.004" /0.008"/0.016"

/0.023". - Note: if buying individual shims, please state size when you place the online order, thanks. Update Feb 2015: Now back in stock again

£2.50 *

SOHC All Models - Timing Case Mainshaft/Bevel Shim - Set of 5 Shims

Product no.: 0264b A11/46a-s

- Essential when rebuilding your engine to ensure that the mainshaft bevel has the correct backlash and position in relation to the lower vertical bevel gear, these mainshaft shims fit between the timing side main bearing and the mainshaft bevel gear - This shim is used once the crankshaft has been shimmed and you are fitting the lower bevel gears. - This is for a complete set of 5 shims in the following sizes :0.002"

/0.004" /0.008"/0.016"

/0.023". (with a cost saving over buying them separately). Update Feb 2015: Now back in stock again

£12.00 *

Cylinder Feed Bolt - Copper Washer

Product no.: 0276 A11/40C
Copper washer that fits behind the cylinder feed bolt nut
£0.75 *

Cylinder Feed Lubrication Bolt - Lipped Nut

Product no.: 0277 A11/878

- 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.

£8.50 *
In stock

Cylinder Feed Lubrication Bolt

Product no.: 0316 A11/38
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, in conjunction with item A11/41 , sold seperately. This item is CNC machined out of Stainless Steel, it being copied exactly from an original bolt. Note: there have been slight variations in crankcase designs over the years. This part should fit most International and SOHC Manx type crankcases, but very early crankcases did have a smaller diameter on the bore closest to the lipped nut (the bolt can have its shoulder turned down to fit though). This type of early crankcase did not have such a pronounced counterbore at the back of the crankcase either, so length of this bolt may be nominal for that very early crankcase. If you are not sure, then email me for details first, I will be glad to help
£22.00 *

Cylinder Lubrication Feed Bolt Kit

Product no.: 0317 CYLFEED1
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
£39.00 *

SOHC Inner Timing Cover - Aluminium : No Breather Hole

Product no.: 0318a A11/7
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. The patternmakers I use are excellent, and if I say so myself, the castings are virtually identical in shape and contour to an original - including the inner face and boss. They come with the oil pump drive bearing already pressed in and reamed, and this phosphur bronze bearing has the correct spiral turned oil groove running through it, which stops just before it reach's the outer face - a feature often overlooked, which if allowed to run all the way through, can result in excessive oil being fed into the magneto chain well. It is manufactured in LM25TF Aluminium. It should be noted that when ordering an Aluminium timing cover, these came in two standard types: Very early and very late covers were devoid of a breather hole (as per all magnesium timng covers), but for a period around the mid 30's to late 1940's (I think!), they had a breathing hole at the upper part of the bevel chamber. This listing is for an aluminium timing cover WITHOUT breather hole. Aluminium covers are supplied with the visible areas polished (but due to the intricate shape, I have refrained from obtaining an overpolished mirror finish, to avoid the increased risk of damaging the machined faces). Note: After initial machining of this batch of timing covers it was found that with the variation in different original outer covers over the years, somes did not line up well. Therefore, the top threaded hole of the covers was bored out to take an oversize threaded insert, and then the 1/4 BSW" thread hole re-machined in a slightly different position, to make the fit more 'generic'. This insert has been expertly applied and is virtually invisible. It in no-way reduces strengh (in fact it makes the thread stronger, as it is of a higher tensile strength than the original casting material!), but it is mentioned for completeness. The final photograph in this item shows an Inner Timing Cover, matched with an Outer Timing Cover - Sold Seperately
£260.00 *

SOHC Inner Timing Cover - Aluminium : With Breather Hole

Product no.: 0318b A11/7b
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. As standard the inner timing cases have been machined without the breather hole. However, I include a picture of an original timing cover inset to the main cover, that has this additional breather hole. If this catalog item is ordered then I have a jig to ensure the hole is machined into the correct position. If ordering this version of the Inner Timing Cover please bear in mind there may be a two week delay to allow for the cover to have the additional hole machined. 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. The patternmakers I use are excellent, and if I say so myself, the castings are virtually identical in shape and contour to an original - including the inner face and boss. They come with the oil pump drive bearing already pressed in and reamed, and this phosphur bronze bearing has the correct spiral turned oil groove running through it, which stops just before it reach's the outer face - a feature often overlooked, which if allowed to run all the way through, can result in excessive oil being fed into the magneto chain well. It is manufactured in LM25TF Aluminium. It should be noted that when ordering an Aluminium timing cover, these came in two standard types. Very early and very late covers were devoid of a breather hole (as per all magnesium timng covers), but for a period around the mid 30's to late 1940's (I think!), they had a breathing hole at the upper part of the bevel chamber. This item is for a timing case WITH breather hole. Note - when ordering this item, there may be a delay of two weeks, to allow me to machine the additional breather hole into the cover. Aluminium covers are supplied with the visible areas polished (but due to the intricate shape, I have refrained from obtaining an overpolished mirror finish, to avoid the increased risk of damaging the machined faces). Note: After initial machining of this batch of timing covers it was found that with the variation in different original outer covers over the years, somes did not line up well. Therefore, the top threaded hole of the covers was bored out to take an oversize threaded insert, and then the 1/4 BSW" thread hole re-machined in a slightly different position, to make the fit more 'generic'. This insert has been expertly applied and is virtually invisible. It in no-way reduces strengh (in fact it makes the thread stronger, as it is of a higher tensile strength than the original casting material!), but it is mentioned for completeness
£265.00 *

SOHC Inner Timing Cover - Magnesium

Product no.: 0318c A11M/7
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. The patternmakers I use are excellent, and if I say so myself, the castings are virtually identical in shape and contour to an original - including the inner face and boss. In the second photograph here, you can see an original casting (upper) compared to my version (lower), which demonstrates how close to identical they are. They come with the oil pump drive bearing already pressed in and reamed, and this phosphur bronze bearing has the correct spiral turned oil groove running through it, which stops just before it reach's the outer face - a feature often overlooked, which if allowed to run all the way through, can result in excessive oil being fed into the magneto chain well. It is manufactured in A8 Magnesium Alloy and is substantially lighter than the normal LM25TF aluminium version. Magnesium inner timing covers are supplied fully chromated (covers are re-chromated after machining to ensure ALL surfaces are protected) - the black chemical finish that protects the base magnesium from corrosion, a necessary precaution as this alloy suffers from oxidisation if left exposed to the atmosphere. They are also lightly sprayed in water repelling (Duck) oil before being placed in sealed bags, to further protect them from condensation in storage, which explains the 'wet' look in the photographs. Which model specification would these have originally been fitted to? - These would have been fitted to any SOHC Norton fitted with magnesium (M30/40 or Manx) crankcase. They would have also been fitted to early pre-Featherbed type DOHC Manx engines. Normal production M30/Manx specification was to magnesium crankcase, magnesium Inner timing cover and aluminium outer cover - however some Works and Works supported engines were fitted with magnesium outer covers (which I can also supply). However these inner covers can also be fitted to aluminium International crankcases if required as the casting is the same (as per my Racing International). Note: there was only one variety of magnesium cover supplied - the type with no breather hole. However, if you wish to fit a magnesium cover to an International engine originally fitted with a cover with breather, then email us and we can provide this service separately. Final Note: After initial machining of this batch of timing covers it was found that with the variation in different original outer covers over the years, somes did not line up well. Therefore, the top threaded hole of the covers was bored out to take an oversize threaded insert, and then the 1/4 BSW" thread hole re-machined in a slightly different position, to make the fit more 'generic'. This insert has been expertly applied and is virtually invisible. It in no-way reduces strengh (in fact it makes the thread stronger, as it is of a higher tensile strength than the original casting material!), but it is mentioned for completeness
£275.00 *

SOHC Plain Outer Timing Cover - With Rev Clock Boss (Aluminium)

Product no.: 0319 A11M/9

This is the 'Plain' 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). This type was fitted as standard on pre-featherbed Manx Nortons, but was often seen fitted to Norton Internationals, if wanting to fit a rev clock. These versions have been faithfully replicated from an original pattrn, even including the original casting number and inner webbing. They have then been CNC machined and for the aluminium versions they are bright polished and ready to fit. 3\16" BSF screws should be used for the rev clock fitting.

£140.00 *

SOHC Plain Outer Timing Cover - With Rev Clock Boss (Magnesium)

Product no.: 0320 A11M/9(M)

This is the 'Plain' type SOHC outer timing cover fitted to Norton International and Manx models from 1938 onwards. 

£150.00 *

SOHC Ribbed Outer Timing Cover - With Rev Clock Boss (Aluminium)

Product no.: 0321 1X04(R)
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, which were available even in those early days, but as rev clocks were only just starting to be used in the mid 1930's these covers were only made in very small numbers and are now very rare and highly desirable. I am very fortunate to have a friend who has one of these original covers and was able to lend me it so we could have patterns made to produce this exact copy. Please note: these are slightly more expensive than the plain covers, as the casting costs are more expensive with these patterns 05/12: These versions have been faithfully replicated from an original pattrn, even including the original casting number and inner webbing. They have then been CNC machined and for the aluminium versions they are bright polished and ready to fit. 3\16" BSF screws should be used for the rev clock fitting.
£145.00 *
*
Recommended Retail Price, plus delivery
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