1.f Norton SOHC Timing Case & Crankcase Parts

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

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Cylinder Feed Lubrication Bolt - Stainless Steel (Each)

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

£29.00 *
In stock

Cylinder Feed Lubrication Bolt Lipped Nut - Stainless Steel (Each)

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.

£8.75 *
In stock

Cylinder Feed Bolt Adjuster Screw - Stainless Steel (Each)

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

£9.50 *
In stock

Cylinder Feed Bolt Adjuster Screw Nut - Stainless Steel (Each)

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

£2.40 *
In stock

SOHC Cylinder Feed Bolt Oil Adjuster - Copper Washer (Each)

Product no.: 0276 A11/40C

This is the Copper washer that fits behind the cylinder feed bolt nut on all SOHC engines.  Price is each.

£0.80 *
In stock

SOHC Mainshaft Bevel Gear - International Engines

Product no.: 0422 A11/748

This is the crankshaft bevel gear,, fitted to SOHC International (i.e. aluminium crankcase models - not magnesium) and 1930 onwards CS1 engines. These gears faithfully replicate the original Norton tooth profile and pattern and we have them made for us by a top specialist UK gear manufacturer. Price is Each. Price is Each.  24/12/21: - New batch Just in - identical to previous batch

£152.30 *
In stock

SOHC Mainshaft Bevel Gear - Manx Engines

Product no.: 0423 A11M/748

- This is the crankshaft bevel gear,, fitted to SOHC pre-Featherbed magnesium racing engines - i.e. M30/M40 and SOHC Manx type engines. These gears faithfully replicate the original Norton tooth profile and pattern and we have them made for us by a top specialist UK gear manufacturer. Price is Each.Price is Each.  24/12/21: - New batch Just in - identical to previous batch

£152.30 *
In stock

SOHC Lower Vertical Shaft Bevel Gear

Product no.: 0421 A11/751

- This is the lower vertical bevel gear, fitted to all SOHC International and Manx engines and also fitted to earlier DOHC Manx engines. These gears faithfully replicate the original Norton tooth profile and pattern and we have them made for us by a top specialist UK gear manufacturer. See detail listing for more information.  Price is Each.  24/12/21: - New batch Just in - identical to previous batch

£231.00 *
In stock

SOHC Dry Sump Gear Pump Spindle Driving Plate (Each)

Product no.: 0074 A11/729

- Driving plate for the oil pump on all SOHC engines, engaging with the oil pump drive gear on each ear, and from there driving the oil pump from the central slot.  Price is Each.

£21.00 *
In stock

SOHC Pressure Release Adjusting Screw and Locknut (Price is per pair)

Product no.: 0243 A11/42+43

This is the oil pressure adjuster (and locknut)  that sits behind the inner timing case and controls the oil pressure to the entire lubricaton system on SOHC engines.   These are both CNC manufactured to the original Norton design in stainless steel.  Price is for one adjuster bolt and locknut.  See listing for fitting details 

£15.00 *
In stock

SOHC Pressure Release Ball Spring (Each)

Product no.: 0245 A11/16

- This spring retains the pressure release ball against its seat, in conjunction with the Pressure Release adjuster, controlling the engiine feed oil pressure on the SOHC engine.  These are made to the same conical pattern as the original spring.  Price is each.

£3.20 *
In stock

SOHC Pressure Release Ball - Pack of 3

Product no.: 0244 A11/15

These are the small bal bearings which were specific to the Norton SOHC Pressure Release Mechanism behind the timing case, it controls the pressure to the SOHC oil feed system, in conjunction with the pressure release adjuster and spring. One required per engine - put sold as a pack of 3, as very easy to lose or misplace them when stripping and cleaning this mechanism

£3.50 *
In stock

SOHC Pressure Adjuster Locknuts - Pack of 3

Product no.: 0243b A11/43

These are the special 5/16" x 26tpi Half Nuts - as fitted to oil pressure adjuster bolt (which does not have the length to allow a full nut), these are in stainless steel. Pack of 3

£5.00 *
In stock

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)
£12.60 *
In stock

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)
£14.00 *
In stock

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

£9.00 *
In stock

SOHC Bevel Chamber - Oil Filter Bolt in Stainless Steel - Each

Product no.: 0075 A11/45

These SOHC Bevel Chamber Filter Bolts are CNC manufactured by us to the original Norton design - but we make them in high quality stainless steel, with the correct imperial thread and hex.  They fit into the SOHC bevel chest from the front (from approximately 1932 onwards) and are an essential part of the oil system - collecting oil that has collected in the bottom of the bevel chamber - but not allowing any swarf through. Price Is Each

£28.00 *
In stock

SOHC Bevel Chamber - Oil Filter Bolt in Stainless Steel. Reduced Head (Manx) Type - Each

Product no.: 0075b A11/45B

These SOHC Bevel Chamber Filter Bolts are CNC manufactured by us to the original Norton design - but we make them in high quality stainless steel, with the correct imperial thread and hex.  They fit into the SOHC bevel chest (from approximately 1932 onwards) and are an essential part of the oil system - collecting oil that has collected in the bottom of the bevel chamber - but not allowing any swarf through.  This particular type also has a 'reduced' head - which looks particularly nice on a competition or sports machine. Price is Each

 

£30.00 *
In stock

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)

£1.05 *
In stock

SOHC Norton Timing Chamber Paper Gasket (Each)

Product no.: 0085 A11/44

- High quality traditional paper gasket for all SOHC Norton timing chests

£3.50 *
In stock

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.  CNC Machined.  Price is Each.

£14.70 *
In stock
can be shipped within 10 days

SOHC Crankcase Feed/Return Oil Pipe Union (Original Type)

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 distinctive large oil pipes fitted to Norton Internationals. 

£13.00 *
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

£9.00 *
In stock

SOHC Crankcase Oil Pipe Union - Red Fibre Washer - Pair

Product no.: 0112 FW010

High quality Red Fibre Washer that seals the oil pipe unions on Inter/Manx crankcases. Also fits behind the A11\878 rear cylinder feed shouldered nut. Price is per pair

£2.20 *
In stock

Crankcase Breather One Way Valve - All Norton Singles

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. July 2023: Now back in Stock 

£23.00 *
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

 

£11.00 *
In stock

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!

£8.00 *
In stock

Red Fibre 'Pre-Threaded' Tight Fit 1/4" BSP Washers (i.e. Sump Plugs/Unions) - Pack of 5

Product no.: 0249 A11/719FW

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.  See detail listing for more information.  This listing is for a bag of 5 washers

£4.00 *
In stock

Red Fibre 'Pre-Threaded' Tight Fit 1/4" BSP Washers (i.e. Sump Plugs/Unions) - Pair

Product no.: 0941 A11/719FW[

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.  See detail listing for more information.  This listing is for a pair washers

£1.80 *
In stock

Red Fibre 'Washers - Sized'' 1/4" BSP Fit (i.e. Petrol Taps/Unions etc) - Per Pair

Product no.: 1111 1_4BSPFW1

These Red Fibre Washers are a nice close fit on 1/4" BSP threads and are useful for many Norton fittings - such as those breather unions and petrol taps that have a 1/4" BSP thread that comes up close to the hex or shoulder. Unlike many BSP fibre washers available these days - these ones are a good fit to the thread.  See listing for more information. Price is per pair

£1.60 *
In stock
*
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31 - 60 of 99 results