1.d Norton SOHC Cambox

1.d Norton SOHC Cambox

1.d Norton SOHC Cambox
Norton SOHC Cambox and Rocker parts

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Cam Rocker Arm (none lipped) Side Washer

Product no.: 0288 3050
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. As well as not having a lip they are also slimmer than the later lipped type (see the second photo - the rocker arms for these type, on the right, do not have a machined recess). Note: These steel washers will not fit the very earliest cam rockers (fitted approx pre-1932) which have a different centre boss diameter These fit over the rocker arm bearing on each side, and provide a flat face for the cork washers to seal against. 4 required per cambox. By the way, it is important with these type to ensure the side walls of the rocker arm are absolutely flat with no burrs, otherwise oil will leak from the rockers more profusely
£4.90 *

Cambox Rocker Rubber Pad - Set of 4

Product no.: 0308 A11/815
Cut/planed from hard wearing oil resistent rubber (Nitrile), to the same width and thickness as originals, these are fitted both above and below the rocker arm central boss in all SOHC cambox’s. Along with the cork side washers, it is these being worn that normally results in these cambox’s leaking badly. An original single piece rubber (new old stock from the 1940’s I believe, I bought some many years ago from that great Norton exponent Phil Heath) was used as a template to ensure the correct width. This original type was supplied longer because each one was cut into two, i.e.one rubber for each rocker arm. As shown in the 1948 catalog, I supply two separate ones of similar length, both of which are slightly longer than required, which can be carefully trimmed to your required depth. (They should be trimmed so they protrude just proud of the cambox slot, so the rocker arm has to be forced – carefully, into the cambox). The smooth end should be abutting the rocker boss and your trimmed end opposite.
£14.00 *

Camshaft Bevel Shim - Various Sizes

Product no.: 0328 A11/774

- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these camshaft bevel shims fit between the camshaft and the front cambox bearing (i.e. in the front cambox well). - Fitted in conjunction with the upper vertical bevel gear shim, the ideal positioning is acheved when the gears are in line and there is a just perceptible gap (backlash) between teeth. - 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

£1.90 *

Camshaft Bevel Shim - Set of 5 Shims

Product no.: 0328b A11/774-s

- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these camshaft bevel shims fit between the camshaft and the front cambox bearing (i.e. in the front cambox well). - Fitted in conjunction with the upper vertical bevel gear shim, the ideal positioning is acheved when the gears are in line and there is a just perceptible gap (backlash) between teeth. - 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). When buying this set, I also include the A11/788 Camshaft back bearing distance piece (this can also be bought separately). Update Feb 2015: Now back in stock again

£9.00 *

Camshaft Back Bearing Distance Piece

Product no.: 0329 A11/788
- This is the distance piece that betweens the cams and the cambox back bearing. It ensures the back bearing inner cage and rollers are sititng centrally in the outer bearing (which is located in the cambox rear cover. Note this distance piece is 55 thou thick, which I find to normally be correct, but you should check yourself that this thickness locates the bearing in the correct position, as this can sometimes vary as there were many slight variations over the years. To help with this, place thick high melting point grease in the outer cage of the back bearing, then trial fit the back cover, you can then see from the marks in the grease if the inner race is in the correct position. This distance piece is also supplied as part of the camshaft bevel shim set.
£1.90 *

SOHC Rocker Box Rubber Pad Roller - Per Pair

Product no.: 0343 A11/816
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
£12.00 *

SOHC Camshaft Spacer Ring

Product no.: 0352 A11/798
This is the distinctive slotted spacer ring that fits over the camshaft in the tunnel area between the front (bevel gear) chamber and the rear (cam) chamber. On racing cambox's that employ the centrally fed camshaft oilway, this is no more than a spacer ring, however, for the road going type cambox, which uses a solid camshaft, this spacer ring is very important as oil is fed to the cam chamber along the slot. For this reason, there is a slight lip one one end, to ensure the bush can only be fitted in one direction
£9.75 *

SOHC Inlet Guide Lubrication Union and Pipe Set

Product no.: 0353 A11/778+9+80 - I
These are the brass unions that screw into the front bevel gear chamber of the SOHC cambox and feed oil to the valve guides, via the small bore copper pipes. The unions are just as per originals (originals were used as patterns), and this means they are 'sided' with the inlet union having a smaller bore than the exhaust union. The copper pipe is supplied soldered into the nipples (and the nipples only bored after this operation is completed, and full bore checked for throughput - as this soldering process often blocks pipe) and is also slightly longer than required, so it can be gently bent and cut to length to suit the engine. They are sold as a complete set per valve, therefore two (2) sets are required per engine. This description is for an Inlet Valve Guide Set
£20.00 *

SOHC Exhaust Guide Lubrication Union and Pipe Set

Product no.: 0354 A11/778+9+80 - E
These are the brass unions that screw into the front bevel gear chamber of the SOHC cambox and feed oil to the valve guides, via the small bore copper pipes. The unions are just as per originals (originals were used as patterns), and this means they are 'sided' with the inlet union having a smaller bore than the exhaust union. The copper pipe is supplied soldered into the nipples (and the nipples only bored after this operation is completed, and full bore checked for throughput - as this soldering process often blocks pipe) and is also slightly longer than required, so it can be gently bent and cut to length to suit the engine. They are sold as a complete set per valve, therefore two (2) sets are required per engine. This item is for an Exhaust Valve Guide set
£20.00 *

Timing Side Mainshaft \ Camshaft Woodruff Key

Product no.: 0356 A11/797
This is the Woodruff key that fits on the Timing Side mainshaft key and retains the mainshaft bevel. It is also the same woodruff key that is used on the SOHC camshaft to retain the cams (both keys are the same). This item is for a pack of 3 woodruff keys
£2.20 *

Exhaust Valve Lifter Volute Spring

Product no.: 0379 A3/69

This is the correct type 'volute' spring of the type originally used Norton Internationals (and also OHV and SV Nortons) to hold the exhaust valve lifter cable in tension correctly. 

£3.50 *

SOHC Eccentric Exhaust Valve Spindle

Product no.: 0401 A11/64

This is the eccentric pin that fits in the bearing boss at the front of those cambox's that are fitted with provision for an exhaust lifter mechanism (see the accompanying photograph for how the pin fits in this boss). 

£14.00 *
In stock

New SOHC Cambox - Exhaust Valve Lifter Bearing

Product no.: 0640 A11_695

This is the shouldered SOHC Cambox - Exhaust Valve Lifter Bearing that holds the eccentric exhaust valve lifter spindle - made in phospher bronze

£11.00 *
In stock

SOHC Exhaust Valve Lifter Arm and Bolt

Product no.: 0416 A11/67+68

This is a faithful reproduction of the SOHC exhaust valve lifter arn and the special 'reduced head' bolt that is fitted with it. 

£25.00 *

SOHC Exhaust Valve Lifter Set

Product no.: 0417 Exh_Lifter_Set

This listing is for a complete SOHC Exhaust valve lifter set consisting of: Eccentric valve lifter spindle, Valve lifter arm and bolt, and the volute spring. 

£41.00 *

Norton SOHC - Rocker Box Feed Pipe - Complete

Product no.: 0629 A11M/789

Complete Cambox Feed pipe and 1/4" BSP union nut's to fit all SOHC models (30/40, M30/M40 etc) - pipe length can be adjusted

£25.00 *
In stock

Norton SOHC - Crankcase Feed Pipe To Cambox

Product no.: 0631 A11M/789b

Crankcase feed pipe to cambox and 1/4" BSP union nut's to fit all SOHC models (30/40, M30/M40 etc) - this is the bottom piece of the cambox feed pipe assembly - which we offer here to be purchased seperately

£8.00 *
In stock

Lockwire - 12" length of Stainless Steel Lockwire

Product no.: 0632 Lckwre1

Lockwire:  12"/(approx) 300mm length of Goodrich stainless steel lockwire, for lockwiring breather pipes

£0.90 *
In stock

Cambox Feed Pipe Assembly - Black 5/16 Oil Pipe (4.5" / 110mm Length)

Product no.: 0633 BrthrPipe1

Black (original rubber style) 5/16" oil reistent pipe for cambox feedpipe assembly - 4.5"/110mm length

£1.60 *
In stock

Black 5/16" Oil Pipe/Breather Pipe - 3ft / 900mm Length

Product no.: 0634 BrthrPipe2

Black (original rubber style) 5/16" oil reistent pipe for use for oil breather pipes, oil pipes (or even big bore fuel pipes if required - although 1/4" bore pipe is more normally used) - 3 foot /900mm length

£10.50 *
In stock

Black 5/16" Oil Pipe/Breather Pipe - 3ft / 900mm Length (non-Ethanol)

Product no.: 0634b BrthrPipe4

Black (original rubber style) 5/16" oil reistent pipe for use for oil breather pipes, oil pipes (or even big bore fuel pipes if required - although 1/4" bore pipe is more normally used) - 3 foot /900mm length

£9.00 *
In stock
*
Recommended Retail Price, plus delivery
46 - 66 of 66 results