1.c Norton SOHC Head and Barrel

1.c Norton SOHC Head and Barrel

1.c Norton SOHC Head and Barrel
Norton SOHC Head and Barrel parts, including valvegear

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500cc SOHC 11/32" Stem Inlet Valves (Blank Stem) - For Model 30 (International)

Product no.: 0033a A11/142A
- Highest quality inlet valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.750" or 1.790" - standard Model 30/40 stem diameter : 11/32" - Stem length: 4.875", left blank at end, so these can be cut to the same length as your original, and then the collet groove machined afterwards. This is the best way to ensure that you will have a valve the correct length for your cambox and spacing between cambox and head, particularly important if you are replacing a valve with a more obscure length. This type requires you undertake the final cutting to length yourself. If you wish us to cut the valve to length and machine the collet groove, please email seperately with order - expect £11 charge per valve, and turnaround time of at least 3 weeks.
£44.00 *

500cc SOHC 11/32" Stem Inlet Valves (Sized - 4.590" Length, 1.750\790" Head)

Product no.: 0033b A11/142B
- Highest quality inlet valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.750" or 1.790" (please state which head size when ordering) - standard Model 30\40 stem diameter : 11/32" - Stem length: 4.590", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years, however, this length - 4.590" is one of the most commonly used. If you have an original then measure that. If you are unsure please email me
£46.00 *

500cc SOHC 11/32" Stem Inlet Valves (Sized - 4.590" Length, 1.825" Head)

Product no.: 0033c A11/142C
- Highest quality inlet valves manufactured by G & S Valves - This valve is in a larger head size - 1.825". It was sometimes fitted to later International's and SOHC Manx's (but can also be fitted to earlier engines if req'd) - standard Model 30\40 stem diameter : 11/32" - Stem length: 4.590", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years, however, this length - 4.590" is one of the most commonly used. If you have an original then measure that. If you are unsure please email me
£46.00 *

500cc SOHC 11/32" Stem Inlet Valves (Sized - 4.650" Length, 1.825" Head)

Product no.: 0033d A11/142D
- Highest quality inlet valves manufactured by G & S Valves - This valve is in a larger head size - 1.825". It was sometimes fitted to later International's and SOHC Manx's (but can also be fitted to earlier engines if req'd) - standard Model 30\40 stem diameter : 11/32" - Stem length: 4.650", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years. Thiis length - 4.650" is also relatively common (and I believe more so with the larger valve size). If you have an original then measure that. If you are unsure please email me
£46.00 *

500cc SOHC 11/32" Stem Inlet Valves (Sized - 4.650" Length, 1.855" Head)

Product no.: 0033e A11/142E

- Highest quality inlet valves manufactured by G & S Valves - This valve is in a larger head size - 1.855". Probably the largest diameter head inlet valve fitted to SOHC Norton engines, this head would normally only be fitted to racing engines (I think I have one of these fitted in one of my racing methanol heads. - standard Model 30\40 stem diameter : 11/32" - Stem length: 4.650", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years. Thiis length - 4.650" is also relatively common (and I believe more so with the larger valve size). If you have an original then measure that. If you are unsure please email me

£46.00 *

500cc SOHC 5/16" Stem Inlet Valves (Blank Stem) - For Model 30M (SOHC Manx)

Product no.: 0034 A11/142B

- High quality inlet valves manufactured by G & S Valves. - Following Head Sizes available (check your original) : 1.790". - Model 30M stem diameter : 5/16" valves were sometime fitted to late SOHC Manx engines and early DOHC engines. - Stem length: 4.875", left blank at end, so these can be cut to the same length as your original, and then the collet groove machined afterwards. This is the best way to ensure that you will have a valve the correct length for your cambox and spacing between cambox and head, particularly important if you are replacing a valve with a more obscure length. This type requires you undertake the final cutting to length yourself. If you wish us to cut the valve to length and machine the collet groove, please email seperately with order - expect £11 charge per valve, and turnaround time of at least 3 weeks. 09/09/12 - Note: 5/16" Valves currently out of stock. Email for details

£44.00 *

500cc SOHC 5/16" Stem Inlet Valves (Blank Stem) - For Model 30M (Manx type)

Product no.: 0035 A11M/142C
- High quality inlet valves manufactured by G & S Valves - Dimensions: 1.906" Head Size (approx 1 29/32") x 5/16" stem diameter, as used on late Gardengate Manx heads - Stem length: 4.900", left blank at end, so can be finished to your engine (standard practice for these engines) - CURRENTLY OUT OF STOCK - Contact me if you require these I may be considering re-ordering
£0.00 *

500cc SOHC 5/16" Stem Inlet Valves (Sized) - For Model 30M (Manx type)

Product no.: 0036 A11M/142D
- 5/16" stem Inlet valve, but with stem machined to size, to fit late 30's-40's 'Square' type head - Dimensions: 1.906" Head Size (approx 1 29/32") x 5/16" stem diameter, as used on late Gardengate Manx heads - Stem length: 4.530", collet grooves finish machined. - CURRENTLY OUT OF STOCK - Contact me if you require these I may be considering re-ordering
£0.00 *

500cc SOHC 3/8" Stem Exhaust Valves (Blank Stem) - For Model 30 (International)

Product no.: 0037a A11/143A
- High quality exhaust valves manufactured by G & S Valves. - Following Head Sizes available (check your original) : 1.735" and 1.750" (state which when ordering). - standard Model 30/40 stem diameter : 3/8". - Stem length: 4.875", left blank at end, so these can be cut to the same length as your original, and then the collet groove machined afterwards. This is the best way to ensure that you will have a valve the correct length for your cambox and spacing between cambox and head, particularly important if you are replacing a valve with a more obscure length. This type requires you undertake the final cutting to length yourself. If you wish us to cut the valve to length and machine the collet groove, please email seperately with order - expect £11 charge per valve, and turnaround time of at least 3 weeks.
£44.00 *

500cc SOHC 3/8" Stem Exhaust Valves (Sized - 4.590" Length, 1.735\750" Head)

Product no.: 0037b A11/143B
- Highest quality exhaust valves manufactured by G & S Valves. - Following Head Sizes available (check your original) : 1.735" or 1.750" (please state which head size when ordering). - standard Model 30\40 stem diameter : 3/8" - Stem length: 4.590", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years, however, this length - 4.590" is one of the most commonly used. If you have an original then measure that. If you are unsure please email me
£46.00 *

500cc SOHC 3/8" Stem Exhaust Valves (Sized - 4.650" Length, 1.735\750" Head)

Product no.: 0037c A11/143C
- Highest quality exhaust valves manufactured by G & S Valves. - Following Head Sizes available (check your original) : 1.735" or 1.750" (please state which head size when ordering). - standard Model 30\40 stem diameter : 3/8" - Stem length: 4.650", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years, although not the most common, this length - 4.650" was sometimes used, particularly with larger inlet valve heads. If you have an original then measure that. If you are unsure please email me
£46.00 *

500cc SOHC 5/16" Stem Exhaust Valves (Blank Stem) - For Model 30/ 30M

Product no.: 0038a A11/143B
- High quality exhaust valves manufactured by G & S Valves - Dimensions: 1.750" Head Size (1 3/4") x 5/16" stem diameter - Stem length: 4.900", left blank at end, so can be finished to your engine (standard practice for these engines) - CURRENTLY OUT OF STOCK - Contact me if you require these I may be considering re-ordering
£0.00 *

500cc SOHC 5/16" Stem Exhaust Valves (Sized) - For Model 30/30M

Product no.: 0038b A11/143C
- 5/16" Stem Exhaust Valve - but machined to size, to fit late 30's-40's 'Square' type head - Dimensions: 1.750" Head Size (1 3/4") x 5/16" stem diameter - Stem length: 4.530", collet grooves finish machined. I advise you check your own valve size to ensure this is correct. - CURRENTLY OUT OF STOCK - Contact me if you require these I may be considering re-ordering
£0.00 *

350cc SOHC 11/32" Stem Inlet Valves (Blank Stem) - For Model 40 (International)

Product no.: 0039a A10/142a
- Highest quality inlet valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.635" - standard Model 30/40 stem diameter : 11/32" - Stem length: 4.875", left blank at end, so these can be cut to the same length as your original, and then the collet groove machined afterwards. This is the best way to ensure that you will have a valve the correct length for your cambox and spacing between cambox and head, particularly important if you are replacing a valve with a more obscure length. This type requires you undertake the final cutting to length yourself. If you wish us to cut the valve to length and machine the collet groove, please email seperately with order - expect £11 charge per valve, and turnaround time of at least 3 weeks.
£44.00 *

350cc SOHC 11/32" Stem Inlet Valves (Sized - 4.590" Length, 1.635\655" Head)

Product no.: 0039b A10/142b
- Highest quality inlet valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.635" or 1.655" (please state which head size when ordering) - standard Model 30\40 stem diameter : 11/32" - Stem length: 4.590", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years, however, this length - 4.590" is one of the most commonly used. If you have an original then measure that. If you are unsure please email me
£46.00 *

350cc SOHC 3/8" Stem Exhaust Valves (Blank Stem) - For Model 40 (International)

Product no.: 0039c A10/143B
- High quality exhaust valves manufactured by G & S Valves. - Following Head Sizes available (check your original) : 1.655" (state which when ordering). - standard Model 30/40 stem diameter : 3/8". - Stem length: 4.875", left blank at end, so these can be cut to the same length as your original, and then the collet groove machined afterwards. This is the best way to ensure that you will have a valve the correct length for your cambox and spacing between cambox and head, particularly important if you are replacing a valve with a more obscure length. This type requires you undertake the final cutting to length yourself. If you wish us to cut the valve to length and machine the collet groove, please email seperately with order - expect £11 charge per valve, and turnaround time of at least 3 weeks.
£44.00 *

350cc SOHC 3/8" Stem Exhaust Valves (Sized - 4.590" Length, 1.635\655" Head)

Product no.: 0039d A10/143b
- Highest quality exhaust valves manufactured by G & S Valves. - Following Head Sizes available (check your original) : 1.635" or 1.655" (please state which head size when ordering). - standard Model 30\40 stem diameter : 3/8" - Stem length: 4.590", these valves already have the collet groove machined and are ready to fit. Note: Norton cammy valves were made in a variety of lengths over the years, however, this length - 4.590" is one of the most commonly used. If you have an original then measure that. If you are unsure please email me
£46.00 *

SOHC Hairpin Valve Spring Top Cup and Collet - Inlet

Product no.: 0278 A11/147I

CNC Machined top cup, to take tapered collets, to fit all SOHC engines. Note: These top cups are sold complete with a matching set of collets (pair) to fit a 11/32" inlet valve. Although these are made using the original taper, I have found many pattern collets have slight variations and do not seat properly. Therefore these top cups have been machined with exactly the same taper as the collets and are sold as a matching pair.

£17.50 *

SOHC Valve Spring Top Cup and Collet - Exhaust

Product no.: 0279 A11/147E
CNC Machined top cup, to take tapered collets, to fit all SOHC engines. Note: These top cups are sold complete with a matching set of collets (pair) to fit a 3/8" Exhaust valve. Although these are made using the original taper, I have found many pattern collets have slight variations and do not seat properly. Therefore these top cups have been machined with exactly the same taper as the collets and are sold as a matching pair.
£17.50 *

SOHC Valve Spring Top Cup and Collet - Manx

Product no.: 0280 A11/147M
CNC Machined top cup, to take tapered collets, to fit all SOHC engines. Note: These top cups are sold complete with a matching set of collets (pair) to fit a 5/16 Manx Inlet or Exhaust valve. Although these are made using the original taper, I have found many pattern collets have slight variations and do not seat properly. Therefore these top cups have been machined with exactly the same taper as the collets and are sold as a matching pair.
£17.50 *

SOHC Valve Spring Top Cup Plate

Product no.: 0284 A11/725
CNC Machined top cup plate, with distinctive ears, which retain the hairpin valve springs. These valve spring retainers fit all top cup plates (sold seperately) and are milled from solid. Unlike the originals (which were made from flimsy pressed steel and wear badly - with obvious consequences), these items are machined from solid EN24T and are extremely tough and hardwearing. However, these have proven very difficult to make with many machining operations and occasional broken tools (we hate doing them!), which is reflected in the fact they are not cheap - but they are nice. 15/12/12: Now back in stock, and we have managed to keep the price the same as before!
£22.00 *

SOHC 11/32 Inlet Valve Collets - For Model 30/30M - Pair (to fit one valve)

Product no.: 0040 A11/150
- Valve collets to fit 11/32" diameter valves (as shown above) - collets come as a matched pair. - They come still joined, so they cannot be mistakenly mixed. When you receive them, just break them apart with a screwdriver and carefully file the small section that joined them.
£8.00 *

SOHC 5/16 Valve Collets - For SOHC/DOHC Manx - Pair (to fit one valve)

Product no.: 0040b A11/150M
- Valve collets to fit 5/16" diameter valves (as shown above), as fitted to late SOHC and early DOHC Manx Nortons - collets come as a matched pair, state which diameter required
£8.00 *

SOHC 3/8 Exhaust Valve Collets - For Model 30/30M - Pair (to fit one valve)

Product no.: 0041 A11/151
- Valve collets to fit 3/8" diameter valves (as shown above) - collets come as a matched pair, state which diameter required
£8.00 *

SOHC International Type Hairpin Valve Guide Bottom Collar

Product no.: 0318 A11/148

This is an identical reproduction of the valve guide bottom collar used on the inlet valve of Norton Internationals, and is used to hold the hairpin valve springs. 

£29.00 *

Norton SOHC International Hairpin Valve Spring - Set of 4

Product no.: 0323 A11/144

Hairpin valve spring manufactured to exactly the same specification and shape as the orignal type fitted to Norton International Model 30\40 engines. These are manufactured by a well known and reputable spring maker, who has made similar hairpin valve springs for other engine types. A set of original (new old stock) Terry's International valve springs was used to provide the pattern. Photo shows new springs below and original spring at the top. Price is for a set of 4 springs - which is required for one engine

£55.00 *

Norton SOHC Manx Hairpin Valve Spring - Set of 4

Product no.: 0324 A11/144M

Hairpin valve spring manufactured to exactly the same specification and shape as the orignal type fitted to Norton SOHC Manx Model 30M\40M engines. These are manufactured by a well known and reputable spring maker, who has made similar hairpin valve springs for other engine types. This type which were often seen fitted to early Manx engines are exactly the same as the Norton International type, other than they have a slightly smaller eye diameter. However, in all other respects they are identical to the Norton International types. I am not entirely sure why this second type of spring was used, and have talked to Stu Rogers about it, who cannot shed any light on it either. We can only assume that the slightly smaller eye meant fractionally less metal, and therefore a fractionally less amount of reciprocating weight - although the saving must have been minimal! I do not see any reason why either type could be used with either engine variation - the choice is up to you! Photo shows new springs below and original spring at the top. Price is for a set of 4 which is required for one engine

£55.00 *

OHV (ES2/Mod18) and SOHC CS1 Coil Valve Springs - Set of 4 Springs

Product no.: 0677 A3/145+6

High quality (UK manufactured) coil valve springs to fit Norton OHV single cylinder models (ES2 and Model 18) from 1930's - 1950's as well as SOHC Norton Inter and CS1 engines from the early 1930's fitted with coil valve springs (rather than the hairpin valve spring engines).  Price is for a set of 4 springs (i.e. enough for one engine)

£39.00 *
In stock

OHV (ES2, Mod 18, Mod19) and (Part) CS1 Valve Guide - Phosphor Bronze

Product no.: 0676 A3/140

- Phospher bronze valve guide to fit Norton OHV engines - ES2, Model 18, Model 19, Model 50 etc.  May also fit Exhaust for 1930's CS1 - please check for this model. Price is Each

 

£14.00 *
In stock

Early Mod 30 & 40 / CS1 & CJ / ES2 & Mod 18 Coil Valve Spring Bottom Cup - Each

Product no.: 0672 3079

- Coil Valve Spring Bottom Cup to fit early SOHC (coil spring variant) Model 30/40 International, CS1/CJ as well as all Norton OHV models

£11.00 *
In stock
*
Recommended Retail Price, plus delivery
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