14 HP

October 14th, 2017 Leave a comment Go to comments

The Armstrong Siddeley 14 horse-power car


Armstrong Siddeley introduced the 14 HP car in 1923 as the lowest price model in the range. The most obvious distinguishing feature is the that it has a flat, rather than the V-shaped radiator used on the 18 and 30 HP cars. It also had a four cylinder engine and was initially only available with a touring body.


Armstrong Siddeley 14 HP Mark 1 car


Armstrong Siddeley 14 HP announcement leaflet 1923Armstrong Siddeley 14 HP 1923 - front & side views

Armstrong Siddeley 14 HP 1923

This is the Preliminary Announcement leaflet published by Armstrong Siddeley in July 1923 to promote the new 14 HP model. The leaflet described the Armstrong Siddeley Four 14 as “a full sized touring car for family use at a price which makes it a better investment than any imported product”.

The leaflet went on to say “Equipped with a four-cylinder engine with overhead valves, it will climb most main road hills without change of gear, and run at a good average speed with a full load… Petrol consumption averages 26 to 28 miles per gallon… Its designers have given particular attention to the inexperienced. The points needing attention or adjustment have been reduced to a minimum. Steering and controls are exceedingly easy. The petrol tank holds sufficient for 200 miles.” The engine size was under two litres (1852cc).

The description of the coachwork was “Designed on the most modern lines with low, deep seats specially constructed for comfort. Finished in standard mole colour and upholstered in real brown leather with pleated cushions. Fitted with hood and side curtains extending to windscreen and opening with doors, giving protection against all weathers. Adjustable front windscreen with two planes. Fibre mat to front and pile carpet to rear floorboards.”

The price was 400 pounds, plus 25 pounds for special extra equipment.

Armstrong Siddeley car 14 HP 1923Armstrong Siddeley 14 HP advertisement September 1923

This is an early advertisement for the 14 horse-power car showing the tourer body. The advert stresses the wide track and high ground clearance, which made the car suitable for the poor roads in colonial countries. It also mentions the “name and fame” of its makers and “experience, resources and reputation of the world-renowned engineers, Sir WG Armstrong Whitworth & Co Ltd” – all designed to convey that this was a quality car even though it was much cheaper than the 18 and 30 HP models.

This is the view of the dashboard and controls from the instruction book for the Mark 1 Armstrong Siddeley 14 HP car. Note the central control, labelled Armstrong Siddeley, with the ammeter, ignition switch and light switch. The gear lever and handbrake are in the centre of the car. The petrol cap is on top of the scuttle-mounted petrol tank. The Sphinx sits proudly on the radiator.

Armstrong Siddeley 14 HP dashboard

Armstrong Siddeley 14 HP 1923-25

The 14 HP was usually advertised with a full complement of passengers to promote its family appeal. This is the image used by the company in July 1924. This may have been drawn by Guy Lipscombe, who was an early motoring artist employed by the Motor. He is particularly well-know for the famous First World War poster “Our Flag”. By 1924 the price of the basic tourer had been reduced to 360 pounds (though it was 385 pounds with additional equipment) and the 14 HP was also available with the following bodies: two seater and dickey (360 pounds), saloon (480 pounds) and Landaulette (505 pounds).

Armstrong Siddeley 14 HP tourer car

Armstrong Siddeley 14 HP touring car 1924

Armstrong Siddeley 14 HP Mark 2 car

Armstrong Siddeley introduced the Mark 2 version of the four cylinder 14 HP car in 1925. This involved many improvements to the original design, particularly the introduction of a new chassis with four wheel brakes and semi-eliptic front and rear springs, to replace the cantilever springs used on the Mark 1 car. The improved chassis enabled the company to offer a wider range of body styles.

Armstrong Siddeley 14 Mendip coupe 1925

Armstrong Siddeley 14 Chiltern coupe

Armstrong Siddeley 14 HP coupe cars 1926

These are the two coupe models: the Mendip and the Chiltern. The former was the lower cost model, costing 300 pounds, with room for two or three people. The Chiltern was a more expensive model, at 425 pounds, with a Dickey seat and leather hood. Both models are sometimes referred to as a “Doctor’s coupe”, reflecting the popularity of this design with doctors and other professions.


Armstrong Siddeley 14 HP Cotswold tourerArmstrong Siddeley 14 HP Sandown tourer carArmstrong Siddeley 14 HP tourer cars 1926

These are the two tourer bodies available on the 14 HP chassis. The left hand model is the Cotswold tourer – a full five seater car which was supplied with a hood and side screens, as shown here. Most of the surviving vintage 14 HP cars have this popular body style. The Sandown tourer body cost 40 pounds more when new and was made in smaller numbers – I don’t believe any of these models survive to today. The Sandown was the nearest the 14 HP got to having sporting credentials, with sloping doors and a slightly more raked steering column.


Armstrong Siddeley Grassmere saloon 1926Armstrong Siddeley 14 HP Broadway saloon car

Armstrong Siddeley 14 HP saloon and landaulette cars 1926

On the left is the Grassmere Three-quarter landaulette which had an opening section at the rear, probably with a leather hood, for the passengers to use in fine weather, while the chauffer remained in the open in all weathers; this model cost 425 pounds when new. On the right is the Broadway saloon, which was 50 pounds less at 375 pounds when new. The Grassmere body gave the passengers plenty of headroom – so no problem wearing a top hat. Armstrong Siddeley also made the Lynton saloon landaulette on the 14 HP chassis with an opening hood at the rear. This model cost 425 pounds when new. The saloons were quite noisy, especially when fitted with the crash gearbox, and they were heavy bodies for the chassis and engine size.


Armstrong Siddeley 14 HP Chiltern coupe

The Chiltern coupe with the hood down. This 14 HP car dates from 1926 and is remarkably original condition, complete with leather hood. The body was made by Holbrook Bodies Ltd Coventry.


14 HP Armstrong Siddeley Chiltern coupe with dickey seat

Note how the original leather hood folds down; still in excellent condition in 2014 after 88 years. The dickey seat lifts up to reveal a simple seat.

1926 14 HP Armstrong Siddeley with coach built coupe body by Salmons and Sons photographed at ASOC rally 1971-2.


Armstrong Siddeley 14 HP dashboard

Armstrong Siddeley 14 HP dashboard 1927

Armstrong Siddeley 14 HP – driver’s view

The pictures here are from handbooks for the Mark 2 cars: the left image from around 1926 and the right image from mid 1927.

The controls are A Petrol tap, B Choke, C Dynamo and ignition switch, D Lamp switch for side and head lights, E Ignition control to advance and retard the magneto, F Oil pressure gauge, G Steering wheel, H Throttle lever, I Horn button, J Handbrake, K Electric starter, L Gear lever, M Clutch pedal, N Brake pedal, O Accelerator pedal, P Ventilator. By 1927 the throttle lever behind the steering wheel had been replaced by a slow running control to the right of the steering column. Also visible in this image is the petrol gauge on top of the scuttle-mounted petrol tank, the windscreen wiper on top of the windscreen, which was operated from the gearbox, and the Sphinx mascot on top of the radiator.


Armstrong Siddeley 14 HP 1927

1927 Cotswold tourer photographed in North Yorkshire in 2012 with hood up.


The 14 HP model featured prominently in the company’s announcement of the 1927 range of cars, here picked up in article in The Motor in October 1926.

Armstrong Siddeley 1927 model range

The Armstrong Siddeley range of cars for 1927

This is the Lonsdale saloon from an advertisement dating from around 1928 – chauffer-driven on a country tour.

Armstrong Siddeley 14 HP saloon car

Armstrong Siddeley Lonsdale saloon 1928

Armstrong Siddeley 14 HP Saloon

Armstrong Siddeley Fabric Saloon as shown in catalogue issued in 1928 showing models for 1929

1929 was the last year that the four cylinder 14 HP was offered for sale and this catalogue shows the six cylinder 15 HP with the same range of bodies: 2-3 seater coupe, tourer, four light and six light fabric saloons, Weymann saloon with drop head, coach built saloon and coupe. These models were available on the short 20 HP chassis as well.

  1. andrew hyden
    April 15th, 2012 at 08:52 | #1

    It is well known that almost 14,000 cars were produced between ’23 & ’29. The lowest chassis number that I have heard of is 15666 and the highest 27390. Do you have any details of chassis range built in each year? One is often asked “What year is it” and it is difficult to give an accurate answer.

    • Admin
      May 17th, 2012 at 21:59 | #2

      Have a look at Bill Smith’s book on Armstrong Siddeley as he lists chassis and production numbers for each year. 1925: 18077-20076; 1926 to 24601; 1927 to 27211; 1928 to 29301; 1929 to 29551

  2. gerry skeath
    December 16th, 2013 at 01:20 | #3

    I have been looking for an engine for a 14hp for years—-any chance anyone has one for sale

  3. November 8th, 2014 at 22:00 | #4


    • Gordon
      November 22nd, 2014 at 09:12 | #5

      Hello The firing order is 1, 2, 4, 3.

  4. gerry griffin
    July 31st, 2015 at 11:57 | #6

    Hi,I am restoring my 1926 14/4 and am in need of a camshaft as mine is badly worn. Any help with a good camshaft or advice as to where I might get mine repaired /rebuilt would be much appreciated. I am based in Dublin. Gerry Griffin

  5. Ken Barnett
    January 14th, 2016 at 06:27 | #7

    Having just purchased a 1927 14 that is essentially running but missing various bits and pieces and came with an earlier handbook I was convinced that the steering column wasn’t the original given that there was no throttle control / linkage. The illustration of the dashboard taken from the 1927 handbook has solved the mystery! Very useful. Now: To the next mystery! Thanks

    @gerry griffin

  6. Ken Barnett
    January 14th, 2016 at 06:31 | #8

    @gerry griffin
    Recently talking with an owner of two 14hp cars in South Australia – one of his cars is a supercharged special! He commented that the cam shafts appear to wear because the lobes are somewhat narrow, and when he rebuilt the engine in the special he had the camshaft modified by a specialist in such matters, with noticeable improvement in performance. Not sure if that is helpful – by now you’ve probably sorted the problem. Cheers Ken

  7. Cornelis
    October 2nd, 2016 at 17:53 | #9

    Haar,does anyone knows what thecode DA or EA or FA stands for with the 14 HP 6 Cylinder 1666 cc engine?
    It has a Zenith 30 VIG carburator

    Thanks Cornelis

  8. Cornelis
    October 17th, 2016 at 20:43 | #10

    Hay,don’t know if you solvee your camshaft problem,but there is a shop in the Netherlands mail is info@inducam.nl. Hurksestraat 18-n 5652 AK Eindhoven. They weld the worn places and regrind it,after straitenong if needed.
    I don’t know about costs.
    My camshaft is badly worn to and I intend to let them do the job.
    Another shop in England is. http://www.newman-cams.com.fhey Can make a New one,for a 6 cylinder about 850 plunderen ex VAT.
    Good luck@Ken Barnett

  9. Nick Nowak.
    October 9th, 2017 at 07:37 | #11

    Hi. I am having trouble with my 1925 14hp, 1852cc Armstrong Siddeley. The engine won’t pull and I think that I might be a tooth out with the camshaft timing. I have adapted a vacuum gauge and the reading is very low which seems to indicate a timing problem. Does anyone out there know the correct valve timing, that is the opening and closing degrees for both the inlet and exhaust valves? Thanks in anticipation – Nick

    • Gordon
      October 12th, 2017 at 22:51 | #12

      Hi Nick The instructions in the handbook are bring flywheel to top dead centre, i.e. the line with letters D C 1 4 two teeth to offside of the line of the rear valve stem. Note 0 on the crankshaft sprocket and turn camshaft sprocket until 0 on it approximately faces the 0 on the crankshaft. Move the camshaft until No 1 (front) cylinder inlet valve is just opening and then wind chain round the crankshaft and camshaft sprockets. When the chain is tight it will be found that the inlet valve in No 1 cylinder is beginning to open over tdc, exact distance being variable. You can tension the chain by rotating the dynamo.

      Do you want advice on timing the magneto? I time my car with fully advanced at 16 teeth before tdc.

      Hope this helps. Let me know if you need more information. Gordon

    • Gordon
      October 22nd, 2017 at 22:39 | #13


      I’ve added a copy of the 1926 article on servicing and maintaining the 14 HP in the Technical section.

  10. Bernhard
    October 31st, 2017 at 10:58 | #14

    Hi, has anybody a proper timing advice for a 12hp engine ( 1.434 cc ) ? The handbook says 1/2″ before No.1 cylinder is on top dead centre. That leads to 24? or 12 teeth o the fly wheel. This seems to be very early or not ?


  11. Peter Hall
    July 27th, 2022 at 08:09 | #15

    Would it be possible if anyone can assist to please reply to my email address.

    • Gordon
      August 2nd, 2022 at 15:00 | #16

      Hi Peter

      I have sent an email to your address to make contact.


  1. September 13th, 2012 at 01:29 | #1