Right as production wound down, however, the Twin Cam hit its competitive stride in the U.S. and abroad. the internals, such as a piston hitting a valve. To hold the solid skirt aluminium alloy, convexed head pistons to the Denn schon im Mai 1959 erschien ein MGA mit einem 1,6-Liter-Motor, von dem es eine Standardausführung und eine De-Luxe-Ausführung gab.Auch dieses Konzept hatte keine lange Lebenszeit. Never caught up to the 911 but travelled down the road at 100+ for several minutes. August 1956, in a record attempt. gearbox ran very hot, and if its breather blocked up, the expansion of Well, this particular Twin Cam is a charmer. Oil fouling of spark plugs was often blamed on the spark plugs, but after the oil consumption problem was cured by later changes to the piston rings this was not a problem. Many push rod MGA racers build highly stressed super high compression engines without reserve as replacement parts are available at a reasonable cost. It was mistakenly believed that this was due to the tappets tilting and locking in their bores and the length of the tappet was increased from 1.25� to 1.50� at engine 1087. All fractures ceased and many engines were retrofitted with the new tappets. By 1959 the Twin Cam had been developed into a production model, transforming performance from “adequate to potent” according to contemporary testers. fitted to the Jaguar XK's. In 1962 Aaltonen's Tulip Rally car was powered by a 1622cc pushrod engine. The Twin Cam engine was based upon the standard 1500 B-series engine but extensively up rated and engineered. Philips was a strong MG supporter and wanted nothing but an MG, but he was aware that all the company had on offer was the aging TD. the vibrations. Autocar testers was obviously a poor one. Bill 'S' who races MGA Twin Cams in the USA. The piston rings were changed on several occasions with the latest changes being late in the production period at engine 2057. Features fan was of five blades, not the normal two or four of the other cars. Perhaps more important, Gott reported that for the first time, he felt that he had a car that could challenge the Porsches and Healeys. Brand New. After this time the Austin engine was not seen again. The coupes were a variation of the roadster and were not … From engine number 1523 the ignition markings were stamped on the distributor, (22-26 degrees advance at 3000rpm.) The drivers were instructed not to exceed 6800 rpm during the race. When the Twin Cam engine arrived in 1958, MG was finally able to deliver the power that MGA buyers had been craving for several model years. Twin Cam roadsters finished second and third in class in 1959 before landing one more podium in 1960—the same year that a modified Twin Cam coupe took class honors at Le Mans. He also extensively and enthusiastically rallied it from the mid-’80s up until 2005. Before the MGB took over for 1962, an MGA Twin Cam finished 14th overall and first in class at Sebring. casing carrying the new position for the distributor. At first it gave the MGA 68 horsepower, but output would progress to 78 horsepower. At engine number 315, the number of teeth on the gears on the half speed shaft and matching oil pump drive spindle were changed to reduce wear. To feed fuel to the two carbs, there was a high capacity, high pressure LCS single ended SU electric pump fitted, similar to that These were pushrod powered cars not Twin Cams though the engine blocks were 1622 castings under bored to 1588 and there were no water passages between the block and head so they could run without a head gasket. However this did not cure the problem and a second incorrect diagnosis was that the tappets were picking up aluminium from their bores and seizing, and so cast iron sleeves were fitted to the tappet bores at engine 1587. The engine was originally a BC16G numbered type but was later changed during production to BC16GB to differentiate it from the upcoming pushrod MGA 1600. took just 30 seconds. In my opinion the twin cam version of the MGA is equivalent to the ZR1 upgrade of the basic Corvette. 1956-1962 MGA Crossflow Aluminum Radiator (Fits: MGA Twin Cam) Brand New. The engine has fully floating What can you expect in return? The original MGA used other parts from the Z as well, such as the transmission and drum brakes. If, after suffering too much, MG would fit a normal ohv 1600 ( 1588cc) understand the requirements of, what after all, was a road-going racing Palmer had penned an outline of the engine he saw as suitable, but the spray hole was drilled in the rod end either, for bore lubrication. doubt this was because the car was being used by owners who did not But when he discovered that I worked for MG he gave me hell about the unreliability of Twin Cam engines and threw me out of the place.”. With the ending of works participation in motor racing one of the EX182 1955 Le Mans cars was taken for an outing at the TT at Dunrod in Northern Ireland. When the Twin Cam engine arrived in 1958, MG was finally able to deliver the power that MGA buyers had been craving for several model years. (and editor of "Morris Bull Nose Engines" book ,) Peter Seymour; and For racing use, the exhaust valves are a 2639cc 'C' series engined prototype Austin Healey 100/6 in the USA, in Experience with racing the Twin Cams over the years has led to the I bought it for 350 pounds on the "hire-purchase". The engine block was fabricated of cast iron and the cylinder head was made of aluminium. The oil consumption on early Twin Cam engines was extremely excessive. TC-300 - Twin Cam Engine GENERAL DESCRIPTION TC-300A - Twin Cam GOLD SEAL ENGINE TC-300B - THINGS THAT ARE BLACK on the Engine MG-282 - Remedies for possible complaints (csm) MG-288 - Remedies for possible complaints (Cancels MG282) (csm) TC-301 - CARBURETOR FLEX MOUNTS, … Oddly, an open MGA Twin Cam (index PMO 326), road tested by The Autocar magazine in its 18 July 1958 edition only recorded a 0-60 time of 13.3secs with the standing quarter mile of 18.6secs. head quicker, and was a common fitting to WW2 piston engined figher Two works MGA Twin Cams and four private entries—including the car pictured here-showed up for the 1959 Tulip Rally, an event that started in Holland, but made a big tour of France as well. The car prepared for the Today, driving a well-sorted MGA Twin Cam is nothing short of magical. They never did solve the piston burning issue that plagued the engines until after production ended. The Twin Cam was supposed to have been the crowning achievement for the MGA, which had debuted in 1955 to deliver a much-needed breath of fresh air for MG. The head carries two cast-iron camshafts, with Colour black with a two tone black/grey leather interior. The engine used a normal 1489cc cylinder block but with a bore of 75.414mm. The inlet valves are 1.6" | Posted in possible cause of the piston problems. 2 LE TWIN CAM est plus que fragile et difficile a entretenir vu la rareté des pieces et les prix pratiqués 3 Sauf si c'est pour faire de la course prends un MGA normale avec un moteur d'origine 4 si tu veux a tout prix une TWIN CAM, ben c'est 100 000€ sauf peux etre aux states mais faut y aller et la ramener (quoi que vu les élections que nous almlons avoir, emigre la bas). It is in fine condition, having been completely restored and sorted in 1986 by its former owner, Paul Channon. It was not a car to pose in, but The first 13 places went to 9 Ferrari's, 3 Porsche RS61's and a Corvette. (carberetors,) with pancake air filters and a cold air feed duct, on the Meanwhile the MGA was introduced to an excited public in 1955, using the There is a 1600 MGA pushrod engine and gearbox currently installed however the original engine and gearbox are included in the sale. engine for you. Retired from sale at http://www.ClassicarGarage.nl MG MGA Twin Cam, year 1960. two halves of BMC set about their own designs. In the summer of 1965 I drove along with my friend's MG TF from London to the Yugoslav coast. Later on, a 1600cc engine upped power to 79.5 horsepower. I have tried them on my race cars (uop to 1950 cc MGB motors) and prefer the 1 3/4" . Die MGA Twin Cam verfügt über einen sehr speziellen 1622 cm³ MG-Vierzylindermotor mit zwei obenliegenden Nockenwellen und einer Leistung von 108 PS. Very solid undamaged frame and a reasonably good body in need of the usual repair panels. This did not solve the problem and so it was decided to reduce the compression ratio to 8.3:1 which prevented the pistons from melting, but had not solved the problem, only masked it. This would normally lead to follow-on engine destruction. The 1959 running of the Alpine Rally, which linked famous mountain passes in Germany, Switzerland, Austria and Italy, turned grim for the MG factory entry when John Milne and Stuart Turner crashed their MGA Twin Cam. MGA Twin Cam Black with red leather Registered -1st March 1959 This is a certified genuine UK right hand drive Twin Cam This car is the most stunning vehicle that I have ever offered for sale The paint work is beautiful Combined with the rich red leather, it has got to be one of the best looking MGAs on the ... 99,999 25th Nov 2020 . The problems of the past have largely been overcome, and right now the MGA Twin Cam’s rarity and performance make these cars very much the Holy Grail of the model line. Een typisch kenmerk van de Twin-Cam is dat de kachel gespiegeld staat ten opzichte van die bij de modellen met de gewone motor. The MGA Twin Cam features a very special 1622 cc MG four-cylinder engine fitted with two overhead camshafts and a power-output of 108 bhp. Unfortunately, the company found itself just then under the newly formed British Motor Company umbrella. Helaas werd de Twin Cam nooit een commercieel succes en nadat er 2.111 exemplaren van gebouwd waren, werd in maart 1960 de productie stop gezet. Quatre versions améliorées de la MGA seront fabriquées et commercialisées, avec plus ou moins de succès: la MGA 1 500, la MGA 1600 et 1 600 De Luxe, la MGA MKII et MKII De Luxe et la MGA Twin Cam. MGA Twin Cam roadster for restoration with that beautiful engine already done. Despite the issues, the Twin Cam had its moments in the sun. Verkaufe auf diesem Weg eine Motorhaube für den MG A. Had they worked that out during production, chances are that the cars would have been very competitive with the Porsches and Alfas. The MGA was pleasing to the eye and fun to drive. It still sports a rally look, thanks to the added pair of auxiliary driving lights and the Tripmaster in the interior. They come with a price premium, however: Where MGAs sell for between $15,000 and $35,000–Hagerty says $30,000 for a No. De Twin-Cam modellen waren ook uitgevoerd met rondom Dunlop schijfremmen op alle wielen en kregen de zgn “centrelock disc wheels”. Motor magazine testers said 0-60 was in 9.1 MGA blev lavet med tre motorstørrelser. Apr 21, 2020 MGA 1500cc (September 1955 til Maj 1959) og MGA 1600cc (Maj1959 til April 1961). Coventry Climax. Again, the distributors had a vacuum advance from the MGA/ZB, (type 40510B,) but this was later deleted and replaced by distributor, (type 40718A,) with no vacuum advance. Drei Jahre später wurde ein neues Modell unter dem Namen Twin Cam vorgestellt. Preparation work had already been ongoing with a view to entering the 1956 Le Mans with a more streamlined MGA fitted with a Twin Cam engine and this car was given the project designation EX186. The enthusiastic press reports that followed meant that by the time the MGA made its world debut in September 1955 at the Frankfurt Motor Show, the public was already anxious and waiting. used, existed even in those days, a rev-limiting rotor arm. Distributor drive gears would wear rapidly if the distributor was not fitted in position exactly as described in the Workshop Manual. By Staff Writer INSIDE of the port. Although a privateer Twin Cam beat the works entries that year, this one, the results show, scored a DNF. Twin Cam'. It also carries the sprocket for the timing chain. After that B… On cars meant for racing, the SU's grew to H8 2" carbs. This problem was already well known to other engine manufacturers e.g. machined to take the Weber rubber 'O' ring from the 45 DCOE. The 1500cc, 1600cc, MkII, Twin Cam and 1600cc MkII De Luxe. I still have the number plate from the 1961 1000 mile rally run by the MG Car Club in NY. fitted. Later cars had the inner wing splash panels capable of being removed, (inner fender panels,) to give better access to those hidden components, with a front wheel off. seconds; Autocar magazine said 13.3 seconds. The form may have been advanced, but the underpinnings were trusted familiars since the suspension design was much like its T-series predecessor— and even shared a few parts. Then on a long downhill section I got the engine up to the 7000 redline, the speedometer was pegged at the 120mph limit. The exhaust manifold was on the efficient cross-flow configuration. C $604.78. The unit from the Austin office had been designed from first principles, on a clean sheet of paper. De MGA Twin-Cam. On early cars, numbers 504 to 531, the starting Capacity of the B-series engine was increased to 1588cc, connecting rods were strengthened, and special pistons were delivered in order to run a 9.9:1 compression ratio. their manifolds. Ken Miles and Johnny Lockett finished 12th overall and fifth in class, averaging 86 mph and recording a top speed of almost 120 mph on the long Mulsanne Straight. so the double overhead camshaft ( dohc) cylinder head was ideal. The MG, EX179, did 170mph, the Healey The Twin Cam outperformed the standard MGA, but it also cost more; it cost more than the competition, too. Mainz and Vicat-Cole gave their Twin Cam another go at the 1960 Tulip Rally, where they scored second-to-last in their class. Zero to 100mph This MGA featured a special twin cam engine fitted with double overhead camshafts. The engine feels best between 5000 and 6000 rpm. The MGA came to be used quite extensively in motorsport despite the fact that BMC ceased participation in racing after the 1955 Le Mans crash. The fractures continued until it was finally realised that the tappet material composition was incorrect. To fit the DOHC head to the 'B' series cylinder block, the heads studs were slightly repositioned and of a larger diameter. This leads the heat away from the Erfolgreich war der Twin Cam nicht mehr, nach 2 111 gebauten Einheiten wurde die Produktion dieser Variante 1960 eingestellt. Het identificeren van de MGA-1600 Twin-Cam roadster. The car also received disc brakes all around along with knock-off wheels. The chain could stretch in use and adjustment was very important. engine, it would rev quicker than some people could take their foot off ZB Production got the slightly upgraded 1500, and ran from 1956-1958. The engine was still fantastic for its day, and like many highly strung A 1588cc developement Twin Cam MGA beat MGA 1600. Nice article on the Twin Cam. diameter, and the exhaust 1.44" dia. MG se contera alors de versions plus poussées de son moteur culbuté pour redonner du pep à la MGA. The tensioners were aluminium and the threads could be pulled out by the constant whipping of the chain, after high mileage. driven, not chain driven as on the ohv engines, so rotates in the I put at least 3 quarts in. A cure that MG never opposite direction to the old camshaft. engine bay. Although the manufacturer had been slow to release a modern roadster, it countered that history with a most impressive introduction for the MGA, entering three prototypes of the car for Le Mans in 1955. 1958 MGA Twin Cam Roadster It was even documented by BMC themselves in the Special Tuning booklet for the pushrod MGA if 10:1 compression was used. Early cars used the MGA/ZB Magnette�s 4psi cooling system, but later this rose to 7psi. ratio of 9.9 to 1. MGA 1600cc blev også lavet i en opdateret version MGA 1600 MkII (April 1961 til Juni 1962). Interestingly, on the SU inlet manifolds, one securing nut is in the VB 16816 Neuruppin. It was fitted with a ribbed, cast aluminium alloy sump, cylinder head, and front They even tried them on the factory MGA Twin Cam race cars. The cylinder head, with steel valve seat inserts, although these are cast in position, was of The factory did make a mistake by forcing Thornley to produce the model in numbers before it was properly sorted out. In 1956, the first full year of production, the Abingdon factory was rolling out 300 MGAs per week. Rowing the big, four-spoke steering wheel takes a bit of work, but the chassis feels very stable in the corners and seems to beg for more. Both are set at a 40 degree angle in the head (80 degree included angle) giving a hemispherical combustion chamber, ( hemi-head.) I wanted a sportscar and saw a 1959 MGA for sale in London. Also, the required footwork takes a little while to learn. The problem was actually caused by the SU carburettors becoming lean due to the effects of engine vibration at certain RPM. This resulted in a normal oil consumption. Within MG, work started on evolved, wider prototypes based on the TD special. These can be recognised by a large 45 degree chamfer on the top edge. I was young and it took all my money to keep it going. The engine also had an unhealthy appetite for oil. to drive. Still, it awaited its ultimate coronation in the form of a truly sporting engine. Nice to see an article on my favourite car. Motorhaube MG MGA. By the time MG came up with a proposal for the MGA, the top brass at BMC had already been sold on the Austin-Healey 100/4 by Donald Healey. All SU cars had this problem, but those fitted Experience with racing the Twin Cams over the years has … At engine 2211 molybdenum was added to the tappet material. Om toch te kunnen voldoen aan wensen van klanten die meer vermogen voor hun MGA wilden, werd in mei 1959 de MGA 1600 geintroduceerd. The MGA Twin Cam engine was derived as an extensive modification of the Austin B-series 1500 cc pushrod engine with larger bore for 1600cc displacement and a slightly stronger crankshaft extended at the front end (and forever unique to the Twin Cam engine) and incorporating a "rope" style rear seal. No oil This would easily fit the current MGA 1500 gearbox and than the above problems. After all it was not the timing It was also a runaway success. 1600 and 1600 De-Luxe Although MG produced just those 2111 Twin Cams, the manufacturer delivered more than 101,000 standard MGAs. With the 88.9mm stroke this gave 1588cc capacity. The model quickly found success at Sebring, with three near-showroom-spec cars taking fourth, fifth and sixth in class in 1956; a Twin Cam won its class in 1957. I own #43 driven by Sir John Whitmore and Peter Riley in '61. All rights reserved. This shaft is gear These were pushrod powered cars not Twin Cams though the engine blocks were 1622 castings under bored to 1588 and there were no water passages between the block and head so they could run without a head gasket. Er zijn maar vijf verschillende types van de MG type A. Zero to 60mph was in 11.5 seconds ( factory figure,) and in 1958 that On retrouvera notamment des versions "coupé" et "cabriolet" de la MG type A. Today the basic push rod MGA's have been upgraded with MGB brakes, transmissions and engines so the advantage has disappeared. De 1500, 1600, MKII, Twin-Cam en de 1600 MKII De-Luxe. De drie belangrijkste MGA modellen kunnen gemakkelijk worden geïdentificeerd door hun grille, voor- en achterlichten evenals hun cilinderinhoud badge. Turned out to be simple - a vibration period that caused the float to jam and starve the engine. These were the normal angled split big ends type, but without © 2021 Motorsport Marketing. The slightly flexible joint that results cures The Twin Cam did an official 21mpg of petrol. Buy It Now +C $154.89 shipping. There are only five variations of the MGA. car. Es wurden allerdings in den zwei Produktionsjahren nur insgesamt 2.111 MGA Twin Cams hergestellt. the SU H6 bolt pattern. That’s what you’d call direct customer feedback. The MG TF preferred to cruise at around 65mph. Webers and relevant manifolds, for racing, did not have any nuts inside ZA 68bhp ohv engine. Deze MGA Twin Cam werd zowel als roadster als in coupé-vorm geleverd. MGA Car Cover. En avril 1960, le rideau tombe et la version Twin Cam est supprimée. the pinch-bolt little end arrangement of the normal ohv unit. Darüber hinaus zeichnet sich das Twin Cam Modell durch die speziellen ‘Centre-Lock‘ Scheibenräder, spezielle Sitze und natürlich die Twin Cam Bezeichnungen in der Nähe der Motorhaube und am Kofferraumdeckel aus. for. The only catastrophic engine failure was about 15 years ago when an over stressed original  bottom end fastener failed and a connecting rod put a whole in the side of the block. The short-throw lever is situated close to the steering wheel and makes the perfect partner in crime. Compounding that disadvantage was the fact that the MGA Twin Cam turned out to be a bit of a nightmare to own. MGA TWIN CAM TWIN CAM ADDITION TO THE MGA PARTS CATALOGUE Valves & Guides 012.210 Valve, inlet 012.211 Valve, exhaust 012.212 Bronze valve guides set, 8 pieces 012.213 Bronze valve guide, inlet 012.214 Bronze valve guide, exhaust Miscellaneous engine parts 012.216 Valve spring set, 16 pcs 163.072 Thrust washer, valve spring 013.226 Chain, timing 161.321 Nut, Rocker cover, chrome plated … Buy It Now +C $30.83 shipping. This chamfer was to allow BMC service mechanics to check if the change had been carried out by merely removing the camshaft covers. C $109.97. Fulfilling that promise proved difficult, however, as reliability problems cut short the career of the MGA Twin Cam: MG halted production partway through 1959 after building just 2111 units. | Never miss an article, Story by Johan Dillen • Photography by Dirk de Jager. This occurred at two specific engine resonant frequencies that (And before you scoff at the price bump, get a quote on a Twin Cam restoration.). MG offered the Twin Cam in both roadster and coupe form. At first glance, the Twin Cam engine more than delivered. This is the special 1950 cc engine I created for racing - always thought that the angled Jag style cam covers gave a nicer appearance than the flat ones on the Fords and Alfas. The Twin Cam eventually did well against the clock, too. Phillips’s MG TD special had to retire from the race at the eight-hour mark due to engine problems, but the effort had shown that the company was prepared to move away from its traditional, bulky approach to sports car styling and follow the lead already embraced by the competition. Furthermore, the Twin Cam model can be distinguished by the special ‘centre-lock’ disc wheels, special seats and of course the Twin Cam designations near the bonnet and on the boot-lid. ( Leaflet is BMC publication ADK1412.). It was driven by Canadian Ed Leavans, and  Alen Millar. Launched under the slogan “first of a new line,” the MGA was a clear departure from the old style. https://www.youtube.com/watch?v=S1KSasnUpR0. By the time MG got on top of the problems, the Twin Cam’s reputation was sunk. filled with sodium inside the stems. MG, Les commandes internet et téléphoniques seront traitées et expédiées normalement, cependant les délais de livraison peuvent se voir allongés au regard des circonstances. The Both cams are identical, apart from the timing slots; and machinery, demanded constant attention. but the second was within the rpm range often used. Motorlegend : Présentez-nous votre MGA Twin Cam, que vous avez, j'imagine, fait préparer. This also caused fouled spark plugs. Breathing was always the limit on any engine's power output, not lose this nut into the engine. The solution, use Webers, or have the SU manifold All you could see under the open bonnet was two massive, polished alloy camshaft 2 watchers . MGA Twin Cam The mean maximum speed was 113.5 mph, with a best of 114.0 mph. Updated January 2012 by Mick Anderson. I asked the garage owner if I could ‘borrow’ some of the suspension parts from one of these cars and replace them with new parts I would arrange to be sent out from England. There was no place for two competing roadsters within the extended family, so the MGA went on the backburner. That running of Le Mans was most memorably marred by tragedy when Pierre Levegh’s Mercedes-Benz 300 SLR took off into the crowd, killing 83 and injuring 170, but despite the pall cast over the event, the MGAs made their mark. If you look closely at the engine bay of #43 you can see the external water passage between the rear of the block to the head. No That still leaves plenty of revs for this engine to truly express itself, with the orange part of the tach only beginning at 6500 rpm and the redline itself marked at 7000 rpm-impressive for a 1959 car that normally wouldn’t be considered exotic. aircraft. | Wiltshire . Double valve springs are fitted. So successful was the design in improving the