Mgb timing specs

Last UpdatedMarch 5, 2024

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5) in 1979, the model with 2-door roadster body and Line-4 1799 cm3 / 109. 214 . This revised timing was likely better for the single carb set up that came a little later and quite possibly helped with lower emissions as well. Apr 30, 2010 · For the earlier models with the timing marks at 6 O'Clock or the bottom of the crank shaft pulley you can use a product like this to make it easier in the future, but you have to get it right the first time: Useful product for early models => MGB Timing Tape Kit 1962-1974 For static timing watch this video: 5) . This block has been lined bored so I know that this can cause some slack. Apr 6, 2019 · information about the MGB and MGB GT classic cars including news and reviews, techs and specs – also updates on repairs, servicing and diy modifications I do on my own MGB Roadster. Hope this helps. 016 in (. It also made for less power as the poor MGB was slowly strangled. The power is produced by a naturally aspirated engine of 1. Sump to crankcase All models 6. The later car specs say 10 degrees at 1500 rpms, but I doubt that will be enough advance. Carburation: Two constant vacuum SU HIF6 carburettors, horizontally mounted. Crank timing dimple at 1. Eric, On the KC, the #1 intake should be open . Oct 29, 2020 · 584,591 posts viewed since Jan 2019. Try 13 and see if it pings under load, then back off from there. Apr 4, 2024 · Erratic or irregular timing light on the stroboscope at low engine speeds can have different reasons. Its gonna be WAY too retarded if yu follow factory specs, unless you've had it rebuilt with new advance springs. Specifications listing with the performance factory data and ProfessCars The 1973/1974 distributors are wildly different from the earlier one. Many had timing set at idle to 10 degrees, 36 degrees of mechanical, 24 degrees of vacuum. This could be different on your car, so check before doing anything by reading a service manual. Engine speed will slow down when you do this. 6 kW / 63 PS / 62. 2. 013", you have effectively advanced the cam timing because the valve will open sooner. If you have any additional information for the 45DM4 or any other MGB distributors please mail me. Afternoon Anthony. Power output: 137 bhp at 5,000 rpm. Cylinder side cover screws deep cover 18G/18GA 5. Visit my Facebook page here for more information: https://www. at Feb 7, 2015 · The specs I would like to have are: Cam Specifications - Lobe lift: base circle to max, inches - Lobe separation: intake centerline to exahust centerline, degrees - Timing events for intake and exhaust: 1. I've got a 1972 MGB Gt with high compression Static Ignition Timing : Dynamic Ignition Timing: 1971-1972 - 16º BTDC @ 1500 rpm; 1973-1974 - 11º BTDC @ 1500 rpm: Timing Mark Location: Notch on crankshaft pulley, pointers on timing chain cover: Distributor Make/Type : Contact Breaker (points) Gap. acmespeedshop. $602. $527. According to my Operation Repair Manual, assuming that the engine is unmodified and is as it left the factory all 18V847 engines are timed at 10 degrees BTDC at 1000 rpm. Rocker bracket nuts All models 25. Since then, he has owned more than 150 cars—none of them normal or reasonable—as well as numerous classic motorcycles and scooters. Directly from the M. the timing was off by 7 degrees. 36 to . Timing cover screws: August 2015 There are nine bolts around the timing cover of three different sizes - 3-off 1/4" x 3/8", 4-off 5/16" x 3/4", and 2-off 1/4 May 25, 2024 · Hi Super Duty. The best way to time an MG is to disconnect the vacuum advance, run the engine up to approximately 4000 rpm to achieve full mechanical advance and set timing to 32 degrees BTDC. (Static – engine OFF, NOT running). Ignition timing is the single most critical setting in tuning a car for performance and economy. ) Loose dizzy. Info on the 41599 came from Doug Keene, extracted from the 2002 edition of the Bentley Manual for 1975-1980 cars. Hydraulic tappets. ] Dynamic Ignition Timing: 2 ATDC [10 BTDC '78 ON FED. Feb 3, 2023 · 2022 MGB ATX 125 Adventure. I'm just guessing that from what i see on some other 'B' engines. Timing cover 1/4 inch screws 18G/18GA 6. The front vibration damper/pulley rotates clockwise, so the most clockwise Dec 23, 2006. 023″ on the std B series rockers, . Angle at max lift 5. information about the MGB and MGB GT classic cars including news and reviews, techs and specs – also updates on repairs, servicing and diy modifications I do on my own MGB Roadster. ) Sep 24, 2018 · The substitution of a five-main-bearing crankshaft in 1964 improved engine strength and smoothness and bumped output to 95hp and 110-lbs. 00 not adjacent. Oil pump to crankcase All models 14. If you're reading this now, you are in the MG forum. 4375:1 rockers, to get the #1 valve open . 41 mm) Rotation of Rotor: anti-clockwise: Dwell Angle: 60 +/-3 Mar 6, 2020 · First of all, high performance camshafts generally get higher HP at higher RPM. ) Cog wheels at distributor drive and camshaft worn. 4-cylinder: Crank pulley bolt lock washer. Specifications listing with the performance factory data and ProfessCars™ estimation, including acceleration times 0-60 mph, 0-100 mph, 0-100 km/h, 0 1979. 99. Leak lubrication to push rods, timing chain and sprockets, valve stems, distributor drive. " I have no idea what Moss says. Firewall, between RH hood hinge & fuse block. On street fuel (93 octane RON), I am able to run around 26 to 28 degrees max advance (I set it at 5000 rpm). Set your timing at idle w/o the vac advance to 10-14 BTDC. In practice, the idle timing is about ten degrees above static – around 20 Static Ignition Timing: 10 BTDC [2 ATDC CALIF. 050" Divide . Dec 10, 2014 · Note the setting at which pre-ignition is first heard at the target engine speed. So it's your responsibility to calculate how to time your cam. 9 in, wheelbase: 2311 mm / 91 in. SKU: LUF10006. 4375 to get . Mar 16, 2018 · Look at most MGBs from 75-80. 055", and turn the engine so that that valve just takes up that clearance, the TDC mark on the pulley should be at . That's 70 total under low load - from the factory". Carbs rebuilt with new seals, spindles etc. 41 mm) Rotation of Rotor: anti-clockwise: Dwell Angle: 60 +/-3 degrees: Ignition Coil Oct 9, 2018 · Timing a 1967 MGB. Can someone confirm that if the cam is a tooth off I can rotate it alone enough for it to exactly match the crank dimple. Vehicle Number Location. MG-Triumph Performance Engines, heads, SU carbs, engine rebuild kits, and more. 5". Saturday October 20, 2007 8:45 AM. Modified cam shaft specs. Power came from a 1. 8. Cylinder head nuts 18G/18GA 45 to 50. XPAG/TD up to Engine No 9407. There are 3 holes 5/16" UNF on the distributor side of the front plate. 2004 C4 Corvette Convertible. This is the only arrangement that my workshop manual shows. i had a toolmaker at work make a 7 degree offset crankshaft key to get the cam dialed in . 050" at 7° BTDC. Specifications listing with the performance factory data and ProfessCars™ estimation, including acceleration times 0-60 Jan 22, 2021 · But the polyurethane rubber bumpers affect values, and the rubber bumper GT V8 is worth slightly less than a MK1 example of the 1. 015 inch with the engine cold and the tappet resting on the back of the cam opposite the lobe. I'm guessing it would be about 10 degrees BTDC. A bit of help needed. This unit features overhead valve valve gear, 4 cylinder layout, and 2 valves per cylinder. 00 and cam timing dimple at 1. If the assumed lash is . Also, the distributor itself may have been modified. #3. facebook. 015 in (. The 1967 distributor has an advance of 20 degrees on the crankshaft. of torque. I'm far from an expert on timing, but make sure the "dots" are together, you're # 1 is at TDC AND the dizzy drive sprocket is in the correct position. Dec 23, 2020 · Archives. These pages contain specifications and measurements for the MGTD. This is because HP = constant x torque x RPM. Good luck, Rut. CAR SPECIFICATIONS - MGA 1600. PLEASE HELP SUPPORT MY MOTORING ENDEAVOURS! If you like MGB GT 72-74; VEHICLE IDENTIFICATION; Vin Plate : Vehicle Number Location : Body Number Location : Engine Number Location : Gearbox Number Location : TUNE UP; Rear Axle Number Location : Engine Firing Order : Valve Rocker Clearance. Most common: . 5 hp (SAE net) of power, 119 Nm / 88 lb-ft of torque, 5-speed manual powertrain offered since mid-year 1978 for Sep 28, 2019 · information about the MGB and MGB GT classic cars including news and reviews, techs and specs – also updates on repairs, servicing and diy modifications I do on my own MGB Roadster. 1" divided by 16. If you want the timing to remain the same after the conversion you will need to establish what the timing is now. I find 8* vacuum advance helps economy and keeps the plugs etc clean . from the Distributor Doctor. Oil Seal Timing Cover MGB, Spridget 62 to 74 Payen. 8 cui, 71 kW / 97 PS / 95 hp (gross) for North America . Setting ignition timing. The engine tickover increased alot which i re adjusted. The pickup cable clamps around the front spark plug wire (cylinder #1) and Apr 26, 2009 · T he 1977 MG B specs state that at idle (850 rpm) the timing mark should be at 5 degrees BTDC (before top dead centre), and for 1500 rpm at 10 degrees BTDC. Fill a grease gun with LM grease or a similar recommended multi-purpose Dec 6, 2015 · Big-end bolts 33 later models (RBB) oiled thread. I've read other forums, and the big green book, but I but still have questions. Then use the top bolt behind the top of the tensioner spring to hold the spring against the chain in th top hole. MG MGB Technical - Correct Dynamic Timing. " Some of the late model distributors (41370, 41491) go as high as 41* at 4800 rpm, some higher. VEHICLE IDENTIFICATION. 198 . You posted this is the Forum Happenings forum. May 25, 2021 · The biggest thing you want to pay attention to with this is the sequence, then cam retaining nut should always be torqued first, I cheat, I use my Makita electric impact wrench that maxs out at about 60-65 foot pounds, and a drop of loctite (no lock tab). com/BarrowMotorcycleSales Thanks! Mar 20, 2020 · Andy Reid's first car, purchased at age 15, was a 1968 Fiat 124 coupe. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of MG MGB (man. Note: These pages were scanned with OCR technology and may contain errors. Unscrew the tops of the carburettor dashpots, lift out the damper assembly 'A' in Fig. Second, I assume you still have the servo installed, hence a "stubby" manifold. Because I don't feel a need to set the timing more times I'd go with the offset (woodruff) key rather then with a vernier gear. Mar 1, 2016 · Re: distributor, timing and a supercharger. 050″. 000" 2. In the MGB you can set your initial timing a number of ways. 265". 2 in, width: 1521 mm / 59. I don't recall at what rpm the cetrifugal advance reaches all-in but it is in the neighborhood of 3500 rpm. Engine # 18V837z. Menu Specs datasheet with technical data and performance data plus an analysis of the direct market competition of MG MGB in 1964, the model with 2-door roadster body and Line-4 1799 cm3 / 109. Tightening torque is 6 ft lb for the 1/4" screws and 14 ft lb for the 5/16". Heating / Heater. 63. Carburetor - The supplied SU HS6 carburetor has been pre tuned and jetted for a supercharged MGB with a stock engine. Edited 1 time(s). The crankshaft is supported by five bearings. Oil the carburettor controls. Repeat the above for the next target engine speed. Erik, "I read some that stated 32* advance at 3500 rpm and others said 4000 rpm. it is crucial that always get the cam retaining nut taken care of first, as if you are done with the project, because if you make May 7, 2008 · As it so happens, I have a mildly modified 1500 Spridget with 10:1 compression, Euro-cam specs, 2-1/8" race carb, mild port matching, header, etc. centrifugal advance at what rpm. Find a tabulation of torque specifications for Unified Standard threads of various grades in UT-120 in the Universal Tech section. 45d distributor, HIF4 carbs, new NGK BP6ES plugs, new Accuspark 3ohm coil, new leads, new distributor cap and points. profile name. Haynes calls this 'later arrangement' but it still has the pointers below, but additionally at 15 and 20 degrees BTDC (Haynes). Engine, horsepower, torque, dimensions and mechanical details for the 1978 MG MGB. the 1800CC MG B Series engine, that I've been able to find. Avg. 1967 MG-B with a 25-D distributor. Midget (Series "TD"), Issue 3 (Export) 78690 -- 1/53 Workshop Manual. 1978 MG MGB technical specifications and data. Rotate the distributor clockwise to advance spark timing. pdf A downloadable version of this special tuning booklet with a lot of interesting information how to tune and modify …. If you're running a weber downdraft, your decel valve might be leaking. 9 x 71. Valve Operation: Single camshaft chain driven from crankshaft operated by pushrods and rockers. Spark Timing Adjustment: If you do not have a timing light you can sill find a good setting for the spark timing. Full advance too soon or too much total advance can lead to detonation and engine damage. So I need to adjust 4. Jan 17, 2024 · i replaced my stock cam at 138,000 miles due to excessive wear on the lobes. 020" 3. Rut, '60 Bugeye, '70 MGB, '62 TR4, '66 TR4a IRS, '67 TR4a IRS, '68 TR4a IRS, '72 TR6. $6. 8-liter inline-four fed by a pair of tried-and-true SU carburetors–enough for a top speed of 100 Downloadable MGB Special Tuning Guide. >>3/8" = 35-45 lb-ft. Jul 9, 2017 · by Vic Butler » Mon Jul 10, 2017 1:24 pm. Body Number Location. His second, obtained by spending his college savings fund, was a 1966 Ferrari 330 GT 2+2. and would give a max. Do this at 1500 RPM, then at 2000 RPM and finally at 2500 RPM. Jeff Schlemmer — Posted on The MG Experience. Standard MGB is in the range of 170 – 180psi (hot engine, open throttle). For race fuel (in my case, Sunoco GT 100 unleaded), the engine can tolerate a max advance Oct 31, 2014 · by Paul Hollingworth » Sat Dec 04, 2021 10:57 am. May 19, 2024 · Also, DCOEs like a bit more advanced timing at idle than 78 specs. 38 mm ) cold: Idle Speed: 850 rpm 18V, 900 rpm 18GF, 18GH, 18GJ, 18GK: Static Ignition Timing : Dynamic 257 . The easiest and most common way is to use an inductive pickup timing light. XPAG/TD/2 from Engine No This is the first of a series of articles on basic tuning techniques to help you maintain your car to original factory specifications. Timing at normal operating speed, approximately 3000 to 4000 rpm, is. electric facet-style fuel pump, new unleaded fuel. Menu curve your distributor has before setting the initial timing. The thrust is taken by the centre main bearing. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of MG MGB in 1976, the model with 2-door roadster body and Line-4 1799 cm3 / 109. Opening angle at 0. Goleta, CA 93117 1-800-642-8295 • FAX Pressure lubrication on main bearings, big ends, camshaft bearings, hydraulic tappets, connecting rods and rocker shaft. Timing is more critical on a supercharged engine. Timing cover 5/16 inch Torque specs shown in the shop manual are the critical ones. ft. 8 degrees should be about textbook. Jan 6, 2011 · Jan 6, 2011. Sep 22, 2018 · Introduced in the fall of 1955 and powered by the new B-series 1,498cc engine, the MGA 1500 roadster was joined by a closed-roof Fixed Head Coupe with wind-up windows in the fall of 1956. Fuel / Carbs. 25:1. 1 mm. Compression Ratio: 8. Circumference is therefore 16. 050" 4. Make sure to search the car specs including engine performance options, interior upgrades, headroom, cargo capacity and more. 86. i installed a crane cam which had bigger lift and duration as there was not much to pick from 30 yrs ago. 064" by 1. Ignition advance check is 19/23 degrees at 3400 rpm. Menu May 24, 2015 · 4. It produces 84 bhp (85 PS/63 kW) of power at 5500 rpm, and maximum Dec 10, 2014 · A common and popular timing clearance for after market camshafts is 0. Since the ignition system must be in good order before any other systems, such as the carburetor(s), can be properly adjusted, we will begin with a brief discussion on ignition timing procedures. Engine will speed up when you Jul 22, 2023 · I have replaced the timing gears,chain and tensioner, using the marks as in the manual, I wanted to just make a thorough check. Acme Speed Shop - Hap Waldrop (864) 370-3000 www. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of MG MGB in 1965 the model with 2-door roadster body and Line-4 1799 cm3 / 109. 016″ off the base circle of the cam lobe, that is the relavant figure to use for MG engines. If you are running twin SU's and still having issues after timing, check carb synchronization. 45 OHMS: Spark Plug Make/Type characteristic dimensions: outside length: 3891 mm / 153. Idle timing is not important. com. i used a degree wheel to dial in the cam according to the specs on the new cam card. Last edit at 2015-05-24 09:05 AM by Rique. This is an online automotive information provider of MG MGB 1979 specifications and features, equipment and performance including fuel economy, transmission, warranty, engine type, cylinders, drive train and more. The MGB GT is a rear wheel drive coupé motor car with a front placed engine, produced by MG. Mar 17, 2019 · The original factory MGB Owners Workshop Manual reprint published by Brooklands Books in the UK states: "The clearance must be set to . Jul 11, 2007 · John Twist demonstrates static timing using a 12v test light. 050" that the valve end of the rocker has to move . >>5/16" = 19-25 lb-ft. They normally like a fare bit of initial advance but less total advance, and all in early 2500-3000 revs . [5] Variants include the MGB GT three-door 2+2 coupé (1965 Static Ignition Timing: 10º BTDC (HC), 8º BTDC (LC) Dynamic Ignition Timing: 14º BTDC @ 600 rpm: Timing Mark Location: Notch on crankshaft pulley, pointers on timing chain cover: Distributor Make/Type : Contact Breaker (points) Gap. Measure the total advance at that speed, note it down. The manual says if you set the #1 inlet valve to 0. Sep 7, 2010 · Rotate the engine backwards (counterclockwise) to draw the oil into the oil pump. 050" 6. Classic Mini vacuum advance unit for 45D and 59d distributor. Otherwise apply general torque specs according to bolt size. Now you may reconnect the electrical power to the fuel pump and start the engine. If the engine has been modified, its requirements for ignition timing will probably be different from standard. The pulley is 5. ) Distributor Drive shaft (spindle) or its fixation in the block (sleeve) axially worn (was the case on my 2 B's) . Engine Number Location. The assumed lash tells you what that lobe was designed for - maybe some Ford. Bore/stroke: 88. Feb 16, 2024 · 6608. of around 5-10 degrees of vacuum advance. It has two banks of four cylinders each, which form a 90 degree angle. Yep the timing could change. MGB Supercharger System Installation Instructions For 1965 to 1967 MGB PART# 150-050 MOSS MOTORS, LTD. Home : $54,800. I'll leave a redirect in the Forum Happenings forum for a while. reference weights: base curb weight: 925 kg / 2039 lbs, gross weight GVWR: 1100 kg / 2425 lbs, more data: 1968 MG MGB automatic (aut. 8 pints (SAE90 Heavy Duty Oil) from dry. The timing marks on the timing cover. Special_Tuning_for_the_MGB. Mar 24, 2019 · information about the MGB and MGB GT classic cars including news and reviews, techs and specs – also updates on repairs, servicing and diy modifications I do on my own MGB Roadster. Capacity: 3,528cc. Splash feed to cylinder walls, small ends. 25" wide. 013. #2. $14. 4 Posts. Oil mist to valves and rockers. My timing light has an advance knob - you turn it until the pulley notch is at TDC, and read the advance off the scale on the knob. 021″ on std A series rockers. Cylinder side cover screws 18G/18GA 2. Oct 21, 2017 · They may have the timing chain off by a tooth or so giving you the symptoms you describe or the dizzy may have the wrong springs/weights in it messing with your timing. 8 litre capacity. Consult the original manual for accuracy. At the valve end this translates to . Add to Shopping List. GENERAL DESCRIPTION The cylinder block is cast aluminum fitted with cylinder liners. When i connected the timing light it was reading 20deg advanced!! instead of the recommend 10deg. Article Image gallery Valuation Specifications Profiles Recalls. Apr 10, 2019 · Started the engine and the gauge immediately read retarded. The timing marks span 25 degrees of the crank pulley. Modified engines may be quite a bit more than this, depending on compression ratio and camshaft type, and may even have less cranking compression than standard. Working backwards from 32 degrees maximum advance, the static timing should be 12 degrees. So, if you change the timing/duration on the camshaft to achieve the same torque, but at a higher RPM, you will have increased the HP. This is a few of the 'modified' profiles for cams usable in a. The factory setting were a good compromise for a standard car and if you set to that you wont be too far off optimum. The second major type usually started to advance at around 7-10 Hg/in of vacuum, giving a max. Following the path blazed by the two-seat MGA Coupe, the MGB GT was introduced in October 1965 (and in America as the MGB/GT, in April 1966). Mar 3, 2024 · The MGB featured an easy-to-use folding convertible top, independent front suspension, up-to-date looks and a usable trunk. 95. It is important to determine the number of the distributor to determine the max. Mar 2, 2019 · General Data. Soft top. 0445". Gallon of Gas : $0. On my car I found the instructions on a lable under the hood (where other emissions info Jun 14, 2023 · Probably beat to death here, need specs for a stock 67 B, original engine, rebuilt 40897 distributor. Runs fine, but just trying to find a chart to compare timing at different RPMs. Ignition. Aug 27, 2017 · Timing Chain Slack. 3) Specifications Review. Bulkhead, in front of heater. At this moment the cam has 0 degree key. That means that with stock 1. If there are 5 timing marks, then that's about 5 CRANK degrees per timing mark. 1978 MG MGB FAQs (show) 1978 MG MGB. 30 TO 1. Quantity. The slack in this brand new 1275 engine’s timing chain seems excessive to me (about 3/16 inch deflection or 5 degrees before the cam engages). 5" * 360 ~= 25 degrees. MGB GT V8 ENGINE. The metering rod, jet, and slide have The prong closest to the driver's side is TDC, each mark to the left represents 10 degrees in advance timing, I would suggest you use a dial timing light and time from TDC. 014 to . 5 to 5 degrees. 1. Engine: 8 cylinder in 90 degree V formation. 020 and you set yours at . of around 10 degrees of vacuum actuated advance. (High compression ratio raises it, “hotter” camshafts reduce it due Timing Marks. Suitable for all MGs 1946 TC → 1980 MGB with points ignition. The original MGB 18V engine had a single row timing chain that altered the timing to offer more power at the low RPM end. Once you get the baseline right, you'll want to power tune it. >>1/4" = 7-12 lb-ft. However, as BMC specified their cam timing at a lift of 0. Can't find this engine number in any of my books. 5 hp (SAE net) of power, 117 Nm / 86 lb-ft of torque, 4-speed manual powertrain for North America . Whether this is useful depends on how you drive the car. 1971 MGB GT. Dec 8, 2013 · Re: Setting ignition timing. These are just wags on my part, but it’s something I would check. I gapped the points, and set the static timing per John Twist's videos and it all went pretty well. Apr 2, 2006 · EVERY 3,000 MILES (or every 3 months if 3,000 miles not exceeded). This scheme usually had vacuum actuation that started to advance around 5-7 Hg/in. The optimum ignition timing at each target engine speed will be 1 – 2 deg less than the Aug 27, 2020 · Hans at Rimmer Bros shows us how to replace the points and condenser on a 1981 MGBGT and also sets the engine timing. Oct 20, 2007 · Engine Timing Explained. Sep 17, 2022 · I get the timing and the carb balance and mixture dialled in a lot closer to the mark on my 1980 MGB. Closing angle at 0. What I describe below is a first principles approach on determining the ignition set-up for your car, and may result in the need to reconfigure the distributor advance 1977 MG MGB GT. Other wise you will be starting all over again after the conversion. This weather-tight 2+2, whose classic roofline was Dec 26, 2019 · Austin Mini 123 Distributor A+ W/ Vacuum Advance. Where most of its contemporaries relied upon body-on-frame construction, the MGB featured a unibody. MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo. 3 and top up with SAE 20W50 engine oil to within 1/2 inch of the top of the pots (arrowed). A double-overhead cam, 1,588cc engine with two valves per cylinder gave the competition-themed 1958-1960 Twin Cam roadster and coupe their name and surprising May 1, 2019 · Does anyone have the timing specification for a '74 1/2 MGB. Cheers, Basil May 19, 2024 · Also, DCOEs like a bit more advanced timing at idle than 78 specs. 15 degrees is good for performance, and good to know you should be able to go that high. $1. I have had a 45 DCOE on my 77 B for 47 years and time the dizzy at 20 BTDC at 900 at idle. 064" to move through the lash and open the valve . Thank for support fellas. Classic Mini vacuum advance unit | 45D and 59d Distributors 1275cc. I am no expert on these cars – just a keen enthusiast – but I hope these posts will be of interest to others with a similar interest. I'm going to move you post to the MG forum (I'm guessing this is an MGB?). 123 Distributor A-series W/vacuum Advance. It was announced and its details first published on 19 September 1962. Jun 14, 2023 · Probably beat to death here, need specs for a stock 67 B, original engine, rebuilt 40897 distributor. More. 8 cui, 73 kW / 99 PS / 98 hp (gross) offered since mid-year 1964 for North America . Engine (270) Engine bay. Parts. May 17, 2019 · The top matk is TDC, each lower is 5 degrees. 440 Rutherford St. Use the bottom hole for the bolt that is in the tensioner spring. Most peoples cars are set too retarded. My apologies to the more experienced mechanics for bringing up such a well-worn topic. Parts Used: Contact Breaker Points: htt Step by step guide for setting up/tuning an MGB B-series engine? Car: UK market 1970 with a 1975 engine. Mar 19, 2015 · Re: Cam timing and sprockets. G. You should be good to go w/static timing. Once the pump is primed, disconnect the power supply to the fuel pump and turn the engine until your oil pressure gauge gives a reading. It seems MGAs had flat flanges, maybe early MGB covers were the same, and would benefit from elongated washers. The middle hole is left empty. Either way you will need a timing light. 8 cui, 46. On cars produced after 1977 the clearance should be . Aug 28, 2007 · Each point is 5 degrees. The MGB is a two-door sports car manufactured and marketed from 1962 until 1980 by the British Motor Corporation (BMC), later the Austin-Morris division of British Leyland, as a four-cylinder, soft-top sports car. Vin Plate. . The timing mark is on the pulley (vibration damper) It is a small notch, which will be more visible if you dab it with white paint or correction fluid, as will the timing arrows. Forgot where I got the spec, but set timing at 28 BTDC @ 2200 RPM, vacuum disconnected. ] Timing Mark Location: LH TOP: Distributor Make/Type: LUCAS 45DE4: Contact Breaker (points) Gap : Rotation of Rotor: COUNTERCLOCKWISE: Dwell Angle : Ignition Coil Make/Type: LUCAS 15C6: Primary Resistance: 1. I’m more used to MGBs where the timing chain has a tensioner unlike this A Series 1275 out of a Midget. Menu Aug 6, 2023 · Re: 1275 timing-confused. I advanced timing to max the vac reading well into the green zone then backed it off slightly. Sep 20, 2023 · Timing marks. You can get a guide price for any MGB variant by using Hagerty’s Valuation tool. With engine running at idle speed turn the distributor body anti-clockwise to retard spark timing. There are 5 jagged teeth spread out over about 1". The very best Mk1 Roadsters (1962-67) now can command up to £25,000, while usable projects can be had from £7000 or so. I've never seen any camshaft offset keys. Most Smog equipped engines (later years) used this Apr 28, 2021 · Manufacturer specifies 107 degrees timing. Classic Mini O-ring, for distributor drive spindle shaft. The earliest arrangement - pointers below, but only at TDC, and 5 and 10 degrees before (Haynes). Would like to know for sure which pointers are Feb 1, 2023 · Re: Fitting accuspark electronic ignition. It seemed alot of advance but the car Oct 5, 2016 · As you have a 69 MGB, the timing arrows are on the bottom on the chain cover at the front. MGB Torque Specifications Area of Use Torque (ft/lbs) Notes General Use Gearbox remote control cover to tunnel 44 to 46 All models Hydraulic brake pipe connection, 3/8 UNF 5 to 7 Hydraulic brake pipe connect, 7/16 UNF 7 to 10 Alternator shaft nut 25 to 30 All models Interior mirror special screw 5 All models The 41427, 41643, and 45DE and 45DM specs are from Doug Jackson's 'British Automotive' site and the 41264 from TDC Engineering. Menu Feb 28, 2020 · If you set an MG cam at ,020" of lash, it's going to be a noisy beast. eg hx wq oc lq gj fk vr eq sj