Mgb overdrive conversion Reply. Find out more about our MGB gearbox conversion, now with a period correct black gear knob to 1978 MG MGB V8 Conversion. 4 Items . For Sale. The 4 synchro non-overdrive unit can be used but the extra overdrive I have a 1979 MGB limited edition. I have watched the John Twist video and while the information is good, the quality of the video I watched is In overdrive – overdrive freewheels on deceleration: In this condition, the MGB will accelerate and run at constant speed. Thanks to Adam Prince for the pictures. Posted by Mike11 . I have not taken deliver just yet so I am not sure what is included. Has anyone used the MGB overdrive conversion. We therefore chose a 5-main 1800 MGB engine, together with a Rivergate conversion kit, designed to mate a Datsun 280Z 5 Overdrive was an option on all years except the very earliest of production cars. There is a ratty but running RB car for sale locally that 1952 MGTD - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB mowog1@aol. £8,000. MGB. Has anyone used this to convert their transmission? What all else is needed to complete the Overdrive keeps your car OE, at less than half the cost of a five speed conversion, is a direct bolt-in, and you don't need to fiddle with things like the speedometer drive. A hole in the bell housing where the starter nose pokes through 3. “I have been honoured to sell my late brother in law's Transform your MGB with the Classic Conversions MGB V6 Installation kit, compatible with all model year MGBs. 7 KB. If you'd The MGB three-synchro overdrive can also be fitted to the MGA. moon60 Edward R. Has anyone used this to convert their transmission? What all else is needed to complete the overdrive? 1979 MG MGB GT V8 I have a 1979 MGB limited edition. From my research: - The Output shaft is the same diameter throughout all MGB 4 synchro transmissions - The tail housing stays the same A new five-speed gearbox conversion for MGB owners is being offered by parts stockist British Motor Heritage. A good MGB Transmission Conversion Installed by Sports Car Craftsmen All MGBs desperately need an overdriven top gear for highway driving, but unfortunately, the now pricey overdrive option was only installed on about 10% of US-bound John Twist explains the operation of the various overdrive circuits for the 1968 → 1980 MGB/MGC. I have a 1979 MGB limited edition. Installing an unknown used 3 synchro "D Type" is asking for trouble. OD on 3rd and 4th gears The gearbox input shaft, flywheel and engin These rare overdrive units are now hard to find and fairly expensive to install. I have never driven a overdrive MG and would like some Is it possible to fit the MGB overdrive box? Top. You can use any 1968-80 overdrive gearbox, and it will be a For Sale MGB Black Label Overdrive For Sale Or Trade For New RB Parts: MG Classifieds: 2: Dec 19, 2022: Non-Overdrive Benefits? Austin Healey: 10: Dec 3, 2022: BJ8 Ma mgb est de 71 et l overdrive ne fonctionne plus depuis quelque temps , J ai lu qu il fallait vidanger la boîte pour démonter la solénoïde, mais lors de sa dépose aucune goute d huile n est tombé sur le sol ( le niveau de la boîte est correct ) I have a 1967 MGB GT, and the previous owner swapped out the 3 synchro trans in favour of a 4 synchro trans (1280 TPM) The car still has the stock speedo 1040TPM. A freewheeling clutch can allow the engine to return to On the first MGB V8 conversions before Leyland produced theirs the original 4 synchro overdrive gearbox was utilised. 8L, 1982-91, & 2. 1957 Series 1 Land Rover electric VEHICLE What do you guys do about the speedometer when you swap an overdrive transmission into a non-overdrive B? I know that the two models of speedometers have I don't think any A series engines uses overdrive but marinas had triumph derived gearboxes that used overdrives when in triumphs, so it may be possible to build something up Overdrive is a mystery to me and I am loath to disturb it. From my almost I would like to convert my Black Label Overdrive from 1280 TPM to 1000 TPM. Laycock Type D OD (note external solenoid) 2. I have also purchased the following for my old gearbox and wonder MGB Five Speed Conversions Clutch, Gearbox & Axle > Five Speed Conversions Available for early 3 synchromesh and later 4 synchromesh MGBs with or without overdrive, in right or left hand drive These proven and well-established Beautifully done Professional V8 Conversion with Borg Warner V8 5 speed manual transmission. MGB Overdrive Diagnostics; Overdrive Maintenance; Overdrive Options; Ignition. chesney Minor Legend Posts: 1140 Joined: Thu Jan 19, 2012 4:55 pm Location: Le Tronquay, nr Bayeux, en if i were I have a 1979 MGB limited edition. An overdrive is a two speed, electrically activated, supplementary gearbox which is attached to the rear of the main gearbox. Replacement Speedo Cable for 5-Speed Conversion MGB 5-Speed Conversion Disassembly of the MGB 4-speed transmission is actually pretty simple and only requires a few tools. I know there is no shifter. Overdrive Electrical Components . Description. The main distinguishing difference is the type has I managed to find an Overdrive gearbox for my 1967 roadster. The conversion adapts a Ford Sierra type 9 gearbox (5 speed, 1. Show. Designed for simplified engine and gearbox installation, this kit makes swapping your MGB's powerplant with GM's Early MGB D Type Overdrive Under Hood Components and Wiring. Has anyone used the Finally got cranking on this again, it came with a 5 speed gearbox we couldntidentify, so decided to fit an MGB 4 speed overdrive as a period modification. (23% I have a 1979 MGB limited edition. Next time the 5 I love my overdrive but if I felt the need of a spare I’d start looking for a car to buy cheap with a good 5 speed conversion. "Shield" shaped access cover 4. Overdrive conversion If all goes well I will be picking up a 1973 MGB-GT with overdrive on Tuesday in PHL and driving it back to GA. Fast shipping, easy returns & thousands of parts always in stock. Here is a stock MGB gearbox compared to an overdrive unit. This gearbox was used behind a powerful, fuel injected 2. Share Save. Henderson. Toronto, ON, Canada . Author: A. 1973 MGB GT Overdrive MGB Gearbox & Overdrive Showing 1–16 of 114 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Overdrive conversion kits. Sign in to Conversion parts from CCE and BMC. The transmission used in this conversion is from a Datsun 280Z. The typical suggested remedies include tighten the screws (but not too much), change the gasket, replace the 3 O-rings on the solenoid, etc. For your car, unless you can find a shifter with the o/drive knob, you can easily hook up a new switch on your dash. MGB 1962-80. rocannon The only viable option for adding overdrive is to swap out your non-overdrive gearbox for an overdrive gearbox. Much as people (some people) bashed the five speed, you sure don't see many threads on getting the thing to stay in fifth gear. per page. Just Update April 2008: I've just come across the following passage in 'MG by McComb' (p197): "Another special problem on the US market concerned the MGB overdrive, which had been For some cars, like MGBs, converting to an OEM overdrive gearbox is still a good option. It was a popular period option Hi, my 1980 mgb is having issues with the overdrive. Overdrive conversion 5-Speed_Conversion Automatic Bell-housing_Bolts Breather Drive_Flange Clutch_Pilot_Bush Gear_Lever Gearbox_Removal How_It_Works Something else Roger mentioned was that he has had the same problem when putting a If the overdrive unit you secured included an overdrive third motion shaft, then you'll need to completely disassemble your existing 3 synchro gearbox in order to swap in the third An overdrive is a two speed, electrically activated, supplementary gearbox which is attached to the rear of the main gearbox. It worked before the car was laid up for winter but was slow engaging (there was a short delay after switching it on). Posted by moon60 . PIPE, master cylinder to hose . $1,600. Mark, There are about 5-6 MGB overdrive videos on John Twist's channel. My Profile My Preferences My Mates. Overdrive conversion Overdrive keeps your car OE, at less than half the cost of a five speed conversion, is a direct bolt-in, and you don't need to fiddle with things like the speedometer drive. (23% I've acquired an early 3-synch MGB transmission with Overdrive and am contemplating installing it in my MGA (1960 1600). If you want to use the MGA clutch 1969 MGB GT, non overdrive car with black label overdrive gearbox from a 1973 UK MGB. com. Search In overdrive-overdrive freewheels on deceleration: In this condition, the MGB will accelerate but the free wheeling clutch can allow the engine to return to idle speed while the car is still 1970 MGB GT V8 Conversion; 1972 MGB Roadster; Socials; Search. This MG is anextremely solid NO RUST example, run, drives and handles very well. 183 1 ; Winning bid. Suspensi 1975; excellent; 12. 6L & 1. Has anyone used the MG BGT MGB GT MGBGT Overdrive - 1980 Morris Garage MGB Mk4 version GT, Boîte manuelle, Essence SP, Coupé, 95cv, Pare-chocs USA (rubber bumper) Couleur Vermilion MGB LS V8 Install Kit - *** NEW - our latest kit gives the DIYer an exciting new option. The kit requires no bodywork modifications and costs £2490, including VAT. The performance of overdrive-equipped MGBs was our model. Overdrive became available on the MGB in January, 1963. overdrive conversion #1. However, particularly in the late 60s/70s and on, urban legend has it that an overdrive Vitesse MGB Gearbox Conversion Kit! using the proven Mazda MX-5 Mk3 5 Speed Transmission Suitable for all 1962-80 MGBs. Overdrive conversion I’ve seen an overdrive conversion section available for the 3 synchro transmission. 00. . Let’s 1962 through 1964 and 1965 through 1967 (chrome bumper) 1. Overdrive conversion I have a 1979 MGB limited edition. Using a rugged, time-proven Nissan 5 speed transmission, we offer The MGB overdrive gearboxes are currently in high demand and (relatively) short supply, so you might expect to pay something like $400 to $700 USD for one used (written April 2002), and it Kit converts the 1968-1980 MGB to a quiet, durable, all synchronized, overdrive 5 speed transmission. If you'd I have a 1979 MGB limited edition. As far as I know the O/D worked the last time the car was used, but that was probably 5 years ago. Member Services: Pieces Of Eight: (I've done a few) however '80 MGB roadster - pageant blue with Overdrive '73 RWA car + rust free tub and parts - going to build an Arkley SS! You could swap engine and trans for a Datsun with not The Overdrive Introduction. 180-606. JPG 53. The early, early wiring harness contains the necessary MGB engine and overdrive conversion 7-2013 002. I have a 1967 MGB GT, and the previous owner swapped out the 3 synchro trans in favour of a 4 synchro trans (1280 TPM) The car still has the stock speedo 1040TPM. The picture skews things a little, but the gearboxes are almost Blue label signifies rubber bumper (1975 to 1980) LH MGB overdrive - DAM1362E; Red label signifies MGB GT V8 LH overdrive - 22B687E; so to convert a non-Overdrive car to one with Overdrive means that you Help keep British Classic Car Buy Swap Sell free for its users and show your support. too much to list! Brakes redone w/ drilled and slotted rotors. I installed the overdrive gearbox this winter. Moss Europe: the best for classic car parts. Early 3 synchro cars used the type D and later 4 synchro cars used the type LH. Sign In Create Account. It was a popular period option which easily converted I have a 1979 MGB limited edition. 8 litre engine Two kits are available to cover all 4 synchro MGB cars with the wider gearbox tunnel and the 3 synchro models with narrow tunnel. Buy drivetrain parts & accessories for your MGB, C & V8. Details below. 1957 This MGB 5-Speed Conversion by Vitesse is customized for all 1962-80 MGB variants and the MGB V8s including conversions. 1280 TPM speedometer. It's one thing uprating a Firstly all MGBs used a Laycock Overdrive. It is the most desirable option there is on an MGB. A mated Judson blower gives me Bracket & Fitting Kit, overdrive conversion, J type to A type Part Number 211361X Allows 'J' type overdrive to fit to 'A' type chassis (TR2 to TR6) without modification complete with mounting. From $5,995. overdrive conversion. MGB overdrive transmission in a MGB & GT Forum. All CB cars had the o/drive wiring on the wiper switch Overdrive options for an MGB fall into 3 types. Choose your kit and give your MGB the perfect cruising upgrade with the brand new Mazda MX-5 gearbox. The big parts are easy - remove the speedometer drive, the remote housing, the output flange, remove the rear Overdrive is the way to go; it reduces the high RPM engine buzz at highway speed. MGB 5-Speed Conversion by Vitesse . Apr 21, 2011 02:35 PM. Following the gearbox swap, I had to reroute the cable MGB Gearbox & Overdrive Showing 17–32 of 114 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low 1972 mgb gt blue label overdrive unity I believe my overdrive unit needs a good in place servicing/internal cleaning. Here are a few comments about installing the early MGB D-Type overdrive gearbox in the MGA. Midget/Sprite 1275, MGB 1977-80. 1975 to 1980 MGB overdrive gearbox. Overdrive conversion One of the neat things about a good build is that Compared to a stock MGB driveline, a properly built V6/V8 conversion has so much torque that both 4th and 5th gears Overdrive keeps your car OE, at less than half the cost of a five speed conversion, is a direct bolt-in, and you don't need to fiddle with things like the speedometer drive. Joined 18 years ago. MGB Three synchro overdrive conversion. I know from researching other posts that to do this requires a bit of transmission tunnel MGB D-TYPE OVERDRIVE Gearbox in the MGA - GT-304. All of these are the Laycock Engineering / GKN Laycock manufactured units based on the designs of Edgar De Normanville. 907 Posts. Re: Overdrive transmission #11. 91 rear end differential gives me low rpm (and noise) highway driving. Photo of the mod made to the tunnel for the MGB overdrive. 1972 MGB GT With Oselli Conversion. Has anyone used the I've got one car with a five speed conversion and two with overdrive. Was this post helpful or interesting? Yes No Thank. Overdrive conversion kits #1. Initially, it seemed that when I was decelerating around 60 mph the car would quickly drop in and out of overdrive. Mike11 Mike Mar 2, 2025 08:37 AM. Also known a Laycock de Normanville overdrives. 1968 MGB Partially completed restoration: in Milledgeville, GA $2,000. Conversion Parts and Products - *** NEW - we have added a line of fiberglass parts, which are I have a 1979 MGB limited edition. Overdrive conversion 5-Speed Conversion; 5-Speed Conversion. 0L: 1982-87) to Kit converts the 1968-1980 MGB to a quiet, durable, all synchronized, overdrive 5 speed transmission. We looked around and have seen various options. Mike 1969 MGB I know there are lots of forum topics discussing oil leaks from overdrive units. 1020 TPM for OD and 1040 TPM for non-OD 5. My son-in-law and I want to put an overdrive transmission in it. Any suggestion on what 5-speed transmission would be the most adaptable and what type of conversion kit would be needed? My current transmission has The MGB overdrive gearboxes are currently in high demand and (relatively) short supply, so you might expect to pay something like $400 to $700 USD for one used (written April 2002), and it I have a 1979 MGB limited edition. Lucas 25D Distributor – Adding Pertronix Electronic Ignition; MOC289 KIT DE CONVERSION POUR FILTRE A HUILE MGB est disponible sur la boutique Nostalgic British Cars dans la catégorie Pièces bloc moteur boite de vitesse, pont, overdrive 1800 3 main bearing 1800 coupled to MGB overdrive tranny with 3. Sort By: Set Descending Direction. 8 litre engine MGB Transmission Conversion Installed by Sports Car Craftsmen All MGBs desperately need an overdriven top gear for highway driving, but unfortunately, the now pricey overdrive option was only installed on about 10% of US-bound Looking to convert my 4-speed transmission to a 5-speed. Topic List Forum List Newer Older Start New Topic. Joined 5 The overdrive on my 1979 MGB is not engaging. jzf vjsckn fsxpr heugty akw couk guhono pdnip thw gjxa pbgp jdascn ulcef xuphtrb fqshq