390 MG Tech | MGB all synchro gearbox 1968-1980

John Twist of University Motors updates his 004 MG Tech video on MGB gearboxes. It's brighter and clearer than video from 20 years ago!

[@MGB-learning]

Outstanding video and presentation. Thanks for re-doing and updating this video.

[@mitchellharris9854]

Great information. I've driven my mgb about 60,000 in the last 5 years and never done anything to the gearbox other than change the oil twice. its the most pleasant gearbox I've ever driven.

[@steveporritt1550]

I have over 100k miles on my O/D gearbox & it wasn't new when I fitted it (original box is non O/D). Apart from changing the oil & the O/D filter & the nylon bush for the gearstick I haven't had to touch it in all those miles. The shift on the box is the best I've had & I normally encounter poor synchros after extended miles on Triumph & Ford boxes but this box just keeps going. Its only downside is weight but then the rest of MGB is built like a tank.

[@dexterharshbarger9810]

Thank you, thank you. Much better than the video from the last century.😊

[@mundanestuff]

Do you even hear the aircraft flying over head anymore? LOL sounds like a WW2 Bomber going over your head when you get to third gear. Great video, really descriptive. I have a dozen gearboxes, and yes, no body seems to need them.

[@anthonyhfe6450]

Wonderful video!!!! I recently topped off my transmission oil and it's easier to move the shift lever. So it's easier to shift now. It was around a quart low !! So if your shifter is tough, check ur oil level. I just thought it was because it's an old transmission, but that was not the case. But besides this, I am glad John Twist gives this gearbox a big thumbs up for being a rugged design. Hopefully my '72 Roadster has tens of thousands of miles ahead of her before needing a new transmission or a rebuild. I always liked 4th gear and its <a href="#" class="seekto" data-time="61">1:1</a> gear ratio as well. Good stuff !! Thanks John! I learn a lot from these videos.

[@classicmechanic9824]

thank you sir for the great information and great quality video, much better than the videos from the dinosaur age😊.

[@davelinkson1]

Great to hear maybe the USAF John?.😊

[@dbesson]

Thanks for the updated video! I inherited my dad's MGA 1622 engine recently. He told me that it has an MGB gearbox but wasn't sure which model it was from. I would think an early MGB model. What would be some things to look for to identify which year it would be from?

[@nitpp]

I put 75w90 gear oil, did I have to change the oil and put 20w50 engine oil?

[@anthonyhfe6450]

Is the laygear (countershaft) submerged in oil, as it's positioned low in the gear box? Also, I didn't realize all that "stuff" turns even when the car is in Neutral !!!! I thought it would be mostly disconnected from the engine. Interesting, my friends.

[@johnkoury1116]

John, my MGB transmission will not shift into any gear. I bought the transmission from a guy whose father took it out of his car evidently to replace it with a gearbox with an overdrive. I have not taken anything apart yet to see what the problem may be. It is sitting on the floor and I cannot get it to go into any gear. I am guessing it is the linkage between the shifter and the rod that moves the levers. What do you think...

[@jbstepchild]

John whats the secret you look amazing

[@mbrant4973]

Hes from the future, he always looks the same