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Jemal shows you how to inspect a Mini gearbox

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It's been about 10 years since I explained what causes a transmission to grind and crunch gears when shifting, and I still get very nice comments from viewers - thank you!
This is more specific to the classic Mini later gearboxes and shows a few basic ways to check that it's good before bolting it back onto an engine. It's one I've built so it's nice and clean to show some details, but the things to look for apply to most transmissions for the classic Mini, and indeed to most synchro or 'baulk-ring' style transmissions.

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26 авг 2024

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Комментарии : 8

@nicknichols6092 Год назад

Good job...

@JemalCRM Год назад

Hi Nick! I was thinking about your gearbox noise and thought this might be some help explaining how it all works!

@Slack3rDav3 11 месяцев назад

possibly silly question: if towing a mini behind a motorhome, would the odometer go up even without the engine on? My intuition says yes. Purely hypothetical, as I will never do such a thing.

@JemalCRM 9 месяцев назад

Good question! I had to think about it. Yes it will because the wheels will turn the main shaft and drive the speedo cable.

@MrBoredNoMore Год назад

Excellent music taste Sir! Currently inspecting my first torn down mini gearbox, my baulk rings have some wear on their three lugs but not so much on the friction surfaces (not that I've measured the gap to the gear face yet). Do you think this will have a drastic effect on the gearbox operation or can they be re-used with some wear in this area? It's for a standard 1275 road build but will see spirited driving. It doesn't help that this engine and gearbox project I bought on Ebay is costing SIGNIFICANTLY more than I expected it to so I'm trying to save money where it's safe to do so. Any advice would be greatly appreciated.

@JemalCRM Год назад

You won't usually notice any "wear" on the three big lugs that drive the syncro with the main shaft. As long as there is a gap to the gear when the syncro is pushed onto it's cone, it should be doing it's job. Note the condition of the engagement dogs on each gear... if they look good, the synchros are working. If they look bashed up, there has been grinding!

@MrBoredNoMore Год назад

@@JemalCRM yeah I agree it seems strange to have wear on the lugs. can't find reference to that on forums or anything. The gap is good on all my synchros, so will check the dogs next, would definitely prefer to get 4 baulk rings than a new gear set! Cheers for the response

@JemalCRM Год назад

If it's all apart you're welcome to send me pics.... Jemal@CooperRoadMini.com