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engine and gearbox mating
Posted: Mon Sep 06, 2021 10:00 am
by stuupnorth
Hi all
having a slight problem fitting a 1275 gearbox(mg midget) to a 1275 (midget as well) engine
the box goes on so far and then it stops just short of the locating dowels on the back plate
removed clutch and fit box no problem checked clutch on output shaft of box all ok
aligned the clutch with tool and seems to be ok any ideas???
cheers
Stu
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 10:04 am
by philthehill
A photo of the clutch pressure plate would be helpful.
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 10:14 am
by paul 300358
Have you used a clutch aligning tool? Is the spigot bearing the correct size for the shaft?
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 10:21 am
by stuupnorth
ok hope these help
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 10:41 am
by les
Something looks off centre to me. (3rd picture down)
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 10:44 am
by stuupnorth
hi mate
it could be down to the dodgy camera work ! the clutch tool slides in ok right up to the end (4th and 5th pics)
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 10:55 am
by stuupnorth
i have just looked on ebay and the clutches list show a clutch with a printed message saying 'flywheel side'
seen here
![Image]()
wheres mine says gearbox side
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 11:19 am
by stuupnorth
Re: engine and gearbox mating
Posted: Mon Sep 06, 2021 2:03 pm
by philthehill
Thank you for the photos.
I would ignore what it says on the driven plate - having checked a NOS 1275cc Midget centre/driven plate - the raised centre portion of the centre driven plate should face away from the flywheel.
Checking the part numbers it could be that you have been supplied with the wrong clutch cover/pressure plate.
The correct part number for the 1275cc pressure plate is Borg & Beck Pt No: 492917.
https://www.moss-europe.co.uk/clutch-ki ... 261bb.html
The Moss/Borg & Beck pressure plate and centre plate have the same part number!!!
The clutch cover as supplied looks too deep to fit inside the bell housing correctly.
https://www.moss-europe.co.uk/clutch-ki ... soc=610374
How does the new clutch cover compare with the old clutch cover especially the depth/height of the cover?
Re: engine and gearbox mating
Posted: Tue Sep 07, 2021 2:43 pm
by Jim McCrae
I had problems too fitting the gearbox after a new B&B clutch in my 1275 midget engine.
The driven clutch plate was a very tight fit on the first motion shaft - I used a file to lightly relieve the internal splines on the plate until it fitting smoothly.
Check also that the spigot bearing is the correct size as we had a problem with this too.
Good luck.
Re: engine and gearbox mating
Posted: Tue Sep 07, 2021 6:44 pm
by stuupnorth
hi all
manged to get the two together with a bit of help from a mate many thanks for all the advice what a royal pain it was but all sorted
again cheers all