Auto - Manual Transmission??

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richie17 - 09 Mar 2004 13:03 GMT

I have a 1992 automatic mini mayfair in need of a new gearbox. I've been offered a 1988 engine and manual gearbox, but am unsure if they are compatible. Can I fit this in?? Does it use the same mounts, etc? Anything else I need?

Any help is much appreciated.

Rich

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Jono Barspeed - 09 Mar 2004 13:23 GMT

What u have here is a very comon question.
Many will say that you cant, but you can.
Take out the auto engine and box along with the cables and control lever.
Trial fit the engine in the subframe by hanging it with a crane or hoist.
you will notice that the old mount holes are further back, you will have to
realign the mounts further forward, so do the trial fit, marking the
subframe thru the holes of the manual engine and box laid in temporaly, this
has to be done very carefully as too far forward the exhaust wont fit.
If unsure, have a look at a proper manual subframe and do some measurements
Once the new mounting holes are drilled the new manual engine and box are
ready to fit, you may have to use new manual drive shafts because im sure
they are differant lengths to auto ones?
You will have to cut a hole in the floor for the gear shift and also use the
manual carb, that is if the auto carb has a limiter fitted?

Jono

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> I have a 1992 automatic mini mayfair in need of a new gearbox. I've been offered a 1988 engine and manual gearbox, but am unsure if they are

compatible. Can I fit this in?? Does it use the same mounts, etc?
Anything else I need?

> Any help is much appreciated.
>
> Rich

Reply to this Message

Graham W - 10 Mar 2004 11:33 GMT

> > I have a 1992 automatic mini mayfair in need of a new gearbox.
> > I've been offered a 1988 engine and manual gearbox, but am unsure if
> > they are compatible. Can I fit this in?? Does it use the same
> > mounts, etc? Anything else I need?
> >
> > Any help is much appreciated.

> What u have here is a very comon question.
> Many will say that you cant, but you can.

Jono is dead right. I'm going to say you can't.

Well.

You can, but it's ugly.

> Take out the auto engine and box along with the cables and control
> lever.
[quoted text clipped - 5 lines]
> this has to be done very carefully as too far forward the exhaust wont
> fit.

Sounds like you've (Jono) actually done an auto to manual conversion.
I've gone the other way, auto into a manual car.

In my experience, the auto subframe is significantly wider across the
engine mounts, as well as having a distinct flare forward in the front
crossmember of the subframe. I would think that fitting a manual into an
aut subframe would be difficult, but not as difficult as butchering an
auto to fit the manual subframe.

> you may have to use new manual drive shafts because im sure
> they are differant lengths to auto ones?

I don't believe so. The inner joints on the auto are probably hardy
spicer uni joints like the early Cooper S. The long shaft is the same as
the short shaft out of a Morris/Austin 1100/1300.

> You will have to cut a hole in the floor for the gear shift and also
> use the manual carb, that is if the auto carb has a limiter fitted?

I've never seen (in Australia) an auto with anything but a bog standard
HS4 carby, with the notable exception of my own, but that was very much
a one off.

Before you embark on a moderately difficult conversion, what is wrong
with the auto?

Does it by any chance only go backwards?

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Steve - 10 Mar 2004 18:07 GMT

> > you may have to use new manual drive shafts because im sure
> > they are differant lengths to auto ones?
>
> I don't believe so. The inner joints on the auto are probably hardy
> spicer uni joints like the early Cooper S. The long shaft is the same as
> the short shaft out of a Morris/Austin 1100/1300.

The later autos in the UK used pot joints like the manual cars.

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Rgds
Steve
steve@dsnclassics.co.uk
www.dsnclassics.co.uk

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Graham W - 11 Mar 2004 01:45 GMT

> > > you may have to use new manual drive shafts because im sure
> > > they are differant lengths to auto ones?

> > I don't believe so. The inner joints on the auto are probably hardy
> > spicer uni joints like the early Cooper S. The long shaft is the same
> > as the short shaft out of a Morris/Austin 1100/1300.

> The later autos in the UK used pot joints like the manual cars.

8-)
Any time you say the phrase "later cars", you've immediately left all us
Aussies behind. In fact the Minimatic had ended it's run here by about
1969.

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Steve - 11 Mar 2004 15:30 GMT

> > > > you may have to use new manual drive shafts because im sure
> > > > they are differant lengths to auto ones?
[quoted text clipped - 9 lines]
> Aussies behind. In fact the Minimatic had ended it's run here by about
> 1969.

Well, at least I qualified it this time with 'in the UK'!! We get people in
asking for a part for their 'really old Mini'.... then it turns out to be
1984 or something!

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Rgds
Steve
steve@dsnclassics.co.uk
www.dsnclassics.co.uk

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