classic car forum header
Classic cars forum & vehicle restoration.
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
How To Register     Posting Photographs     Privacy Policy     F/book facebook.com/oldclassiccar

Mini Manifold.
Post new topic   Reply to topic    Classic cars forum & vehicle restoration. Forum Index -> Mechanical Restoration
Author Message
Richard H



Joined: 03 Apr 2009
Posts: 2142
Location: Suffolk

PostPosted: Tue Apr 13, 2010 11:18 pm    Post subject: Mini Manifold. Reply with quote

Quick question. My aunt has a 1987 998cc Mini Automatic. Bit modern for this forum maybe? Anyway it has failed the MOT on a cracked manifold and I have been told the carb flange is different on auto and manual Minis so the manifold is different. Is this true?


_________________
1935 Standard Twelve
1953 Austin A40 Somerset
1958 Austin A55 Cambridge
1959 Austin A35
1980 Vauxhall Royale 2.8 auto
1987 Austin Maestro 1.3 L
Back to top
View user's profile Send private message
bob2



Joined: 06 Dec 2007
Posts: 1722
Location: Malta

PostPosted: Wed Apr 14, 2010 8:14 am    Post subject: Reply with quote

sorry rich but I've no idea. all i know is that the subframe for an auto is different to the manual one and that it!!
you could always try the mini forum, thay will be able to help you surely!
Back to top
View user's profile Send private message
Rick
Site Admin


Joined: 27 Apr 2005
Posts: 21215
Location: North-west UK

PostPosted: Wed Apr 14, 2010 8:25 am    Post subject: Reply with quote

I've a vague recollection that it is different. Years ago mum had a tweaked Mini and I remember dad specifically looking for a manifold from an auto, when he was hoping to fit a different carb to her car.

R
_________________
Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
Back to top
View user's profile Send private message
victor 101



Joined: 03 Apr 2009
Posts: 449
Location: East Yorkshire

PostPosted: Wed Apr 14, 2010 9:02 am    Post subject: Reply with quote

It maybe that it has a vacuum takeoff for the auto box, I have a repair manual for Mini automatic transmissions somewhere, I will try and find it later.
Back to top
View user's profile Send private message
exbmc



Joined: 18 Jun 2009
Posts: 237
Location: Derby East Midlands

PostPosted: Wed Apr 14, 2010 4:28 pm    Post subject: mini manifold Reply with quote

Many years since I worked on mini's, but I recall that the auto's, certainly the original 850's, had a bigger bore manifold and larger carb than the manuals. This was to try to restore some of the performance lost through the auto box.
Back to top
View user's profile Send private message
victor 101



Joined: 03 Apr 2009
Posts: 449
Location: East Yorkshire

PostPosted: Wed Apr 14, 2010 10:40 pm    Post subject: Reply with quote

victor 101 wrote:
It maybe that it has a vacuum takeoff for the auto box, I have a repair manual for Mini automatic transmissions somewhere, I will try and find it later.

I think exbmc could be right, there is no mention of any link to the transmission other than throttle linkage.
Back to top
View user's profile Send private message
bob2



Joined: 06 Dec 2007
Posts: 1722
Location: Malta

PostPosted: Thu Apr 15, 2010 8:35 am    Post subject: Reply with quote

most probably as exbmc and victor 101 said
Rick I htink yours mum's was a mark 1 countryman right?
so the most probable upgrade was in the form of a 1 1/2 inch su carb instead of the 1 1/4 fitted by the factory so that would mean that the reason to find an inlet manifold from an auto was the inlet's bore, more than anything else!!
He would have needed a bigger air filter as well since the small one fitted to 850's with the 1 1/4 su's would not fit on the bigger su
Back to top
View user's profile Send private message
Rick
Site Admin


Joined: 27 Apr 2005
Posts: 21215
Location: North-west UK

PostPosted: Thu Apr 15, 2010 9:05 am    Post subject: Reply with quote

bob2 wrote:
most probably as exbmc and victor 101 said
Rick I htink yours mum's was a mark 1 countryman right?
so the most probable upgrade was in the form of a 1 1/2 inch su carb instead of the 1 1/4 fitted by the factory so that would mean that the reason to find an inlet manifold from an auto was the inlet's bore, more than anything else!!
He would have needed a bigger air filter as well since the small one fitted to 850's with the 1 1/4 su's would not fit on the bigger su


yup that sounds about right, 1967 it was, plus it had the MG1100 cylinder head on it (now on my A40).

R
_________________
Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
Back to top
View user's profile Send private message
bob2



Joined: 06 Dec 2007
Posts: 1722
Location: Malta

PostPosted: Fri Apr 16, 2010 8:45 am    Post subject: Reply with quote

i think that cylinder head was very similar to the one fitted to 998 cooper engines, wouldnt mind one for my 998 mini, together with a set of twin su's!!
Back to top
View user's profile Send private message
Rick
Site Admin


Joined: 27 Apr 2005
Posts: 21215
Location: North-west UK

PostPosted: Fri Apr 16, 2010 9:36 am    Post subject: Reply with quote

bob2 wrote:
i think that cylinder head was very similar to the one fitted to 998 cooper engines, wouldnt mind one for my 998 mini, together with a set of twin su's!!


12G295, that the one?

R
_________________
Rick (OCC Admin)
Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
Back to top
View user's profile Send private message
Richard H



Joined: 03 Apr 2009
Posts: 2142
Location: Suffolk

PostPosted: Fri Apr 16, 2010 11:43 am    Post subject: Reply with quote

I think we've managed to source a secondhand one now, spoke to a Mini specialist and he confirmed Mini autos had a different carb/manifold until 1972, from then on it was the same. Now we've just got to struggle with the very rusty looking manifold studs to get it off Sad

Thanks everyone Smile
_________________
1935 Standard Twelve
1953 Austin A40 Somerset
1958 Austin A55 Cambridge
1959 Austin A35
1980 Vauxhall Royale 2.8 auto
1987 Austin Maestro 1.3 L
Back to top
View user's profile Send private message
bob2



Joined: 06 Dec 2007
Posts: 1722
Location: Malta

PostPosted: Fri Apr 16, 2010 12:22 pm    Post subject: Reply with quote

yes rick thats the one!!! want to sell? Smile

Richard H, so that confirms what has been said in this post cause till 72 minis were still being fitted with the smaller su.
Back to top
View user's profile Send private message
Richard H



Joined: 03 Apr 2009
Posts: 2142
Location: Suffolk

PostPosted: Fri Apr 16, 2010 1:20 pm    Post subject: Reply with quote

That's right Bob, thanks everyone. Very Happy

Should be back on the road soon Smile
_________________
1935 Standard Twelve
1953 Austin A40 Somerset
1958 Austin A55 Cambridge
1959 Austin A35
1980 Vauxhall Royale 2.8 auto
1987 Austin Maestro 1.3 L
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Classic cars forum & vehicle restoration. Forum Index -> Mechanical Restoration All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Forum T&C


php BB powered © php BB Grp.