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 Post subject: twin carbies 1970 cs
PostPosted: Sun Jun 24, 2018 7:12 pm 
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998cc
998cc

Joined: Mon Dec 19, 2016 8:38 pm
Posts: 607
Just another rant about the carbies, seems difficult to tighten the rear nuts on the carbies ,do you use a grind down spanner ? 9/16 af
Allen


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Sun Jun 24, 2018 7:32 pm 
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1275cc
1275cc
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Joined: Fri May 02, 2008 3:07 pm
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I just use an open end spanner if the studs are too long. But I also remove the entire manifold with the carbies. I dont remove or replace the carbies with the manifold still fitted to the engine.


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Sun Jun 24, 2018 8:34 pm 
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1275cc
1275cc

Joined: Sat Feb 09, 2013 5:44 pm
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Location: Camden
p7676 wrote:
Just another rant about the carbies, seems difficult to tighten the rear nuts on the carbies ,do you use a grind down spanner ? 9/16 af
Allen


That's been my experience too. I think it's just 'mini: if you can see it, you can't touch it; if you can touch it you can't see it". Many modern spanners are very long and getting caught up on all the springs and cables is usual. I have to keep turning the open ended spanner over to get just 1/2 a flat at a time.


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Sun Jun 24, 2018 8:57 pm 
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998cc
998cc

Joined: Fri Aug 30, 2013 8:59 pm
Posts: 1029
Location: Western Sydney
Admittedly I only have a single carb, but I bought Sumer stubby ROE from Supercheap just for working on the mini.
Surprising how much easier things are with them.

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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 4:16 am 
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1275cc
1275cc
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Posts: 2651
Location: Muswellbrook -- NSW
I think the original nuts were not as thick as a normal nut .

I filed down some stainless nuts to fit my 1-1/2" twins .


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 6:39 am 
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998cc
998cc

Joined: Mon Jan 12, 2015 10:59 pm
Posts: 968
Location: Holt ACT
Phil 850 wrote:
Admittedly I only have a single carb, but I bought Sumer stubby ROE from Supercheap just for working on the mini.
Surprising how much easier things are with them.


Are you able to point me to what you are referring to here?


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 9:47 am 
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998cc
998cc

Joined: Wed Sep 22, 2004 5:46 pm
Posts: 728
Location: Melbourne
Go to Bunnings and buy a cheap short ring open ender spanner for $1 and cut the ring end off to make your own stubby.
IIRC the nuts are 5/8" AF.
Edit: Just checked and the nuts are 9/16" AF.

RonR

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Last edited by miniron on Sat Jun 30, 2018 11:15 am, edited 1 time in total.

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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 10:14 am 
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998cc
998cc

Joined: Mon Dec 19, 2016 8:38 pm
Posts: 607
The nut size on my carbies is 9/16 AF which means Across the Flats. Not the dia of the stud. I will check if there were smaller nuts used they would have to be 1/2 AF. You cant change the stud dia as you know. Pain to fit.
Allen


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 11:59 am 
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848cc
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Joined: Thu Sep 17, 2015 9:25 pm
Posts: 181
Location: Brisbane
Nuts are 3/8 UNF, 9/16 AF and around 5mm thick. Photo shows a cheap 1/2 cut open ended spanner that I've used for years. The carby set shown are from a Mini (jigsaw puzzle) I bought last year. Could not find the proper nuts so I machined down some thicker 3/8 UNF nuts to make them easier to fit.


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 6:37 pm 
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998cc
998cc

Joined: Fri Aug 30, 2013 8:59 pm
Posts: 1029
Location: Western Sydney
DavidE wrote:
Phil 850 wrote:
Admittedly I only have a single carb, but I bought Sumer stubby ROE from Supercheap just for working on the mini.
Surprising how much easier things are with them.


Are you able to point me to what you are referring to here?


These ones.
http://www.supercheapauto.com.au/Produc ... ece/342530

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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 7:58 pm 
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1275cc
1275cc

Joined: Sat Feb 09, 2013 5:44 pm
Posts: 2187
Location: Camden
The nuts used on HS2 (1 1/4) carbs, as said above, are 3/8inch diameter (of the stud) UNF thread and use a 9/16inchAF spanner. I think they are called "half nuts" or "lock nuts". See minispares comment:

http://www.minispares.com/product/Class ... 0to%20shop

The HS4 carbs use smaller 5/16inch studs that use 1/2 inch AF spanners. These nuts are full sized.


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Tue Jun 26, 2018 10:50 pm 
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998cc
998cc

Joined: Mon Dec 19, 2016 8:38 pm
Posts: 607
good info


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Wed Jun 27, 2018 6:23 am 
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998cc
998cc

Joined: Mon Jan 12, 2015 10:59 pm
Posts: 968
Location: Holt ACT
Phil 850 wrote:
DavidE wrote:
Phil 850 wrote:
Admittedly I only have a single carb, but I bought Sumer stubby ROE from Supercheap just for working on the mini.
Surprising how much easier things are with them.


Are you able to point me to what you are referring to here?


These ones.
http://www.supercheapauto.com.au/Produc ... ece/342530


Well, I would never have found them from the previous description!


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Wed Jun 27, 2018 7:05 am 
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SooperDooperMiniCooper ExpertEngineering
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Joined: Fri Apr 29, 2005 9:46 am
Posts: 18854
Location: Under the bonnet son!
I love the price. I have them mind for other little jobs too.

Lower rad bracket bolts, clutch cover, lower engine mounts...

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All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.


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 Post subject: Re: twin carbies 1970 cs
PostPosted: Wed Jun 27, 2018 8:04 am 
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998cc
998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1139
Location: Tassie
Stubby spanners can be very handy. The amount of spanners in ones toolbox though:
stubby, standard, long ring & open, ratcheting, offset ring, long ring ring. Goes on and on...

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