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drmini in aust
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PostPosted: Mon Feb 14, 2011 8:55 pm 
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Morris 1100 wrote:
SuperCooper wrote:
Great , so many useable parts in em! And they should all be in good cond too. Will see when i get time to pull one down - dam Mini 50! Sooo many things to do........

The pistons must have a considerable dish in them if the high compression motor was 8.6 to 1. What was the Low comp ? 5 to 1!

There was no low compression option.

8.8:1? I think (I've never heard of 8.6) was the low compression 1275 motor. Dunno why they stamped H on these blocks. (Cooper S was the high one back then)
1100S goes lots better with a set of 9.75s in there. :wink:

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VulcanBB18
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PostPosted: Mon Feb 14, 2011 9:04 pm 
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This seems and oddity, all the literature (& I mean ALL) has the 1100S at 8.6:1, 63hp & 71lb/ft.

All the pommy non S motors seemed to get 8.8:1, maybe the Oz ones got local pistons or something?

cheers

Jacob

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Bubbacluby
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PostPosted: Mon Feb 14, 2011 9:24 pm 
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Radiator wil fit into a clubman.

A mate used to run one his GT and it stayed cool throughout summer nomatter how he drove. He said the bottom mount was awesome because it was just one bolt that was easy to get to and the whole radiator came right out

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850 GT
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PostPosted: Mon Feb 14, 2011 9:51 pm 
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In a clubby they will fit, and work well. but not in anything else.
done it many times!

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Morris 1100
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PostPosted: Tue Feb 15, 2011 3:22 pm 
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VulcanBB18 wrote:
This seems and oddity, all the literature (& I mean ALL) has the 1100S at 8.6:1, 63hp & 71lb/ft.

All the pommy non S motors seemed to get 8.8:1, maybe the Oz ones got local pistons or something?

cheers

Jacob

You have to realise that each country has different petrol so they may have needed to play with the compression to suit what is available.

The factory made the motors to suit what the market wanted, the Morris 1100 had 50 BHP and they wanted to give it a boost with the 1100S.
So 63 BHP was a big increase over what was the normal power for a car that size.
They probably didn't need to run the compression any higher to sell all the cars that they could make at the time.
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Lillee
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PostPosted: Tue Feb 15, 2011 3:39 pm 
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drmini in aust wrote:
Morris 1100 wrote:
SuperCooper wrote:
Great , so many useable parts in em! And they should all be in good cond too. Will see when i get time to pull one down - dam Mini 50! Sooo many things to do........

The pistons must have a considerable dish in them if the high compression motor was 8.6 to 1. What was the Low comp ? 5 to 1!

There was no low compression option.

8.8:1? I think (I've never heard of 8.6) was the low compression 1275 motor. Dunno why they stamped H on these blocks. (Cooper S was the high one back then)
1100S goes lots better with a set of 9.75s in there. :wink:


Well my 1100S motor runs 10.5 now :P

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GT mowog
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PostPosted: Tue Feb 15, 2011 5:04 pm 
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drmini in aust wrote:
Morris 1100 wrote:
SuperCooper wrote:
Great , so many useable parts in em! And they should all be in good cond too. Will see when i get time to pull one down - dam Mini 50! Sooo many things to do........

The pistons must have a considerable dish in them if the high compression motor was 8.6 to 1. What was the Low comp ? 5 to 1!

There was no low compression option.

8.8:1? I think (I've never heard of 8.6) was the low compression 1275 motor. Dunno why they stamped H on these blocks. (Cooper S was the high one back then)
1100S goes lots better with a set of 9.75s in there. :wink:


My Leyland Workshop Manual in the UK section, puts the 1100s Engine at compression ratios of 8:1, 8.8:1 & 9.75:1 however the Australian Section puts it at 8.6:1. I would suggest the latter is a typo, as there are no factory parts listed in either the UK or Ozzy lists that could give an 8.6:1 compression ratio. Likewise, there are no listings for parts to give 8:1 CR either :roll:

It also lists (in the UK Section) HC Engines having 8.8 or 9.75:1 ratios (go figure) and the LC is the 8:1

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Morris 1100
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PostPosted: Tue Feb 15, 2011 5:11 pm 
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I have 8.6:1 in a couple of different BMC books, so if it was a typo it was done in 67, 68 and 77 by three different printers.
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850man
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PostPosted: Tue Feb 15, 2011 5:50 pm 
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850 GT wrote:
In a clubby they will fit, and work well. but not in anything else.
done it many times!


??? :roll:
They fit into a round nose mini as well. :wink:

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bamnfi
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PostPosted: Tue Feb 15, 2011 5:55 pm 
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850man wrote:
850 GT wrote:
In a clubby they will fit, and work well. but not in anything else.
done it many times!


??? :roll:
They fit into a round nose mini as well. :wink:

Image
Image


Obviously just. Must need a bit of work on the LHS bonnet methinx. Looks proud.

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rehab1964
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PostPosted: Tue Feb 15, 2011 6:48 pm 
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bamnfi wrote:
850man wrote:
850 GT wrote:
In a clubby they will fit, and work well. but not in anything else.
done it many times!


??? :roll:
They fit into a round nose mini as well. :wink:

Image
Image


Obviously just. Must need a bit of work on the LHS bonnet methinx. Looks proud.


No, they fit right in - Ms Plum has the full 110S setup, no mods to the bonnet or catch at all

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850man
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PostPosted: Tue Feb 15, 2011 6:52 pm 
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bamnfi wrote:
850man wrote:
850 GT wrote:
In a clubby they will fit, and work well. but not in anything else.
done it many times!

??? :roll:
They fit into a round nose mini as well. :wink:

Obviously just. Must need a bit of work on the LHS bonnet methinx. Looks proud.


Nope, std bonnet as well. Most Nb cars use the bigger M1100 radiator, no need to modify the bonnet, it just fits.

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Lillee
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PostPosted: Wed Feb 16, 2011 9:11 am 
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Your kidding! from both pics it looks like it sticks out by an inch or more!

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