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 Post subject: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 3:47 pm 
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848cc
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Joined: Sat Jan 26, 2019 2:36 pm
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Location: New Zealand
Hi all,

What can anyone tell me about a motor I picked up, has 1206 stamped into the engine tag spot, which I know means GT motor, it has a cooper S gearbox under it. Are they a sort after thing for people rebuilding their gt’s or not really?
Cheers
Chris


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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 4:13 pm 
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Location: Wodonga - Vic/NSW border
yes - very sought after... does it have tappet chest cover side plates?

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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 5:25 pm 
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1275cc
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Joined: Wed Jan 19, 2005 1:52 pm
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Location: Brisbane
1206 Is an 1100S type block

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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 6:47 pm 
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848cc
848cc

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Location: New Zealand
simon k wrote:
yes - very sought after... does it have tappet chest cover side plates?

No side plates


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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 6:50 pm 
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848cc
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Location: New Zealand
Found this on the classic register

Prefix 4: 1206 - This prefix was introduced to the GT in late 1972. Unlike the engines outlined above, this block had a solid rear wall among other features, and was closer to the 1275GT model offered in the UK and some other markets.

1206 and 1207 prefixed engines

Block rear wall: These engines were rationalised large journal blocks, with a solid rear block wall (same spec as UK 1275GT).
Crankshaft: The crankshafts in these later engines were not cross-drilled, and had larger big ends (1.75 inch compared to 1.625 inch). These cranks are stamped with part number 12G1817, and were also tuftrided, using the EN16T steel. These engines naturally also had different main bearing caps to the earlier GT engines.
Crank case ventilation: Unlike the earlier Cooper S related engines, these engine blocks have 2 CCV points located in different positions to the earlier engines. One is located on the timing chain cover plate, and the other sits on the top of the clutch housing. These were fed directly to the carbies via a plastic 4-way adaptor.
Additional engine mount: An additional engine mount was fitted to these engines from the thermostat housing to the bulkhead, into a bracket next to the windscreen wiper motor. This was in addition to the mount running from the bulkhead under the brake/clutch master cylinder, which was also present on the earlier engines.


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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 6:59 pm 
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848cc
848cc

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Location: New Zealand
Chris.Williams wrote:
simon k wrote:
yes - very sought after... does it have tappet chest cover side plates?

No side plates

Still sort after?


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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 7:04 pm 
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1098cc
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Location: Hunter NSW
Chris.Williams wrote:
Chris.Williams wrote:
simon k wrote:
yes - very sought after... does it have tappet chest cover side plates?

No side plates

Still sort after?

Still sort over


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 Post subject: Re: Aussie GT Engine
PostPosted: Mon Jul 29, 2019 7:08 pm 
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1275cc
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Probably a bigger market for the 1206 in NZ because they got most of the later GTs.


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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 2:02 pm 
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1275cc
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Sought after, not sort. Just saying.......

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1967 Cooper S - ready for reg.
1965 Cooper S shell - all painted up, ready for fit out.
1969 Cooper S Mk2. Engine reco WIP
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.


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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 2:43 pm 
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1360cc
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AEG163job wrote:
Sought after, not sort. Just saying.......

Ha ha. As a senior citizen brought up on the need for correct grammar I thought the same thing, but resisted saying anything. It seems it's quite acceptable these days to misspell, abbreviate or use "text speak" when communicating, and that's OK on here. Apart from anything else our members come from very different backgrounds. If the meaning of a post can be understood that's fine.

One that does grate a bit with me is when I see a new part is brought for the car (instead of bought).

OK, enough of the grammar police intervention ... :)

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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 3:33 pm 
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1275cc
1275cc

Joined: Sat Feb 09, 2013 5:44 pm
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Location: Camden
If only a few people wanted these engines, would they then be sort of sought after?


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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 5:26 pm 
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1275cc
1275cc

Joined: Wed Jan 19, 2005 1:52 pm
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Location: Brisbane
Probably not as you can re-stamp any old 1100S thick flange block

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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 5:49 pm 
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1098cc
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Joined: Wed Sep 30, 2015 9:38 am
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Location: Brandy Hill, NSW
Bill B wrote:
If only a few people wanted these engines, would they then be sort of sought after?

English is a tricky language.


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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 7:12 pm 
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1360cc
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simon k wrote:
yes - very sought after... does it have tappet chest cover side plates?


and are they glued on to a solid block :?: :roll:

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 Post subject: Re: Aussie GT Engine
PostPosted: Tue Jul 30, 2019 7:18 pm 
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1275cc
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winabbey wrote:
AEG163job wrote:
Sought after, not sort. Just saying.......

Apart from anything else our members come from very different backgrounds. If the meaning of a post can be understood that's fine.


Point taken. I'll try to be less pedantic in future.

_________________
1967 Cooper S - ready for reg.
1965 Cooper S shell - all painted up, ready for fit out.
1969 Cooper S Mk2. Engine reco WIP
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.


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