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Which 1275 to modify???

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Scoop

Post subject: Which 1275 to modify???

Posted: Sat Jul 12, 2014 5:13 pm

998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1143
Location: Tassie

Hi guys, I have just picked up another moke for parts (collecting next weekend). So I will have 2 Californian mokes, both 1275 models, one is late 78 and the other is late 79. I think there is a difference between the engines, the earlier one is a thin flange block and the later one has a thick flange block.
I will keep one of the mokes original but will part the other one. To much rust to recover.
Which engine would be the better one to build a strong modified grunt box? Stroker 7 port or something.

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1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
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drmini in aust

Post subject: Re: Which 1275 to modify???

Posted: Sat Jul 12, 2014 6:34 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39750
Location: near Baulkham Hills, NSW

Either 1275 block will be fine.
Even a thin flange 1275 block is more rigid than a thick flange 1275S one.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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Bubbacluby

Post subject: Re: Which 1275 to modify???

Posted: Sat Jul 12, 2014 6:36 pm

1275cc

Joined: Sat Apr 14, 2007 8:34 pm
Posts: 3415
Location: Cowra

Wouldn't you just keep the correct motor with the car your keeping original?

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Scoop

Post subject: Re: Which 1275 to modify???

Posted: Sat Jul 12, 2014 6:42 pm

998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1143
Location: Tassie

Bubbacluby wrote:

Wouldn't you just keep the correct motor with the car your keeping original?

That is the preferred way I want to go.

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
5/72 Clubman Gt

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Morris 1100

Post subject: Re: Which 1275 to modify???

Posted: Sat Jul 12, 2014 6:55 pm

Causing or creating vexation

Joined: Wed Jul 21, 2004 10:32 pm
Posts: 19124

Why would a late Californian have a thin flange block anyway?

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drjbeam

Post subject: Re: Which 1275 to modify???

Posted: Sat Jul 12, 2014 10:21 pm

1098cc

Joined: Thu Jan 07, 2010 11:31 am
Posts: 1564
Location: st marys

78-79 both sound like late models to me wernt they started in 66 to be made

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Scoop

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 8:37 am

998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1143
Location: Tassie

Morris 1100 wrote:

Why would a late Californian have a thin flange block anyway?

Should they both be thick flange? Does anyone one now what engine prefix should be in it?

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
5/72 Clubman Gt

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Scoop

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 8:40 am

998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1143
Location: Tassie

drjbeam wrote:

78-79 both sound like late models to me wernt they started in 66 to be made

They are both late mokes but are before the galv body. Both have fuel fillers on the top of the side box.

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
5/72 Clubman Gt

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drmini in aust

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 8:48 am

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39750
Location: near Baulkham Hills, NSW

All 1275 blocks from ~1969?-1970 on were thick flange. No idea of the engine numbers for a late 70s Moke though.

I believe the very last (~1981?) gal Mokes had a 1275 A+ motor, we put one in Barney the pretend S.

[edit] Barney's A+ motor was a 12H706AAZ one

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

Last edited by drmini in aust on Sun Jul 13, 2014 11:58 am, edited 1 time in total.

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mini0998

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 9:06 am

848cc

Joined: Sun Mar 15, 2009 8:30 am
Posts: 158
Location: Canberra

I have a moke thick flange 1275 block in my 63 mini. It's engine number is 1204 ****. Not sure what year it is though.

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Morris 1100

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 10:44 am

Causing or creating vexation

Joined: Wed Jul 21, 2004 10:32 pm
Posts: 19124

The 1204 block is out of the Export Moke from 72-73.
The late Mokes from 78 to 82 with the 1275 motor have a 12H902 motor and maybe a 12H905 on the last ones. There might be another couple of prefixes as well.

A thin flange block is going to be a 12YD/Ta/H from 67/68.

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winabbey

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 12:39 pm

1360cc

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6743
Location: Melbourne, VIC

PM John Sneddon on here. He has a full list of Mini and Moke body and engine number data.

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ex-NSW Police 1970 MK II Cooper S
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drmini in aust

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 12:48 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39750
Location: near Baulkham Hills, NSW

Morris 1100 wrote:

From the Moke forum-
1275 engines in 1981 Mokes should have a 12H706AAZ engine prefix.
http://www.moke.com.au/Forum/index.php?topic=6150.0

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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Morris 1100

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 12:55 pm

Causing or creating vexation

Joined: Wed Jul 21, 2004 10:32 pm
Posts: 19124

drmini in aust wrote:

Morris 1100 wrote:

From the Moke forum-
1275 engines in 1981 Mokes should have a 12H706AAZ engine prefix.
http://www.moke.com.au/Forum/index.php?topic=6150.0

Why would the prefix numbers suddenly go backwards? Especially backwards to an existing Mini 1275GT prefix? :mrgreen:

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drmini in aust

Post subject: Re: Which 1275 to modify???

Posted: Sun Jul 13, 2014 1:18 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39750
Location: near Baulkham Hills, NSW

No idea, but the 706AAZ is an A+ block, the others are not.
Don't these UK sourced numbers just indicate the odds and ends fitted? eg alternator, emissions gear or not, etc?

[edit]
Seems common to late Mokes-
http://www.moke.com.au/australian-moke- ... ?start=270

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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