Hey all was wondering if anybody could help me with identifying my block.Its a 1275 without side plates with the number 12yd/ta/h16158.Am i even reading the right number,this is stamped where the head gasket sits.there is another number on the back that is12g G1279.Any help will be great thanks

_________________
www.hellonwheels.com.au

Non-Cooper S 1275 engine.

The other number is a part number.

_________________
SooperDooperMiniCooperExpertEngineering

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

Any idea of the age/time of build

_________________
www.hellonwheels.com.au

It is from a 1275 LS, so I think it maybe a 77 - 78 vintage motor.
Cheers Pete

_________________
A recent study found the average Aussie walks about 900 miles a year
Another study found Aussies drink, on average, 22 gallons of alcohol a year
That means, on average, Australians get about 41 miles per gallon

Kind of makes you proud to be an AUSSIE

Wow awsome thanks so much guys thats a big help

_________________
www.hellonwheels.com.au

It is not a 1275LS engine.
It is a Morris 1100S engine from about 5/69.

12 = 1275
Y = Australian (1275LS engine was fully imported and didn't have a Y)
D = 4th variation = 4.1 final drive ratio = Morris 1100S (1275LS didn't have this diff ratio)
Ta = Std ratio remote centre change.
H = High Compression
16158 = 15158th engine off the line. (one of the very last Morris 1100S) (The first engine was 1001)

The 1275LS has an engine prefix with 12H902UH, nothing like the 1100S.

We need to have like a sticky post of body numbers and engines numbers or something, cause this question gets asked quite a lot. Im sure there is enough information out there to create one post with all the info needed?

_________________

http://www.youtube.com/user/Hanras

High compression 'eh - that'd have been a good one back then. Would be a large journal crank too.

_________________
did I tell you that I won a trophy?

sweet engine...

_________________

yeah, but heavy condrods.... I've got some on my bench next top some S ones... 4 S ones weigh the same as 3 of those LJ ones

_________________
did I tell you that I won a trophy?

Have you ever seen a low compression 1100S? As far as I know they were all high compression. (there is no low compression number listed in the books)
Crank journal dia. changed at engine number 10488.

Yes they called it high compression, but `twas only 8.8:1. hardly what I would call HIGH..
Nothing some decent pistons won't fix though.

1100S with those heavy rods I would hardly call a `sweet engine' cush.
Maybe after the rods are hacked, the crank wedged, and the flywheel sent to Jenny Craig...

_________________
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.

I always thought the 1100's were panned for having too heavy rods and too light pistons....so they tended to flap about

_________________
"Show me the Mini!"

Morris 1100 rods and pistons were fine. But the 1100S rods weigh a bloody ton, these have a big lump on the caps for God knows what reason. When the A+ rods replaced, them, surprise!! No big lumps..

_________________
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.

All the better for reshaping with...

_________________