Very curious- I've checked the Mini engine no. ID page and for the life of me, I can't figure it out... it doesn't match with the body, which is an old 850. It seems to be missing a letter. Can anyone help?

its a 1098cc
what more do you want to know?

_________________
No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

That number looks restamped Matt, shouldn't it be 10Y/Ta/H.....?
(In BMCspeak, where Ta = remote shift, Sa = S ratio gears) or didn't Australia have any lower case stamps...

_________________
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.

The engine number on my original 1969 Mini "K" was 10YcTAH 4987S, that might give you some idea, not sure of the capitals though.

_________________

The C in the 10YC indicates that it is the third variant of the Australian 1100 motor. This means it is a Mini K motor.
The S on the end means the block was sleeved from the factory.

The 10Y on its own indicates that it is a Morris 1100 motor.

Thanks very much, fellas.

Yep...sure looks re-stamped....are the two blind rivet holes also a clue remanufactured Police Number
(can't remember if all blocks had em)

_________________
"Show me the Mini!"

English cars had the numbers riveted on. Australian cars have them stamped on the block.
So with imported English cars and blocks, the plates were chiselled off and restamped.
I'm sure others will have more detail about this.

The number looks legit, it's an Oz assembled block so has the 2 holes, but no rivets in (because it never had a plate).

It is not a Police issued number they take the form N661771P where N = NSW, 66= year issued, 1771 = number issued that year, P= Fuzz. I have bought 2 new motors over the years, that number was issued to one of them (new Oz built BMC short motors sold here had no number on em).

_________________
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 have a 1098 here, same prefix but with a lower case a (ie 10Y/Ta/H1****) also with rivet holes. So they are just imported M1100 blocks?

EDIT: http://www.elevenhundred.com/enginenum.php

Yes these blocks were all imported, but the numbers were stamped on here. Numbers with a Y in them were Australian assembled.
As you say, the `a' is in lower case, as it should be. Perhaps the OP's motor got reconditioned, the number decked off as usual then was restamped. That's probably why it has `A'. `a' etc lower case stamps are not real common when you go to buy a set.

_________________
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.