Visited a new Ausmini member tonight....interesting, rivetted, aluminium engine tally plate on a small bore.

B or PHM1270ET1088A
.............AD...............

BMC remanufactured engine???

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will be a aplus 998 engine,factory remanufactured as they generally start with the bhm number,as i occasionally get the 1275 version in the aplus's,quite common in the uk

Ohhhhh?? this engine had side plates....maybe I'm getting confused with A+1275....but, I thought all A+s were the later, no side plates, stronger block?? Hmmmmmmm

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The only engines without side plates were the non-Cooper S 1275.

Thanks Mike, 1100S only.....no side plates.

So how young are A+ 998s

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1980 on.
As well as 1100S, there's all the others of course that ran that same block with no side plates.
And the A+1275s as said.

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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.

Wow ...the man has a modern engine in the old deluxe and didnt know it. So were there refinements in A+ over A Series???

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We bought an old Clubby once that had an A+ 998 in. Painted yuk yellow it was... the motor that is.

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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.

Not just 1100S.
1275 in Sprite, Midget, Austin America, Morris 1300, Allegro, Marina, Metro, Maestro, Montego, Mini, etc. had no side plates.

By comparison they only made a handfull of 1275's with side plates.

They were cheaper to make.

Thanks Doc....was it VHT??

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Mike.....are you saying MKI Cooper S non-thick flange was only a handfull

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By comparison, I'd say he's saying 'yes'.

It's the way to weed out Cooper S engine fakers. A lot of people say thier 1100S is an S motor which is a fair enough thing to say to non-mini people, as saying 1275 may not mean a lot.

But to other mini people, it's known there is a big difference between S motors and non-S.

What is the reason for the side plates? I had to take my breather sid eplate off and put an 850 one on (which is different, it looks different) and ran a rubber pipe with a tube as my breather.

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1964 Morris 850, 1330 Supercharged - 81.8hp atws.
1975 Leyland Mini S 1100S powered - Nice and reliable.
1977 Leyland Mini LS - Project LS-T

The side plates are there to make it easy to remove or replace the cam followers.
But on the 1275, they made the block stiffer by doing away with them.
Downside is it's near impossible to swap cam with the motor in the car.

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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.

They were inspection plates and probably used in some service operations....but they do weaken the block.

Same car has an interesting fault....when cold, no first and second, after warm up....1, 2, 3, 4.....the clutch master cylinder fluid level was about 30mm below the lip:shock: .....I suggested he lift his carpet and see if the Master has sprung a leak

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