engine code?

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Paulc
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Location: London

Re: engine code?

Post by Paulc »

This might help:

2A628
1.0625"/26.99
1.00"/25.4
24.5
850, 998 Mini & 948 Sprite

2A629
1.0625"/26.99
1.00"/25.4
24.5
948, A35 & Morris Minor

12A1456
1.0625"/26.99
1.00"/25.4
24.5
850, 998 Mini & 948 Sprite

12G202
1.156"/29.36
1.00"/25.4
26.1
997 Cooper, Austin 1100 Mk

CAM4180
1.0625"/26.99
1.00"/25.4
25.5
998 Mini - A+ (1980-on) and lead free

12G206
1.218"/30.93
1.00"/25.4
28.3
Early 998 Cooper, MG1100

12G295
1.218"/30.93
1.00"/25.4
28.3
998 Cooper, MG1100

12A185
1.401"/35.6
1.22"/31.0
21.4
First Mk1 Cooper S

AEG163
1.401"/35.6
1.22"/31.0
21.4
Later Mk1 & Mk2 Cooper S

12G940*
1.312"/33.33
1.15"/29.2
21.4
1275GT, Austin 1300, all late A+

models inc. Turbo but not MG Metro

12G940
1.401"/35.6
1.15"/29.2
21.4
Stamped '12G1805' on flat area by thermostat - MG1300, 1300GT & Mk3 Cooper S

12G940*
1.401"/35.6
1.15"/29.2
21.4
As above plus MG Metro

12G940*
1.312"/33.33
1.15"/29.2
21.4
Single point injection, also numbered 12G940B cast into head at clutch end

12G940*
1.312"/33.33
1.15"/29.2
21.4
Multi point injection, also with a number starting 'LDF10…' cast into head at clutch end and painted black
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A40FARINAGURU
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Re: engine code?

Post by A40FARINAGURU »

12G 202 also fits 1098cc engined A35/A40 & those things from Cowley! (jelly moulds)
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Demetri
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Location: Nicosia, Cyprus

Re: engine code?

Post by Demetri »

jon wrote:can anyone help??????? i have just got the engine out and wondered if anyone can let me know what size it is? code reads..(12A497 RMC) ANY HELP WOULD BE HANDY THANKS....
Hi all.. I also have the same problem of engine identification...

I recently acquired an 1956 A30 Countryman with, supposedly, an 803cc engine. The engine is in bits in boxes in the back of the car, and it has a damaged cylinder and head and requires a full rebuild.

The block deck has the chassis number stamped on it where the engine ID tag should have been, so I suspect the tag was removed in order to skim it, then they lost it.

I recently spoke to a relative of the previous owner (who had it from new) and he said he seems to remember that it was he that burnt the original 803 when he was learning to drive, and they subsequently installed a different engine. He said there was a big difference in power after the installation of the 'new' engine.

This story is all going back 40-50 years, so he may have got his history a little mixed up. The car has been in dry storage for the last 30+years. So now I'm wondering weather or not I have the original engine or not... whether its an 803 or not, or if its a bigger one?

All I have to go by are these number cast into the block:
Image
Image

and these numbers in the head:
Image
Image

Anyone got any ideas how I can ID the engine size, at least?
1956 A30 Countryman
* 1 owner - recovered from dry basement where it sat for 30+ years *
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Demetri
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Joined: Fri Oct 07, 2016 8:27 pm
Location: Nicosia, Cyprus

Re: engine code?

Post by Demetri »

OK.. i just realised, after referring to Vizard's, that the 803cc was the only engine in the series to have a 58mm diameter bore. So I ran down to the garage to measure mine, and it is indeed 58mm.

So I guess that solves that then! At least I know its the correct size... whether it was a replacement engine I don't know... but I found a few clues that point to it maybe being the original.

The pistons are not split-skirt, the big end bearings are 020, and I found an SU carb in my bag-o-bits. So I'm guessing that the increased 'power' that my uncle had experienced back in the 60's was probably after having the original engine machined and having a few mods done to it. Who knows, I never will :lol:
1956 A30 Countryman
* 1 owner - recovered from dry basement where it sat for 30+ years *
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Neil Evans
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Re: engine code?

Post by Neil Evans »

The 803 engine is easily identified by the oil filter which mounts horizontally, whereas on all the later engines it mounts vertically... The SU carburettor will have made a whole 3BHP difference... :thumbs:
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gazza82
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Re: engine code?

Post by gazza82 »

jon wrote:i think my eyes are giving up, that or my memory. yes it says 12G295. so thats good. and i got in contact with ivor searl engine re-builders and they have said that going by the casting numbers on the block it would appear to be a 1098 engine. so good news all round.log book says 1098 too but it's a shame it does'nt have the engine number on it then i would know if it was original to the car. hey ho...anyway as for rebuild i'm not to worried, i got it running befre i removed it and it was running sweet no missing or messing about so just a set of core plugs to be safe and a new ring gear as it's missing a tooth. then re-paint.
Might be the original engine but only if you have a van/countryman. No saloons were bigger than 948cc.
But you probably will never know. Engine number and chassis number were originally same (last few digits anyway).
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gazza82
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Re: engine code?

Post by gazza82 »

Neil Evans wrote:The 803 engine is easily identified by the oil filter which mounts horizontally, whereas on all the later engines it mounts vertically... The SU carburettor will have made a whole 3BHP difference... :thumbs:
That's 10% though on an 803cc!!
"If you're driving on the edge ... you're leaving too much room!"

Club WebEditor.

Cars: "Project 757" '59 A35 2-door bought in 1971 & Subaru BRZ SE LUX Auto plus "family fleet": Alfa MiTo, Peugeot 206, (Ex '98 Alfa Romeo 156 2.0 TS)
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