Ah... found your answer.-.> Gerard
GOLD SEAL EXCHANGE ENGINES.
BMC like many firms did an exchange scheme for worn engines, one was
the Gold Seal engine, a complete engine ready to fit and painted gold
in colour. The other was the Silver Seal exchange engine, basically a
short-block for the owner/garage to fit the old head,sump, and
ancillaries onto.
Both used a similar system of engine numbering, the original number
being struck off. Initially all engines in the scheme were prefixed
8G, soon a better system followed:-
'A' series engines were prefixed 8G,- 803cc, 848cc, 948cc, 1098cc, 1275cc.
'B' series were prefixed 84G,- 1200cc, 1489cc, 1588cc, 1622cc, 1798cc.
'C' series were prefixed 86G,- 2693cc, 2912cc.
The code after was to do with rebore/regrind sizes and a job number.
At 10:17 PM -0400 9/3/03, Frank Clarici wrote:
>I have this engine here, it came with my latest bugeye (on the floor
>not bolted in) The ID tag says... 8G 150 W 3653 and it has AA
>stamped under the numbers.
>Ok, so it's an 803 or an 850? Nope. All the characteristics of a
>1098 but no 1098 or 1100 stamp or tag.
>It has side lifter covers, 7.25" clutch, stamped steel front pully.
>Now the weird stuff.....It has a blanked off (factory cast) fuel
>pump block off, a 1275 type plastic dip stick tube, a 2" EN16T crank
>but with only 4 bolts for the 1098 flywheel. It has a pin driven oil
>pump. The pistons measure 2.54 just like a 1098. Didn't 2" main
>1098s have a harmonic balancer on the pully? Mini's did.
>Is this the "Let's use what's left and what's new" to make the very last 1098?
>It has never been apart. all the lock tabs were never undone. All
>std bearings and pistons, not too bad for wear, and sludged up like
>I never saw before.
>It is a rear wheel drive engine and I have to say it is a 1098.
>My questions are....
>
>What year/model could this have come out of?
>Can I use this 2" crank in a 1275 block but with the 1098 clutch due
>to the flywheel bolt pattern?
>Can I stick a harmonic balancer on it?
>Or does anybody want to buy a 1098?
>--
>Frank Clarici
>Toms River, NJ
>Down to just a few Sprites
http://www.exit109.com/~spritenut
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