10cc engine

[stuupnorth]

hi all
looking to sell this engine that I have had around for a while what's it worth ?
its a 1098 cc Mg midget engine code 10cc
it was in a shed for a few years before I acquired it but the owner removed the plugs!!! so I believe the rings have seized the pistons I have filled the bores with various lubes plus gas being the latest but the crank isn't budging
so it needs a full strip down and rework
its complete with carbs (would need a total overhaul) and with the 12g295 head

IMG_20200315_145824352.jpg (3.59 MiB) Viewed 993 times

IMG_20200315_150228810.jpg (3.7 MiB) Viewed 993 times

IMG_20200315_145845249.jpg (3.3 MiB) Viewed 993 times

IMG_20200315_150253358.jpg (3.46 MiB) Viewed 993 times

I afraid its a pick up only and I'm in the North east Aberdeenshire

[don58van]

Hi
I can't hazard a guess at the right asking price...but I can tell you that the block with its crank and that head would be keenly sought-after by knowledgeable A-series fans.
Don

[philthehill]

Even in its seized state - as an assembly (parts as pictured) the engine is worth a minimum of £725 plus.

The main differences between a 10CC engine and a normal 1098cc engine block/crankshaft (10CG) is that the 10CC mains are 2" dia and the flywheel bolt PCD is larger.

The 10CC engine was built for the Formula Junior racing car class which specifies that so many production engines have to be manufactured.

[ManyMinors]

The 10CC engine was built for the Formula Junior racing car class which specifies that so many production engines have to be manufactured.

I thought that Formula Junior only ran until 1963? Since the 10CC engine wasn't available until sometime after that, the above would seem unlikely. Certainly I have never seen a 10CC engine requiring a rebuild fetch the sort of sum you suggest.
The earlier 1071 "A" Series engine was used in Formula Junior racing but is a very different animal.

[philthehill]

As regards value!

Breaking the engine down into components - these are values being obtained for the items for sale on the likes of 'e' bay.

Flywheel...………..£100 plus - if you can find one.

12G295 head...…£300 - £400.

HS2 carb/manifold assy....£200 plus

Crankshaft...…….£200.

Engine block...…£200 plus. The 10CC engine block (casting number 12G432) is different to the 10CG block the main difference being the size of the mains.

So adding up the separate items the bottom price of £725 is realistic.

The engine being offered for sale whilst currently seized is not scrap so still commands a premium price.

As regards the Formula Junior comment I will look into it.

https://formulajunior.com/introduction/

The 10CC engine was introduced in March 1964 as part of the upgrades/re-styling of the H-AN8/GAN3 models.

The 10CC engine was built for competition use and BMC offered a whole host of tuning extras through its Special Tuning Department at Abingdon.

Regarding the seized condition of the engine - I would remove the crankshaft and free up the pistons in the bores individually. Trying to free off all four pistons in one go is a recipe for more damage.