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Mini Mania kits are priced to save you money. Get all of the components you need for less than if purchased separately.
Classic Mini big bore kit 1380CC engine do-it-yourself kit

Classic Mini big bore kit 1380CC engine do-it-yourself kit

Classic Mini big bore kit 1380CC engine do-it-yourself kit
Part No: MMKT1380
Specially Priced. Discounts Do Not Apply.
Fits the following:
Classic Mini
Sprite & MG Midget
Morris Minor
Ideal kit for the Do-It-yourself engine builder. Special kit includes AE big bore pistons, our special 1380cc camshaft and lifters, +.010 main & rod bearings and the HIF44 needle that is ideal for the 1380cc engine! You provide the engine and remaining components.
I have a 1098, 1966 Sprite. I want to rebuild for a streetable cam, not too lumpy. What kit And bore is recommended?

I'm afraid we can't give much advice here as we don't rebuild the 1098's. The parts available for that engine are a bit limited for cost-effective performance vs. the 1275. That being said, boring the engine and improving flow in the head and adding larger valves will always increase the performance of any engine. The street camshaft most used in our builds is this one:


Spridget Mania Tech Team

The Spridget Parts and Accessories Experts

So you just have your 1275 block bored over to 1380? That sounds like a big jump
Yes, but it's a MUST that the block not be more than +.020 to start with (standard is better) since 1380's are offset bored to leave enough material between the two middle cylinders (2-3).

Good luck

Mini Mania Tech Team
Are flat top pistons available?

No, not currently. The largest flat-top piston we offer are these:


Not in stock but can be ordered. Would go to 1330cc.

Morris Part Team

How's this possible in a moggy 1098 engine?
You'd need a 1275 engine to start with. Preferably one that hasn't been bored to more than .020" first. The small-bore engines can't go that large.

Morris Minor Part Team
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