Classic Mini Engines Built For You

Off the Rack or Built To Suit

Like everything else  ---   Prices are going up.  Place your order Today and Save.  
And remember, you only pay a deposit on your order.  You don't pay until we ship your engine to you.
800-946-2642 for a FREE ESTIMATE
and Get Started On Building Your Stock or Custom Dream Classic Mini Engine

See our new Classic Engine Comparison Chart to learn the difference in our 1275 and 1380 engines.

Quick Links To Sections in This Article

Mini Mania's Classic Mini Engine  and Transmission - 1275cc

We use a Mini Mania 1275cc Power Unit that is a Mini Classic engine repair assembly that is guaranteed for a period of 12 months or 12,000 miles. Using our extensive experience, we rebuilt both the Classic Mini engine and transmission to ensure the best possible balance of economy and performance; you get superb performance at a reasonable cost!

The transmission is the rod change linkage type that uses inboard CV joints & 3.44:1 final drive ratio. (Special order units with the older remote
shift and yoke outputs are also available!) Clutch, flywheel, and all covers are in place!

Ready To Install And Run!

These Mini motors for sale are designed for unleaded fuel and should have 65-75 hp (similar to the original Cooper "S"), as well as being easy to connect to your current intake/exhaust, cooling, and electrical systems.

Components Include:

  • Cast Iron cylinder head, stock valves and 1.25 ratio rockers
  • Cast Iron pre-Verto flywheel with stock clutch
  • Street camshaft with standard lifters
  • Simplex timing chain with tensioner
  • Rod Change gearbox with 3.44:1 final drive

 1275inline Mini Cooper     For more details see: 1275cc Engine  or our complete 1275cc PowerUnit (Motor and Transmission)

Mini Mania's Classic Mini Motor- 1380cc   

The "Ultimate Street Performance Engine" from Mini Mania is the result of 30 years of building and racing our fabulous Mini Cooper. Because drivability and reliability are of utmost importance, only components from well-established suppliers are utilized.


These Mini motors are ready to bolt in and run, which means, of course, that they are already mated with transmissions.

Our Basic 1380 cc Mini motor includes:

  • Powermax 73.5mm squeeze-cast pistons
  • 10:1 Compression
  • Elgin custom ground camshaft driven by a new timing chain and gears.
  • A+ Block, Crank, and Rods for best big bore reliability
  • Our CAM103 set at 108º for best horsepower
  • Aluminum Alloy cylinder head with A+ 'sintered' rocker arms
  • Latest Rod-change gearbox with A+ drop gears
  • Standard ratio 4-speed with your choice of final drive gears


 For more details see: 1380cc PowerUnit  Motor

Mini Mania's "Killer Engine" Racing Motor

Let us build you a brand new "Killer" race engine that'll give you the edge you’ll need to put you in the Winner's Circle!  Built with the latest cutting-edge components that insure the best performance for the dollar.  

            Learn More about our "Killer Engine" Program!

Upgrades Worth Considering For Both 1275cc and 1380cc Mini Motors


Our expert mechanics in our Mini Engine Shop can walk you through the steps, suggesting options and performance enhancements to get you the get the Mini engine the way you want.

Classic mini engines for sale can be optimized by including any or all options below:

  • Camshafts
  • Distributors
  • Headers
  • Rocker Assembly
  • Exhausts
  • Carburetors
  • Flywheels
  • Gearbox Shifter

It all depends on what you’re looking for.

Used & Tested 1300 A+ Engine & Transmission


We offer pre-owned units that can easily be fitted to all models from 1959 forward. These engines are thoroughly tested by our Mini Mania Engine Shop for compression, oil pressure and blow-by and are an excellent alternative to a rebuilt engine.


1380cc Shortblock

We've done the hard work, you can do the final assembly with your favorite head, transmission, and ancillaries.

1380shortblock Mini Cooper      Item: 1380cc-SHORT-BLOCK  

1380cc DIY Kit

Ideal kit for the Do-It-Yourself engine builder. Special kit includes AE big bore pistons, our special 1380cc camshaft and lifters, +.020 main & rod bearings, and the HIF44 needle that is ideal for the 1380cc engine!

mmkt1380 Mini Cooper     Item: MMKT1380   


Visit Our Mini Mania Engine Shop

Check Out Our Mini Mania Engine Shop!  We’ve expanded our shop to handle our engine building tasks in-house. And don’t forget to watch the video!

All our Classic Mini Cooper Engines all on One Page

See all our Classic Mini Cooper Engines.

Get Started Down The Road To Your New Classic Mini Cooper Engine

Mini Mania is ready to build you the Mini motor of your dreams!
Choose from the Classic Mini motors described below, or add any options to meet your needs. Five-speed transmission, performance camshaft, cylinder head upgrade, hi-lift rockers -- the sky's the limit!


"If you can dream it, we can build it!"

Check Out Our Mini Mania Engine Shop

Mini Mania's Engine Shop is expanding to handle many of the tasks of reconditioning items in-house.  Learn More and check out the video!

Make The Call Today! Get a FREE ESTIMATE on what it takes to get your Classic Mini driving like a champ!
Classic Mini Cooper Engines For Sale At Mini Mania! It's what we do!

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