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1275cc Classic Mini Cooper Power Unit – Engine & Transmission (Gearbox)

Our Classic Mini Motor is guaranteed 12 month, 12,000 miles!

This is a rebuilt 1275cc Classic Mini motor engine assembly from Mini Mania that includes both the engine and the transmission / gearbox.  Both have been rebuilt using our vast experience to ensure the right combination of economy and performance; you get good performance at an economical price!

Our Classic Mini Motor is built to use unleaded gas, the engine should produce between 65 and 75 horsepower (comparable to original Cooper "S").

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; it's ready to run!

This powerunit is built to accept your existing intake/exhaust, cooling and electrical systems.  Bolt it in and Go!

  • Bore size will be <= +.040", 8.8:1 compression, new Water Pump
  • Cast Iron cylinder head, stock valves and 1.25 ratio rockers
  • Cast Iron Verto flywheel with stock clutch
  • Street camshaft with standard lifters
  • Simplex timing chain with tensioner
  • Rod Change gearbox with 3.44:1 final drive

ADDED BONUS

There is NO CORE CHARGE for this Classic Mini Power Unit.  And if you're interested in saving even more money - CALL US TO "TRADE IN" YOUR OLD (1275cc) ENGINE!



Mini Mania Engine Comparison Tool - 1275 cc


  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    

 


Interested in a 1380cc rebuilt engine?  We have those too.

Mini Mania - where Classic Mini Rebuilt Engines are for Sale

Built to use unleaded gas and should produce between 65 and 75 horsepower (comparable to original Cooper "S".)

Classic Mini Rebuilt 1275cc Engine & Transmission

Classic Mini Rebuilt 1275cc Engine & Transmission

Classic Mini Rebuilt 1275cc Engine & Transmission
Selected: 1275cc Standard Performance Engine & Gearbox
Part No: 1275_ENGINE
$7485.98
Qty:
Specially Priced. Discounts Do Not Apply.
Fits the following:
Classic Mini
Rebuilt 1275cc Classic Mini motor engine assembly \includes both the engine and the transmission / gearbox  to ensure the right combination of economy and performance; all at an economical price!
Our Classic Mini 1275cc High Performance Rebuilt Engine comes with:
  • 5-Speed Transmission
  • Aluminum Head
  • 3.4 Differential
  • LCB Header
  • Electric Distributor
  • Carburetor System
  • Distributor Wires
  • Duplex Timing Kit
  • ARP Studs
  • and more. 
Plus, we can rebuild you a Classic Mini Engine designed to your specs from paint color, to final drive ratio, preference of A or A+ block, and output types like pot joints or rubber coupler types. Certain upgraded items like limited slip diffs, straight cut gearsets, lightened flywheels or high lift rockers will add to the cost of the unit.

Call for details 800-946-2642.

Mini Mania Engine Comparison Tool - 1275 cc

Use our Comparison Chart to help you determine the basic modifications and upgrades  you want in your Mini Engine.
  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    


Interested in a bigger engine?  See all our 1380 Classic Mini Engines.

More About Our 1275cc Rebuilt Engines

Our 1275cc Power Unit is a Classic Mini engine rebuild assembly from Mini Mania and is guaranteed 12 month, 12,000 miles Both the Classic Mini engine and transmission have been rebuilt with our vast experience to insure the right combination of economy and performance; you get good performance at an economical price!

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!

Built for unleaded gas, these motors should produce between 65 and 75 horsepower (comparable to original Cooper "S") and are an easy connect to your existing intake/exhaust, cooling and electrical systems.

PLEASE NOTE:  Our standard rebuilt 1275 Classic Mini Motor is built for unleaded gas and produces between 65 and 75 horsepower (comparable to original Cooper "S").  Any engine modified above the standard 1275 engine, will of course have greater horsepower.

 

      • All of our Classic Mini Motors are built for unleaded gas. 
      • 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; it's ready to run!
      • These powerunits are built to accept your existing intake/exhaust, cooling and electrical systems.

Mini Mania - where Classic Mini Rebuilt Engines are for Sale

A 1275cc Rebuilt High Performance Engine That Aims to Thrill!

With an estimated 100 horsepower on tap from this 1275cc engine is great package ready to install and will absolutely thrill you. Built in the USA.

This rebored 1275cc motor includes:

  • high compression (9.75:1) performance pistons.
  • Aluminum cylinder head.
  • a fast road camshaft (276 degrees duration).

This set up will provide the ultimate in performance with great reliability. Includes:

  • water pump and spin-on filter assembly.
  • The transmission is rod change type with provisions for inboard CV joints & 3.44:1 final drive ratio. Special order units with the older remote shift and/or yoke outputs are also available.
  • Clutch, flywheel and all covers are in place.

It's ready to install! Built by the experts at Mini Mania.

Note: All our remanufactured motors have a 12-month or 12,000-mile warranty (which ever comes first).

Note Note: We never charge a core charge BUT we always offer a discount if you are interested in 'trading-in' you old (1275cc) engine for a discount on your new engine! Call us at 800-946-2642!

More about our Engine Program .

Mini Mania Engine Comparison Tool - 1275 cc
  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    

Mini Mania - where Classic Mini Rebuilt Engines are for Sale

 

Highway Cruiser Special
Do you wish you could drive your Classic Mini at least close to modern freeway speeds?
Do you wish you could drive your Classic Mini as a daily commuter car?
Do you wish your Classic Mini engine would be fun to drive before needing another rebuild?
Do you wish you could drive your Classic Mini casually and still enjoy all the attention your Mini always gets?
Do you wish you could have a quiet conversation while you are driving?

Introducing the Mini Mania "1275cc Powerunit" Engines For Sale

These rebuilt Classic Mini 1275cc engines are built with highway cruising in mind:
1- Special camshaft timing results in improved low RPM torque and throttle response.
2- Cylinder Head Valve sizes and porting specially selected for maximum torque at lowest possible RPM's.
3- The transmission has a wide ratio that allows for low speed performance while the final drive ratio of 3.2:1 will provide great freeway comfort.
4- All powerunits are also equipped with an 'overdrive' primary gear that results in a very effective final drive ratio of 3.1:1- the ultimate Cruiser Special!

The Highway Cruiser 1275cc Classic Mini Cooper Power Unit - Motor.

This is a rebuilt Classic Mini motor engine assembly from Mini Mania and is guaranteed for 12 months or 12,000 miles whichever comes first. Both the Mini Motor engine and transmission have been rebuilt with our vast experience to ensure the right combination of economy and performance; you get good performance at an economical price!

Build to use unleaded gas, the Classic Mini engine should produce between 65 and 75 horsepower (comparable to original Cooper "S"). The transmission is the rod change linkage type that uses inboard CV joints.(Special order units with the older remote shift and yoke outputs are also available!) Clutch, flywheel and all covers are in place so it's ready to run!  Just bolt it in and go.

This powerunit is built to accept your existing intake/exhaust, cooling and electrical systems.

Note: There is NO CHARGE for the core. However, if you're interested in saving a little money, call us and let's work out a trade in for  your old (1275cc) engine!

More about our Engine Program .

And want the same on shipping and engine costs?  Check out our WE SHIP IT - YOU SAVE Program.



Mini Mania Engine Comparison Tool - 1275 cc


  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    

PLEASE NOTE:  Our standard rebuilt 1275 Classic Mini Motor is built for unleaded gas and produces between 65 and 75 horsepower (comparable to original Cooper "S").  Any engine modified above the standard 1275 engine, will of course have greater horsepower.

 

      • All of our Classic Mini Motors are built for unleaded gas. 
      • 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; it's ready to run!
  • These powerunits are built to accept your existing intake/exhaust, cooling and electrical systems.

Interested in a 1380cc rebuilt engine?  We have those too.


Mini Mania - Where Your Classic Mini Rebuilt Engine Is for Sale

 

Introducing the new "Killer" series of motors from Mini Mania

Team Mini Mania has the proven experience to build you one of the most competitive motors you can find on any race track.

Built with the latest development components that ensure the best performance for the dollar.

  • A+ block with all steel main caps & 4 bolt center cap
  • EN40B Super Crankshaft with latest technology counterweights
  • Forged Steel 6" long connecting rods
  • Custom 1275cc +.047 forged pistons
  • 310SP camshaft with Adjustable Belt Drive
  • Modern technology Vibration Damper
  • Ultralight competition race flywheel
  • Full race alloy cylinder head with 1.5 ratio rockers
  • Dog engagement gearbox with Limited Slip

Call for more details - Additions, substitutions and exclusions can be discussed!


Mini Mania Engine Comparison Tool - 1275 cc

See all differences in all the 1275cc engines we create.

  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    

Interested in a bigger engine?  See all our 1380 Classic Mini Engines.

More About Our 1275cc Rebuilt Engines

Our 1275cc Power Unit is a Classic Mini engine rebuild assembly from Mini Mania and is guaranteed 12 month, 12,000 miles Both the Classic Mini engine and transmission have been rebuilt with our vast experience to insure the right combination of economy and performance; you get good performance at an economical price!

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!

Built for unleaded gas, these motors should produce between 65 and 75 horsepower (comparable to original Cooper "S") and are an easy connect to your existing intake/exhaust, cooling and electrical systems.


Interested in a 1380cc rebuilt engine?  We have those too.

Mini Mania - where Classic Mini Rebuilt Engines are for Sale

Classic Mini Complete 1275cc High Performance Rebuilt Engine


Same as our 1275HP build but adds an LCB Exhaust header and HIF44 Carb set up. Plus, it comes complete with electronic distributor and wires.  Includes:
  • Aluminum Head
  • 3.4 Differential
  • 4 Speed
  • LCB Header
  • Elec. Distributor
  • Carb System
  • Distributor Wires
  • Duplex Timing Kit
  • ARP Studs

And It's Ready to install in your Classic Mini!


Plus, we can rebuild you a Classic Mini Engine designed to your specs from paint color, to final drive ratio, preference of A or A+ block, and output types like pot joints or rubber coupler types. Certain upgraded items like limited slip diffs, straight cut gearsets, lightened flywheels or high lift rockers will add to the cost of the unit.


Call for details 800-946-2642.


Mini Mania Engine Comparison Tool - 1275 cc

See all differences in all the 1275cc engines we create.

  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    


Interested in a bigger engine?  See all our 1380 Classic Mini Engines.

More About Our 1275cc Rebuilt Engines

Our 1275cc Power Unit is a Classic Mini engine rebuild assembly from Mini Mania and is guaranteed 12 month, 12,000 miles Both the Classic Mini engine and transmission have been rebuilt with our vast experience to insure the right combination of economy and performance; you get good performance at an economical price!

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!

Built for unleaded gas, these motors should produce between 65 and 75 horsepower (comparable to original Cooper "S") and are an easy connect to your existing intake/exhaust, cooling and electrical systems.


PLEASE NOTE:  Our standard rebuilt 1275 Classic Mini Motor is built for unleaded gas and produces between 65 and 75 horsepower (comparable to original Cooper "S").  Any engine modified above the standard 1275 engine, will of course have greater horsepower.

 

      • All of our Classic Mini Motors are built for unleaded gas. 
      • 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; it's ready to run!
      • These powerunits are built to accept your existing intake/exhaust, cooling and electrical systems.

Mini Mania - where Classic Mini Rebuilt Engines are for Sale

 

1275cc Classic Mini Cooper Power Unit – Engine & Transmission (Gearbox)

Our Classic Mini Motor is guaranteed 12 month, 12,000 miles!

This is a rebuilt 1275cc Classic Mini motor engine assembly from Mini Mania that includes both the engine and the transmission / gearbox.  Both have been rebuilt using our vast experience to ensure the right combination of economy and performance; you get good performance at an economical price!

Our Classic Mini Motor is built to use unleaded gas, the engine should produce between 65 and 75 horsepower (comparable to original Cooper "S").

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; it's ready to run!

This powerunit is built to accept your existing intake/exhaust, cooling and electrical systems.  Bolt it in and Go!

  • Bore size will be <= +.040", 8.8:1 compression, new Water Pump
  • Cast Iron cylinder head, stock valves and 1.25 ratio rockers
  • Cast Iron Verto flywheel with stock clutch
  • Street camshaft with standard lifters
  • Simplex timing chain with tensioner
  • Rod Change gearbox with 3.44:1 final drive

ADDED BONUS

There is NO CORE CHARGE for this Classic Mini Power Unit.  And if you're interested in saving even more money - CALL US TO "TRADE IN" YOUR OLD (1275cc) ENGINE!



Mini Mania Engine Comparison Tool - 1275 cc


  1275_ENGINE 1275HC_ENGINE 1275HP_ENGINE 1275HP_ENG_ULT 1275HP_ENG_5SPD
Cast Iron Head      
Aluminum Head    
3.4 Differential  
3.1 Differential          
3.2 Differential        
4 Speed  
5 Speed        
LCB Header      
Elec. Distributor      
Carb System      
Distributor Wires      
Duplex Timing Kit    
ARP Studs    

 


Interested in a 1380cc rebuilt engine?  We have those too.

Mini Mania - where Classic Mini Rebuilt Engines are for Sale

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