Throttle Body Installation for your Mini

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Silicon spray applied to injectors to allow fitment into the throttle bodies

No More Carbs... Throttle Bodies: Power and Smoothness

Welcome back to our DIY Mini Bogus 2 Restoration series! Looking to ditch the carbs and upgrade your Mini's performance? Throttle bodies offer a winning combination of power and smoothness, and in this installment of the Bogus 2 "Keeping Your Mini Alive" series, we'll guide you through the installation process.

Choosing the Right Components:

Gone are the days of carburettors! Throttle bodies deliver precise fuel delivery, leading to smoother running and improved power output.

Fuel Injectors:

Canems selected Weber Pico 250cc/minute fuel injectors for our Bogus 2 Mini. These compact injectors are ideal for tight engine bays like the Mini's

Throttle Bodies

We initially aimed for Jenvey TB 118mm long DCOE style throttle bodies (42mm ID). However, these required bonnet modifications for clearance.  To achieve the necessary clearance, Jenvey supplied replacement THS45i 91mm long throttle bodies (42mm ID). These, even with trumpets, provided sufficient space and injector placement! Discover our range of classic Mini Throttle Bodies and parts >

250cc/minute Fuel injectors fitted to the 1994 classic Mini with the throttle bodies
91mm long throttle bodies fitted with the Mini Sport 7 port engine

Benefits:

  • These throttle bodies mount directly onto the Weber 45 stud pattern, simplifying installation.
  • The Weber throttle linkage ensures full throttle range. We recommend installing a bump stop under the throttle pedal to prevent strain on the linkage.

Unsure which parts you need? Our team can help you select the right components for your Mini's fuel system. Contact us for expert advice!

Throttle Potentiometer:

For precise fueling, the system utilises a throttle potentiometer, which relays throttle position information to the ECU.

Injector and Fuel Rail Installation:

The injectors feature O-ring seals for a secure fit within the throttle bodies. We used silicone spray to aid installation without damaging the seals. The fuel rail then sits behind the injectors, supplying fuel and holding them in place.

A throttle potentiometer used for precise fuelling
Silicon spray applied to injectors to allow fitment into the throttle bodies

Trumpets and Air Filtration:

As you can see, the trumpets sit close to the slam panel. While running without air filters might seem appealing for aesthetics, it significantly reduces engine lifespan. We recommend air filter socks for everyday use.

 

Throttle body set up including trumpets in the classic Mini

Need Help?

Installing throttle bodies can be a complex process. If you encounter challenges or require

technical advice, our experienced team is here to assist you. 

Contact Mini Sport Ltd. today for expert support

Explore Our Range of Products

From tanks to pumps and everything in between, we've got your Mini's fuel system covered. Discover high-quality components to enhance your vehicle's performance and reliability.

Want to read Keeping Your Mini Alive 6th Edition Magazine? Download the PDF here

Front Cover of the Keeping Your Mini Alive Magazine

Don't miss out on the rest of the Bogus 2 Series!

This blog series is your go to for a guide to taking your Mini from a bare shell to a road-worthy classic. Check out the rest of the series for tips and advice from our Mini Experts for every stage of your Mini restoration!

Stay Connected with Mini Sport:

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This guide provides general guidance and a step-by-step approach to build your Mini's Build. It is always recommended to contact a trusted professional if you are unsure about any part of the process.