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FORD COSWORTH GROUP A BREATHER SYSTEM WITH FITTING KIT

FORD COSWORTH GROUP A BREATHER SYSTEM

WITH FITTING KIT

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Group A breather separator system is an aftermarket engine modification, primarily associated with highly tuned Ford Sierra and Escort RS Cosworth models equipped with the YB engine. It is designed to manage excessive crankcase pressure and oil mist in modified, high-performance engines (often 400hp+). 
Purpose and Function
When an engine is modified for increased power and boost, there is an increase in “blow-by” (combustion gases leaking past the piston rings). This causes the crankcase to pressurize, which can lead to: 
  • Increased oil consumption.
  • Oil being forced past gaskets, seals, and turbocharger seals, causing leaks. 
The Group A system addresses this by:
  • Separating oil particles from the air/oil vapor using internal baffles.
  • Returning the separated oil to the engine sump below the oil level to prevent upward pressure.
  • Venting the cleaner air, either to a separate catch tank or to the atmosphere/air filter housing. 
Key Features
  • Design: The design is based on systems used in Group A Touring Car racing to handle serious levels of blow-by and oil surge.
  • Configuration: It typically includes a fabricated aluminium oil separator (often a 3-port design to vent from both sides of the crankcase) and associated hosing and fittings.
  • Compatibility: While originally for the Cosworth YB engine, Spec R and other manufacturers have developed similar systems for other high-performance vehicles like the Mk2 Focus RS.
  • Benefits: It significantly reduces oil consumption and keeps the engine bay cleaner from messy oil vapor, which is a common issue for high-powered Cosworths. 

 

£595.00

FORD COSWORTH GROUP A BREATHER SYSTEM WITH FITTING KIT

SKU 6cf5de0bcb2f-1-2-1-1-1-1-2-1-2 Category Tag

Description

FORD COSWORTH GROUP A BREATHER SYSTEM WITH FITTING KIT

A BRAND NEW HAND MADE FORD COSWORTH GROUP A BREATHER SYSTEM WITH FITTING KIT

MIRROR POLISHED ALUMINIUM TANKS

MIRROR POLISHED BRASS FITTINGS

A GRAUP A FORD COSWORTH GROUP A BREATHER SYSTEM

FORD COSWORTH GROUP A BREATHER SYSTEM WITH FITTING KIT

This product will make a great addition to your engine bay and make your car stand out from the rest.

WHY CHOOSE US

Because we are the UK leaders in bespoke custom work for car engine bay styling.

With over 20 years of expertise, all of our parts are professionally hand made by expert welders. As a result we have been developing our components for around 20 years and still doing well.

If you cannot find the exact item on the website or have any questions regarding an item, please contact us. We are happy to discuss your requirements as we can make any custom products using customer supplied diagrams or patterns.

We have worked with improving everyday cars, drag car and fast rally cars.

OUR Group A breather separator system is an uprated, high-performance crankcase ventilation solution, primarily associated with highly tuned Ford RS Cosworth YB engines. It is designed to manage the significant amounts of blow-by and oil vapor produced by modified engines (400hp+) used in fast road or motorsport applications. 
Key Features and Function
    • Oil Separation: The system uses a specialized, baffled aluminium separator or catch tank to extract oil particles from the air/oil vapor (blow-by gases).
    • Oil Return: The separated oil is typically drained back into the engine sump below the oil level. This prevents the crankcase pressure from forcing the oil back into the separator and saves on oil consumption.
    • Pressure Management: By effectively venting pressure, the system helps prevent the buildup of crankcase pressure that can lead to gasket/seal failures and oil being forced past turbo seals in high-performance engines.
    • Improved Breathing: It allows the engine to “breathe” better, which can improve performance once the engine is properly set up.
  • Configuration Options:
    • Vented to Atmosphere: The cleaner air from the separator can be vented to the atmosphere or a catch tank.
    • Recirculating (as standard): The system can also be routed back into the air filter box/intake system as standard, allowing fumes to be burned by the engine. 
System Components
A complete system typically includes: 
  • A fabricated aluminium oil separator/catch tank (available in 2WD and 4WD configurations for Cosworths).
  • An adaptor to connect to the engine block (often replacing a hexagonal bung on the rear of the cylinder block for the exhaust side).

 

DELIVERY INFORMATION

All orders within the UK and Europe, please allow 7-14 working days because of handling time and for all other international destinations, please allow 7-21 working days for delivery.

Our courier service often cannot provide specific delivery times therefore please ensure upon ordering that you provide a valid address where somebody will be available to receive the parcel between 9am and 5pm.

Have a look at our other products and customer reviews

https://www.youtube.com/shorts/qNy5cPZp_Oc

https://www.youtube.com/shorts/et9AcYqbuwk

https://getbadass.com/product-category/by-vehicle/escort-cosworth/

https://www.youtube.com/shorts/M7T55Q9dYBA

 

This product will make a great addition to your engine bay and make your car stand out from the rest.

WHY CHOOSE US

Because we are the UK leaders in bespoke custom work for car engine bay styling.

With over 20 years of expertise, all of our parts are professionally hand made by expert welders. As a result we have been developing our components for around 19 years and still doing well.

If you cannot find the exact item on the website or have any questions regarding an item, please contact us. We are happy to discuss your requirements as we can make any custom products using customer supplied diagrams or patterns.

We have worked with improving everyday cars, drag car and fast rally cars.

Have a look at our other products and customer reviews ON WEBSITE

 

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