AIRBOX TR4-4A TWIN 45DCOE

TR4-4A suitable for twin 40 to 45DCOE carbs with an inlet of 80mm diameter

NOTE: The nature of the air box is such that inner wing modification will be necessary on TR2-4A cars. Centre holes are 128mm centre to centre. This means, the centre two holes are 128mm apart which is defined by the manifold being used. All the ones we have seen are 128mm apart.
The box is 82mm (3.25") deep therefore the maximum size of trumpet that can be accommodated would be 62mm (2.44") long.

This part is listed on the following page of the website, where further information and background reading may be found.

Fuel and braking systems » AIR BOXES

Q: I've got a Revington TR airbox fitted to my car. The lid is not airtight and rattles badly under hard acceleration and the 6 self tapping screws work loose. How can prevent the rattling and what form of seal/gasket and fasteners work best?

A:

The retention of the lid can be improved by using 'U' nuts on the flange for the self-tapping screws to tighten into. Use RTR5032 nut and SS1060462 screw.

Sealant may not really worth it as the small amount of unfiltered air entering will not affect the engine, however you can make an instant gasket with a tube of RTV rubber sealant. This can be purchased on the internet. Farnell sell a suitable product.

To ensure the sealant sticks to one side only, say the main part of the box, put cling film on the mating face of the lid and screw the lid down. Then the sealant has set you should have a suitable gasket that will prevent almost all air entering and should prevent rattling too.

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