Originally Posted by sid

Inspired by Jon's much earlier posts relating to getting more cooler air into the 3.7 Roadster's air box, I've also cut a 4" hole in the box but then used a ducting elbow that came from Screwfix to help draw cool air from the side vents in the bonnet.
A quick spray of matt black and I think it looks quite tidy.


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I've left the original hole in the base of the box open, but I'm hoping that this - very cheap! - addition may improve things.

Only a proper dyno test will confirm one way or the other whether there's any difference in performance, as I must say I can't notice any, but I just feel that anything's got to be better than the standard arrangement.


Borrowed your idea sid. First person I showed it to suggested an angle on the rectangular inlet to better align with louvres.

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Next plan is to somehow block off original air inlet route to reap full advantage of cool air.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone