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Connecting air flow meter to plenum chamber

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I am trying to reposition the air flow meter on a Defender 90 fitted with a 3.9 EFI (Hot wire). I would like to change the existing pipe (from a 90 V8 Anniversary model) for a shorter model.

Any ideas where I can get a suitable connecting pipe from as the diameter of the air flow meter outlet is different (wider) to the plenum chamber inlet! Ideally I would like this pipe to be as short as possible.



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You'll either have to buy genuine parts or perhaps use a bit of 70mm Wyrem ducting with a reducing rubber top-hat bush on one end. Note the airflow meters are quite particular about how far away they're mounted, you don't want to be faffing with the length much beyond standard.

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On the flapper I put into the 110, I found a short 90 degree rubber inlet tube from a Ford Mondeo was a perfect fit (and very substantial). Not sure if H/w diameters are bigger though. IIRC it was a 2.0 Mondeo but head off to the scrappy.

My setup was similar to the original RR with the AFM pointing toward the front N/S. Using that tube and making a bracket to attach to the wing, I just managed to get a K&N on (possibly not ideal location if wading though!).

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