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Go Back   Australian Ford Forums > Club and Speciality Forums > Forum Community Car Clubs > OzECruisers (E/N/D Series) > OzECruisers General Discussions

OzECruisers General Discussions E/N/D vehicles General Discussion ONLY. NO TECH THREADS

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Old 20-01-2007, 02:24 AM   #1
jjj
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Default Why did FORD use 55mm I.D bellmouths?

Since owning the EL for about 2 years now i ended up getting an EF intake with lid from the wreckers for $40. Anyway i have noticed both bellmouths in the airbox lid have an internal diameter of roughly 55mm. The EF trumpet inside the lid goes from 80mm to 55mm and the EL/AU lid goes from about 75mm to 55mm.

Why did ford designers go with the 55mm internal diameter?

does this give better low down torque compared with 80mm openings?

I know the intake pipe length does matter but why the small opening?

cheers..........

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Old 20-01-2007, 10:36 AM   #2
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I do believe it was primarly done for NVH. However a belmouth opening is far more efficent than the equivelent open end. AU XR8 boxes will have an aluminium 70mm bellmouth in them iirc.
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Old 20-01-2007, 11:35 AM   #3
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It's to make the Windsor drivers not feel so bad about having a 55mm MAF ;)
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Old 20-01-2007, 04:58 PM   #4
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$40 buck for an EF intake lid!! u got ripped hard! got mine for less than 20
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Old 20-01-2007, 05:55 PM   #5
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i'm not sure, I chopped it off, didn't seem to make any differance either way.
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Old 20-01-2007, 06:03 PM   #6
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Quote:
Originally Posted by Dunky13
$40 buck for an EF intake lid!! u got ripped hard! got mine for less than 20
Nah mate, got all the ef intake pipes, hose clamps, rocker cover bolt, airbox lid and airbox tray. I think $40 was a good buy considering everything is in good nic.

cheers........
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