D16Y4 Air Intake Diameter?

[Alvis]

Hi guys,

Does anyone know the air intake diameter on a D16Y4?

I know the throttle body is 56mm on the D Series, but I've searched and searched on the net with no luck on the air intake diameter (B series air intake diameter is 65mm).

Any help would be great :)

Thanks,

[mocchi]

you mean the tb inner diameter?

[Alvis]

you mean the tb inner diameter?

not the tb - the actual intake piping itself.

Hang on - I'll try to explain: I'm thinking of buying a mugen airbox, which was designed for the EK9 B series with a 65mm air intake piping, and fit it to a D series engine (not a common mod I know. But I don't want an open pod filter for the fact I think they just suck hot air and will be defected in NSW anyway so a waste of $300...).

Now, common logic would suggest the D series intake has a smaller piping diameter than the B series (I thought the D series was 60mm but not 100% sure) so i need to know this in order to buy a reducing coupler to make it fit.... any help would be great :-)