hey guys,
just after some advice as to what manifold port size would be best.... i have an L18 and am looking for a manifold for my twin 45 webers. just curious as to what port size would be best suited for a road car. (e.g. not too sluggish in low revs) the webers are choked down to 38's. thanks

a tapered inlet runner is best, but obviously can;t be acheived in every application.

if you could port your manifold to go from - say, 38mm to 35mm and then port your head to go from 35mm down to your valve recess size then that would be ideal.

lots of labour though...

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