Velocity stacks will improve the aerodynamics of the intake, causing
less turbulence, thus allowing more air (and fuel) into the cilinders
giving more power. Length of the stacks will play a role in power
delivery, in general: long stacks improve low down torque, short stacks
are for high end power, but do not expect miracles.
Cold air for the inlet will give even more kilograms of oxigen into the
cilinders, so you can add more fuel to the mixture (happens more or less
automaticly in a carb) to burn which will give you some more power.
Usually SU's are not equipped with velocity stacks but they would
benefit from it.
In the end you may need a slightly larger bore than standard or straight
through exhaust.
Kees Oudesluijs
NL
Michael Couch schreef:
> Any thoughts on using short velocity stacks inside a cold air box on a 100M
> to improve flow?
>
>
>
> I just rebuilt the 1 > SUs and have the original cold air box (it was in
> the pile of spare parts I got with the car and was wrapped in duct tape and
> full of other parts!). The front of the cold air box had been trimmed back
> for some reason but thanks to the adapter provided by British Car
> Specialists, Im able to get the air duct hose attached. Im using a K&N
> cone filter on the end that fits nicely behind the front grille.
>
>
>
> Velocity stacks improved output a little on my Sprites so I was wondering
> about using them on the BN2 with the cold air box.
>
>
>
> Thanks for any comments.
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