[Shotimes] Intake runner horns

[Paul Nimz]

Here's some sights that further explain things.
http://rogueperformance.com/UpperIntakeManifold.html#e

http://www.howstuffworks.com/question517.htm



Paul Nimz
'97 TR
'93 EG mtx



----- Original Message ----- 
From: <cmichaelo@optonline.net>
To: "shotimes" <shotimes@autox.team.net>
Sent: Thursday, July 29, 2004 11:59 AM
Subject: [Shotimes] Intake runner horns


> When I purchased the BB butterflies+intake runners many years ago, it was
recommended (by ShoShop) to remove the horns. Since then I've heard that
some people shorten them instead for better performance.
>
> Does this mod improve throttle response or HP by any noticable amount?
>
> How much should they be shortened?  Is this a simple volume calculation,
i.e., since the runner volume increases by
>
> dVrunner = (44 - 41) x pi x Lrunner
>
> then the volume of the horn must be reduced by the same amount so that the
new horn length, Lhorn_new, becomes
>
> Lhorn_new = (Vhorn - dVrunner) / (Dhorn x pi)
>           = (Dhorn x pi x Lhorn - dVrunner) / (Dhorn x pi)
>
> and where Dhorn is the horn diameter.
>
> Michael
> 94MTX,green,BOS+
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