Re: Throttle Body & Intake Manifold Polishing

[DeWitt Harrison <de@aztek-eng.com>]

On Mon, 30 Aug 1999 16:32:16 EDT, Scott Calabrese wrote:
>[ ... ]
>1) What should I use to polish the throttle body and the intake manifold ?
>
>2) Is there a point where the throttle body and intake manifold can be too 
>smooth ?
>I can have the whole thing electropolished, but will it be too smooth ?
>A friend voiced a concern that with carborated motors, you could get things 
>too smooth and the fuel would not mix correctly.
>[ ... ]

Just one remark concerning the "too smooth" concern: the IM is
dry. That is to say the fuel is injected at the intake port and does
not traverse the manifold so the fuel mixing issue as stated is moot.

Matching the IM to intake ports is at least as important as smooth
flow through the TB and IM. This is a manual operation that simple
polishing or honing cannot accomplish.

DeWitt Harrison
Boulder, CO
88 5kcstq