For EP, you can port, but not change the bore size of the throttle body, if
you want to stay in the 'stock fuel injection/no weight penalty' zone. For
CSP, you can do anything you want, but an overbore would incur a 10% weight
penalty for prepared.
Stan Whitney
At 09:09 PM 2/7/99 EST, BenoRubin@aol.com wrote:
>I am looking to replace the throttle body on my '87 Civic Si (12valve). The
>rules are not very clear on what I can replace it with for CSP or EP. I am
>putting an engine together for one of the 2 classes, I just have to decide
>which one. Anybody have any suggestions?
>
>Or maybe I should just wait for the new Celica to come out.....
>
>Beno Rubin
>benorubin@aol.com
>http://members.aol.com/BenoRubin
>1987 Honda Civic Si (ES, soon to be CSP or EP)
>
>
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