Subject: Peripheral Port Throttle Housing
From: Paul
Date: 7/6/2000, 3:27 PM

Ken Powell wrote:

OK, use the butterflies and shafts out of the Mazda throttle body - good
idea.  Does the 'body' need anything special for a bearing surface for
the throttle shafts or can we just drill the holes in the tube?  Is
there any off the shelf tubing with the correct diameters?  ( I can
check this when I get home and can measure the throttle plates - I will
also take another look at the drawings that you made last year).

Ken P.


Don't know about the tubeing with 1/4 wall. Sounds like special order.
We might need to make it out of bar stock.
 
These are a bit on the small side at only 1.75 inch in diameter.
The shaft too is a bit of a bad fit as it is too long. Perhaps
you could look at a big Holly or something like that
and see if you can find a better shaft and throttle plate.
Something on the order of two inches would give more power I suspect.
1.75 is probably only worth 210 HP at 6000 RPM.

Paul Lamar
 
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throttle-plates-shaft.jpg