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From digest.v7.n523 Sat Nov 1 02:27:00 1997
From: "Josh & Chelsi" <>
Date: Thu, 30 Oct 1997 20:55:28 -0700
Subject: [none]

There are several variants of gears for the s14 engine. I will list all of the gears I know of and explain the to the best of my knowledge.

  1. A Dinan gear as far as I know is the factory evolution gear. It goes on the exhaust cam shaft and retards the exhaust timing by 4 degrees. I have read in Dinan literature that the gear gives to the mid range and takes 1hp off of the top.
  2. Peter McHenry makes a custom machined cam gear that advances the intake cam 5 or 6 degrees (I can't remember). He said that his gear adds to the midrange without taking from the top end. It was his belief that the factory evolution gear took more than just 1hp off of the top end (I think he said it took almost 7hp). Peter can be reached at (910) 761-0643.
  3. Frank Fahey makes a cam gear that advances the exhaust gear 5 or 6 degrees. It has been a long time since I talked to Frank, but I think that he said something to the effect that the factory gear took more than 1hp off of the top end. He also said he got excellent results with his gear from 30-90 mph. I can't remember Franks phone number.
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