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Re: [6pack] Rockers or Rollers?

To: janah@att.net, 6pack@autox.team.net
Subject: Re: [6pack] Rockers or Rollers?
From: "Sally or Dick Taylor" <tr6taylor@webtv.net>
Date: Sat, 31 Jan 2009 07:30:24 GMT
Janah---It would probably more costly to get your rockers rebushed than 
purchasing new (stock) ones. Take a look at the rocker shaft, as these usually 
wear out quicker than the rockers. (Measure the shaft, or move the shaft down 
into an unworn area to see if it feels less loose). Stock rockers can give many 
miles of good service, and are a good bet. As others have wrote, the rollers 
are mostly for changing the ratio, and or part of a high performance cam 
go-along. There are some side benefits for these that can reduce valve guide 
wear.

I'm guessing that the "clatter" you hear is not really "tappet" or cam follower 
noise, but some looseness in the rocker and shaft, along with flattening in the 
face of the rocker tips. Check the valve lash to be sure you can't adjust out 
of this.

The pedestals can last "forever". And the springs between the rockers can do a 
good job. Spacers in their stead do little if any to improve performance. 
Marketing claims for these spacers say they reduce friction. I would think 
keeping the rocker tip to valve stem more consistant and would be a more valid 
point for race engines. I have no way of proving or disproving any of this 
rambling!

Dick
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