<div dir="ltr"><div>The problem I encountered with aftermarket billet rocker arm pedestals and roller rockers (Harland Sharp) is the geometry of the rocker arm movement and the resulting sweep of the roller tip over the end of the valve stem. The goal is to minimize sweep and center over the valve stem. If the pedestals are not designed properly in relationship to the tip of the valve stem, there is excessive or off-center sweep and reduce valve opening and possible valve damage. It's relatively easy to check roller tip sweep. I found that If you try to move the rocker shaft axis closer to the valve stem to better center the sweep or reduce the sweep, the pedestal mounting studs get in the way. I ended up milling the base of the pedestals to improve the centering of the sweep but sacrificed a few thou of valve lift. I don't think the minor increase in roller rocker ratio had much to do with the problem.</div>
<div>P.S. I bought a set of custom length tubular pushrods from Ted and they are working great. </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Sep 17, 2013 at 9:27 AM, Ted Schumacher <span dir="ltr"><<a href="mailto:tedtsimx@bright.net" target="_blank">tedtsimx@bright.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>John, you fell victim to the "someone
sold the wrong Ford lifter" problem. We have run into this a
couple times where the lifter cup and push rod ball don't "like
each other". We supply roller rockers ($285/set), hardened shaft
($69) and tubular alloy pushrods ($69.95). Pushrods available in
2 different tube diameters - 5/16"and 3/8" and whatever length
needed.. We will also produce billet pedestals if you want. A
caution about the use of needle bearing pivots in the rocker arm.
Needle bearings, by design, allow oil to "fall out"of the
bearings. And they are extremely hard. Needle bearings are great
support for a rotating device such as a shaft where it rotates
completely. But, a rocker arm only moves through a small part of
an arc and can cause excessive wear to shaft. Our roller rockers
are bushed with a design that forces oil to lube both the roller
tip and pushrod cup. Please let me now if we can help. Thanks,
Ted<div><div class="h5"><br>
<br>
<br>
On 9/16/2013 7:50 PM, John Wagner wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div class="h5">
<div style="font-family:Courier New,courier,monaco,monospace,sans-serif;font-size:12pt">
<div> As some of you might know the purple TR3 had it's share
of valve train problems at RA. Turns out the plug in the
rocker shaft came loose and starved no. 1 rocker arm, we
missed the K cup S---. But thanks to Joe we were able to make
the group 2 race. After some close inspection of all related
parts, I found something interesting. We use .875 FE block
Ford lifters (352-428) This lifters has a 5/16 dia. push rod
cup,triumph push rod are much larger, closer to 1/2 dia. The
triumph push rods never created a problem but it is not right.
The push rods have no sign of ware, other then a shinny ring.
For all of you that use <span style="font-size:12pt">|Ford
lifters You might want to check this. Our plan know is to up
grade to roller rockers and new push rods.</span><span style="font-size:12pt"> I talked to Richard Good about a
complete assembly for TR2-4. He has rockers and shafts but
no pedestals,"BUT" he is willing to design and build billet
pedestals. So If anyone out there in FOT land that might be
interested in a kit or just new "Good" pedestals send him a
note. </span></div>
<div style="font-family:"Courier New",courier,monaco,monospace,sans-serif;font-size:12pt;font-style:normal;background-color:transparent"><span style="font-size:12pt"> Now for the big question, Ford
used two types of lifters the shell type,like we use or a
solid ,hour glass style with about a 1.5in. shorter push
rod, so if we have to replace push rods, why not go with the
solid lifters (about $80),yes there are a little heavier,but
the rod will be lighter and much more stronger. WHAT SAY
YOU. </span></div>
<div style="font-family:"Courier New",courier,monaco,monospace,sans-serif;font-size:16px;font-style:normal;background-color:transparent"><span style="font-size:12pt"><br>
</span></div>
<div style="font-family:"Courier New",courier,monaco,monospace,sans-serif;font-size:16px;font-style:normal;background-color:transparent"><span style="font-size:12pt"> Thank you</span></div>
<div style="font-family:"Courier New",courier,monaco,monospace,sans-serif;font-size:12pt;font-style:normal;background-color:transparent"><span style="font-size:12pt"> John Wagner</span></div>
<div style="font-family:"Courier New",courier,monaco,monospace,sans-serif;font-size:12pt;font-style:normal;background-color:transparent"><span style="font-size:12pt"> Just the wrench</span></div>
</div>
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<pre cols="72">--
Ted Schumacher
<a href="mailto:tedtsimx@bright.net" target="_blank">tedtsimx@bright.net</a>
<a href="http://www.tsimportedautomotive.com" target="_blank">http://www.tsimportedautomotive.com</a>
108 S. Jefferson St.
Pandora, Ohio, USA 45877
Fax: <a href="tel:419.384.3272" target="_blank" value="+14193843272">419.384.3272</a> (24 Hrs.)
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