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Original Message

Hey Royce: What FE replacement piston has...

By Dave Shoe - 02/08/2004 12:37:20 AM; IP 216.243.176.34

...mispositioned valve reliefs? I believe it might be one type of TRW 390 piston, but I don't recall. Maybe a Silvolite had the miscast valve reliefs.

Combining the weak stock valve springs with the faster and taller ramp profile of the new mild cam, and pistons which offered incorrect valve head clearance might explain the valve contact issue.

I can't find info on which cast FE piston had the mispositioned valve reliefs.

Shoe.

This thread, so far...

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Collapse <a href=../ForumFE/reply.aspx?ID=20082&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20082" onclick="return false;">Bent Pushrods</a> -- <font color=#0000ff>Tim P., <i>02/06/2004</i></font><script type="text/javascript">
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Bent Pushrods -- Tim P., 02/06/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20088&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20088" onclick="return false;">What do the tops of the pistons look like?</a> -- <font color=#0000ff>Royce Peterson, <i>02/06/2004</i></font><script type="text/javascript">
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What do the tops of the pistons look like? -- Royce Peterson, 02/06/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20091&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20091" onclick="return false;">RE: What do the tops of the pistons look like?</a> -- <font color=#0000ff>Tim P., <i>02/06/2004</i></font><script type="text/javascript">
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RE: What do the tops of the pistons look like? -- Tim P., 02/06/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20092&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20092" onclick="return false;">The crank is probably fine.</a> -- <font color=#0000ff>Royce, <i>02/06/2004</i></font><script type="text/javascript">
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The crank is probably fine. -- Royce, 02/06/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20094&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20094" onclick="return false;">RE: The crank is probably fine.</a> -- <font color=#0000ff>Tim P., <i>02/07/2004</i></font><script type="text/javascript">
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RE: The crank is probably fine. -- Tim P., 02/07/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20095&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20095" onclick="return false;">Are you sure the head gasket failed?</a> -- <font color=#0000ff>Dave Shoe, <i>02/07/2004</i></font><script type="text/javascript">
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Are you sure the head gasket failed? -- Dave Shoe, 02/07/2004

RE: Are you sure the head gasket failed? -- Tim P., 02/07/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20105&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20105" onclick="return false;">The "steel" guides are actually cast iron.</a> -- <font color=#0000ff>Dave Shoe, <i>02/07/2004</i></font><script type="text/javascript">
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The "steel" guides are actually cast iron. -- Dave Shoe, 02/07/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20107&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20107" onclick="return false;">RE: The "steel" guides are actually cast iron.</a> -- <font color=#0000ff>Tim P., <i>02/07/2004</i></font><script type="text/javascript">
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RE: The "steel" guides are actually cast iron. -- Tim P., 02/07/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20108&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20108" onclick="return false;">Stock valve springs? Red flag!</a> -- <font color=#0000ff>Royce, <i>02/07/2004</i></font><script type="text/javascript">
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Stock valve springs? Red flag! -- Royce, 02/07/2004

RE: Stock valve springs? Red flag! -- Tim P., 02/07/2004

Collapse <b>Hey Royce: What FE replacement piston has...</b> -- <font color=#0000ff>Dave Shoe, <i>02/08/2004</i></font>

Hey Royce: What FE replacement piston has... -- Dave Shoe, 02/08/2004

RE: Hey Royce: What FE replacement piston has... -- Tim P., 02/08/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20120&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20120" onclick="return false;">They are not necessarily mis positioned but</a> -- <font color=#0000ff>Royce, <i>02/08/2004</i></font><script type="text/javascript">
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They are not necessarily mis positioned but -- Royce, 02/08/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20121&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20121" onclick="return false;">Maybe the worn guides caused the contact.</a> -- <font color=#0000ff>Dave Shoe, <i>02/08/2004</i></font><script type="text/javascript">
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Maybe the worn guides caused the contact. -- Dave Shoe, 02/08/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20127&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20127" onclick="return false;">RE: Maybe the worn guides caused the contact.</a> -- <font color=#0000ff>Tim P., <i>02/08/2004</i></font><script type="text/javascript">
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RE: Maybe the worn guides caused the contact. -- Tim P., 02/08/2004

Collapse <a href=../ForumFE/reply.aspx?ID=20128&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20128" onclick="return false;">RE: Maybe the worn guides caused the contact.</a> -- <font color=#0000ff>Tim P., <i>02/08/2004</i></font><script type="text/javascript">
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RE: Maybe the worn guides caused the contact. -- Tim P., 02/08/2004

RE: Maybe the worn guides caused the contact. -- Mike, 06/30/2005

very odd clues -- John, 06/30/2005