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Original Message

What do the tops of the pistons look like?

By Royce Peterson - 02/06/2004 2:38:42 PM; IP 66.161.201.63

If this is a non - stock cam you could have valves hitting pistons. Another possibility that is more likely is improper valve springs that are reaching coil bind when the valves are open fully.

Final possibility is that pushrods are hitting the intake holes.

If you have bent pushrods often the rocker shafts will be scored too. Be sure to remove the rocker arms and inspect the shafts.

The head gasket will not be related to bent pushrods.

You may need a different machinist soon.

Royce

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 <b>What do the tops of the pistons look like?</b> -- <font color=#0000ff>Royce Peterson, <i>02/06/2004</i></font>

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 <a href=../ForumFE/reply.aspx?ID=20116&Reply=20082><img src=../images/reply.png width=30 height=10></a> <a href="#" id="anchor20116" onclick="return false;">Hey Royce: What FE replacement piston has...</a> -- <font color=#0000ff>Dave Shoe, <i>02/08/2004</i></font><script type="text/javascript">
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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