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Original Message

The crank is probably fine.

By Royce - 02/06/2004 11:23:26 PM; IP 67.29.198.88

FE cranks are pretty tough. You are lucky a rod didn't go through the side of the block.

Somebody didn't check valve to piston clearance. Not a good sign. What else did he not check?

You need to double check everything a machinist does to you unless he is someone you can trust implicitly. This fellow is not building a lot of trust right now.

If these are cast pistons, often the valve reliefs are not oriented properly to the center of the valves. For this reason the reliefs while deep enough will still catch a valve on a high RPM blast. The same problem can occur with forged pistons but not as often.

If you have oversized valves then this problem can occur even with a stock cam.

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 <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 <b>The crank is probably fine.</b> -- <font color=#0000ff>Royce, <i>02/06/2004</i></font>

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