Original Message
Eek! Compression Info Nasty
By John - 11/29/2004 8:44:34 PM; IP 142.177.82.61
My compression test about 195 psi in all cylinders. The fact yours is only at 100 psi yields a poor built-in compression ratio. If the engine was merely worn, you would be showing a lot more difference between cylinders I would think. It is very important to pick a cam designed to work with the engine's compression ratio. Seems to me, you are way out. Either change your pistons or cylinder heads to fix this.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=23368&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23368" onclick="return false;">&gt;&gt;New 390 is weak, need pointers&lt;&lt;</a>&nbsp;-- <font color=#0000ff>spinnerbait42, <i>11/27/2004</i></font><script type="text/javascript">
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 >>New 390 is weak, need pointers<< -- spinnerbait42, 11/27/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23369&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23369" onclick="return false;">adding info 2 my setup</a>&nbsp;-- <font color=#0000ff>spinnerbait42, <i>11/27/2004</i></font><script type="text/javascript">
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 adding info 2 my setup -- spinnerbait42, 11/27/2004
 RE: adding info 2 my setup -- giacamo, 11/28/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23399&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23399" onclick="return false;">Compression Info</a>&nbsp;-- <font color=#0000ff>spinnerbait42, <i>11/29/2004</i></font><script type="text/javascript">
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 Compression Info -- spinnerbait42, 11/29/2004
Collapse <b>Eek! Compression Info Nasty</b>&nbsp;-- <font color=#0000ff>John, <i>11/29/2004</i></font>Eek! Compression Info Nasty -- John, 11/29/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23405&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23405" onclick="return false;">Rebuild or Blower</a>&nbsp;-- <font color=#0000ff>Martin Micheelsen, <i>11/30/2004</i></font><script type="text/javascript">
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 Rebuild or Blower -- Martin Micheelsen, 11/30/2004
 How about N2O!? -- spinnerbait42, 12/01/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23406&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23406" onclick="return false;">RE: Another opinion.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>11/30/2004</i></font><script type="text/javascript">
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 RE: Another opinion. -- Gerry Proctor, 11/30/2004
 RE: Another opinion. -- spinnerbait42, 12/01/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23408&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23408" onclick="return false;">RE: &gt;&gt;New 390 is weak, need pointers&lt;&lt;</a>&nbsp;-- <font color=#0000ff>mikee likee, <i>12/01/2004</i></font><script type="text/javascript">
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 RE: >>New 390 is weak, need pointers<< -- mikee likee, 12/01/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23410&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23410" onclick="return false;">RE: Another opinion</a>&nbsp;-- <font color=#0000ff>spinnerbait42, <i>12/01/2004</i></font><script type="text/javascript">
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 RE: Another opinion -- spinnerbait42, 12/01/2004
 Remove ALL sparkplugs when doing compression test -- John, 12/01/2004
 RE: Another opinion -- mikee likee, 12/01/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23415&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23415" onclick="return false;">RE: Another opinion</a>&nbsp;-- <font color=#0000ff>giacamo, <i>12/01/2004</i></font><script type="text/javascript">
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 RE: Another opinion -- giacamo, 12/01/2004
 RE: Another opinion -- Tim P., 12/05/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23613&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23613" onclick="return false;">Compression Test, Changed carb</a>&nbsp;-- <font color=#0000ff>spinnerbait42, <i>12/29/2004</i></font><script type="text/javascript">
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 Compression Test, Changed carb -- spinnerbait42, 12/29/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23615&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23615" onclick="return false;">80k volts to plugs!</a>&nbsp;-- <font color=#0000ff>mikee likee, <i>12/29/2004</i></font><script type="text/javascript">
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 80k volts to plugs! -- mikee likee, 12/29/2004
 RE: 80k volts to plugs! -- John, 12/29/2004
Collapse <a href=../ForumFE/reply.aspx?ID=23623&Reply=23368><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor23623" onclick="return false;">80kv!  Give me a break!</a>&nbsp;-- <font color=#0000ff>spinnerbait42, <i>12/30/2004</i></font><script type="text/javascript">
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 80kv! Give me a break! -- spinnerbait42, 12/30/2004
 RE: 80kv! Give me a break! -- mikee likee, 12/30/2004
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