Pistons and rings
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'''Example:''' 4" bore "Street Normally Aspirated" = 4" bore x 0.0065 = 0.026 top ring end gap. NOTE: Second ring end gaps do not need extra clearance. Dyno and track testing has shown that 34 degrees or less total ignition timing makes the best HP and time. Excessive spark advance, lean fuel mixture or too much compression for the fuel and cam used will make heat sufficient to butt piston rings with as much as 0.060" ring end gap. The entire top land can expand enough to contact the cylinder walls, when close to melt down temperatures are reached. | '''Example:''' 4" bore "Street Normally Aspirated" = 4" bore x 0.0065 = 0.026 top ring end gap. NOTE: Second ring end gaps do not need extra clearance. Dyno and track testing has shown that 34 degrees or less total ignition timing makes the best HP and time. Excessive spark advance, lean fuel mixture or too much compression for the fuel and cam used will make heat sufficient to butt piston rings with as much as 0.060" ring end gap. The entire top land can expand enough to contact the cylinder walls, when close to melt down temperatures are reached. | ||
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<br><table border="1" cellpadding="2" cellspacing="0"> | <br><table border="1" cellpadding="2" cellspacing="0"> | ||
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<td bgcolor="#FFF8DC" rowspan="3" class="table_label_two" align="center" valign="center" width="180">'''APPLICATION'''</td> | <td bgcolor="#FFF8DC" rowspan="3" class="table_label_two" align="center" valign="center" width="180">'''APPLICATION'''</td> | ||
<td colspan="3" class="table_label_two" align="center">'''HYPEREUTECTIC'''</td> | <td colspan="3" class="table_label_two" align="center">'''HYPEREUTECTIC'''</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" colspan="3" class="table_label_two" align="center">'''FORGED'''</td> |
</tr> | </tr> | ||
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0020"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0020"</td> | ||
<td class="row_b" align="center">0.0020" - 0.0025"</td> | <td class="row_b" align="center">0.0020" - 0.0025"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0040"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_b" align="center">0.0035" - 0.0045"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0045" - 0.0055"</td> |
</tr> | </tr> | ||
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0020"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0020"</td> | ||
<td class="row_b" align="center">0.0020" - 0.0025"</td> | <td class="row_b" align="center">0.0020" - 0.0025"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0045"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_b" align="center">0.0040" - 00.0050"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0050" - 0.0060"</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
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<td bgcolor= class="row_a" align="center">0.0020" - 0.0025"</td> | <td bgcolor= class="row_a" align="center">0.0020" - 0.0025"</td> | ||
<td class="row_b" align="center">0.0025" - 0.0035"</td> | <td class="row_b" align="center">0.0025" - 0.0035"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0050"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_b" align="center">0.0045" - 0.0055"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0055" - 0.0065"</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0020" - 0.0050"</td> | <td class="row_b" align="center">0.0020" - 0.0050"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0040"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_b" align="center">0.0040" - 0.0050"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0055" - 0.0065"</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
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<td bgcolor= class="row_a" align="center">0.0025" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0025" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0030" - 0.0045"</td> | <td class="row_b" align="center">0.0030" - 0.0045"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0040"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_b" align="center">0.0045" - 0.0065"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0055" - 0.0075"</td> |
</tr> | </tr> | ||
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<td bgcolor= class="row_a" align="center">0.0025" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0025" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0025" - 0.0050"</td> | <td class="row_b" align="center">0.0025" - 0.0050"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0040"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_b" align="center">0.0045" - 0.0065"</td> |
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0055" - 0.0075"</td> |
</tr> | </tr> | ||
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<td bgcolor=" class="row_a" align="center">0.0030" - 0.0045"</td> | <td bgcolor=" class="row_a" align="center">0.0030" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0030" - 0.0050"</td> | <td class="row_b" align="center">0.0030" - 0.0050"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0045"</td> |
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0020" - 0.0045"</td> | <td class="row_b" align="center">0.0020" - 0.0045"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0040"</td> |
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0020" - 0.0045"</td> | <td class="row_b" align="center">0.0020" - 0.0045"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0020" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0020" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0025" - 0.0050"</td> | <td class="row_b" align="center">0.0025" - 0.0050"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0025" - 0.0045"</td> | <td class="row_b" align="center">0.0025" - 0.0045"</td> | ||
− | <td bgcolor="# | + | <td bgcolor="#F1F1F1" class="row_a" align="center">0.0050"</td> |
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<td bgcolor= class="row_a" align="center">0.0030" - 0.0050"</td> | <td bgcolor= class="row_a" align="center">0.0030" - 0.0050"</td> | ||
<td class="row_b" align="center">0.0035" - 0.0055"</td> | <td class="row_b" align="center">0.0035" - 0.0055"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0030" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0030" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0035" - 0.0050"</td> | <td class="row_b" align="center">0.0035" - 0.0050"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0030" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0030" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0035" - 0.0050"</td> | <td class="row_b" align="center">0.0035" - 0.0050"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0030" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0030" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0035" - 0.0050"</td> | <td class="row_b" align="center">0.0035" - 0.0050"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0015" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0020" - 0.0045"</td> | <td class="row_b" align="center">0.0020" - 0.0045"</td> | ||
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<td bgcolor= class="row_a" align="center">0.0025" - 0.0045"</td> | <td bgcolor= class="row_a" align="center">0.0025" - 0.0045"</td> | ||
<td class="row_b" align="center">0.0030" - 0.0050"</td> | <td class="row_b" align="center">0.0030" - 0.0050"</td> | ||
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</tr> | </tr> | ||
</table><br> | </table><br> |