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SN95 Cobras
Heat issues (again)
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<blockquote data-quote="Serfma" data-source="post: 16687464" data-attributes="member: 196123"><p><strong>You guys aren't going to believe this.</strong></p><p></p><p>I am quite confident I found my heating issue. Yesterday I found out I have underdrive pullies. I would have never guessed because I didn't know what OEM Cobra crank + water pump pulleys looked like until I seen my brother in law's lincoln mark 8 and thought "what the hell they're different?". It requires a crows foot to remove my alt which I always found odd but nothing else besides "thanks engineers".</p><p></p><p>Doing the math if I replace my crank + water pulley I will see a 47% increase in RPMs. </p><table style='width: 100%'><tr><td>Current pulleys</td><td></td><td>Target pulleys</td><td></td><td></td></tr><tr><td>Crank pulley size</td><td><p style="text-align: right">6</p> </td><td></td><td>Crank pulley size</td><td><p style="text-align: right">6.7</p> </td></tr><tr><td>Water pulley size</td><td><p style="text-align: right">6.75</p> </td><td></td><td>Water pulley size</td><td><p style="text-align: right">5.125</p> </td></tr><tr><td>RPM</td><td><p style="text-align: right">1000</p> </td><td></td><td>RPM</td><td><p style="text-align: right">1000</p> </td></tr><tr><td>B calc RPM</td><td><p style="text-align: right">888.8888889</p> </td><td></td><td>B calc RPM</td><td><p style="text-align: right">1307.31707</p> </td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Increase from current to target</td><td><p style="text-align: right">47%</p> </td><td></td><td></td><td></td></tr></table><p></p><p>Will be slightly off as my current crank pulley size may be off a little bit. Just changing the water pump pulley will net me a 32% increase which I have today, crank pulley will be ordered.</p></blockquote><p></p>
[QUOTE="Serfma, post: 16687464, member: 196123"] [B]You guys aren't going to believe this.[/B] I am quite confident I found my heating issue. Yesterday I found out I have underdrive pullies. I would have never guessed because I didn't know what OEM Cobra crank + water pump pulleys looked like until I seen my brother in law's lincoln mark 8 and thought "what the hell they're different?". It requires a crows foot to remove my alt which I always found odd but nothing else besides "thanks engineers". Doing the math if I replace my crank + water pulley I will see a 47% increase in RPMs. [TABLE] [TR] [TD]Current pulleys[/TD] [TD][/TD] [TD]Target pulleys[/TD] [TD][/TD] [TD][/TD] [/TR] [TR] [TD]Crank pulley size[/TD] [TD][RIGHT]6[/RIGHT][/TD] [TD][/TD] [TD]Crank pulley size[/TD] [TD][RIGHT]6.7[/RIGHT][/TD] [/TR] [TR] [TD]Water pulley size[/TD] [TD][RIGHT]6.75[/RIGHT][/TD] [TD][/TD] [TD]Water pulley size[/TD] [TD][RIGHT]5.125[/RIGHT][/TD] [/TR] [TR] [TD]RPM[/TD] [TD][RIGHT]1000[/RIGHT][/TD] [TD][/TD] [TD]RPM[/TD] [TD][RIGHT]1000[/RIGHT][/TD] [/TR] [TR] [TD]B calc RPM[/TD] [TD][RIGHT]888.8888889[/RIGHT][/TD] [TD][/TD] [TD]B calc RPM[/TD] [TD][RIGHT]1307.31707[/RIGHT][/TD] [/TR] [TR] [TD][/TD] [TD][/TD] [TD][/TD] [TD][/TD] [TD][/TD] [/TR] [TR] [TD]Increase from current to target[/TD] [TD][RIGHT]47%[/RIGHT][/TD] [TD][/TD] [TD][/TD] [TD][/TD] [/TR] [/TABLE] Will be slightly off as my current crank pulley size may be off a little bit. Just changing the water pump pulley will net me a 32% increase which I have today, crank pulley will be ordered. [/QUOTE]
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