<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><div></div><div>Thanks Russ for your input to the TPR site....its not often you share so just wanted to let you know its appreciated.</div><div><br></div><div>Dennis<br> </div><div><strong><font color="#0000ff"><em>Mad Dawg Antenucci <br></em></font><font color="#ff0000">Team Pantera Racing</font></strong> </div> <div><em><strong>The 1st & still the only vintage race team in open road racing <br></strong></em><font color="#0000ff"><a rel="nofollow" target="_blank" href="http://www.teampanteraracing.com">www.teampanteraracing.com</a></font></div><div><br></div><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><br><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight:
bold;">From:</span></b> russell fulp <musclebyrussell@hotmail.com><br><b><span style="font-weight: bold;">To:</span></b> tpr@teampanteraracing.com<br><b><span style="font-weight: bold;">Sent:</span></b> Mon, January 31, 2011 10:03:04 AM<br><b><span style="font-weight: bold;">Subject:</span></b> [TPR] Grooved Main Bearings<br></font><br>
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O.K. guys there is a reason why nobody makes a fully grooved bearing but that takes in to play,bearing speed,surface diameter,surface width,R.P.M. as well as centrifical forces . Federal Mogul makes a 3/4 groove main for performance applications . You see every time an internal combustion engine fires it actually bends the crank,not much have you but it does happen ! The downward force that is applied as the spark plug fires is how a engine is rated as far as Horsepower & Torque (so to speek) That is also the reason why the rod bearing as well as the main bearing is not grooved fully ! It requires that added bearing surface to put up with the load .It actually has very little to do with lubrication .There are a ton of other factors that come into play here but that is the general idea .<br><br> <br><font size="5" face="Lucida Handwriting, Cursive"><em>Russ</em></font> <br><em><font face="Verdana, Geneva, Arial,
Sans-serif"><font size="3"><strong>B.L. Machine & </strong><strong>Russ Fulp Racing Engines</strong></font></font></em><br><font size="1">1100 E. Orangefair Lane</font><br><font size="1">Unit E</font><br><font size="1">Anaheim, CA 92801</font><br>714-870-8570<br> <br><strong></strong> <br><br><br>
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