Post A Reply
read DMs/my profile
login
|
join CAFords
|
search
|
faq
|
»
Northern California Ford Owners
»
Automotive
»
Tech Talk
»
low or not ? 410w stroker oil pressure hot idle and revved up
» Post A Reply
Post A Reply
Login Name:
Password:
Message Icon:
Message:
HTML is not enabled.
UBB Code is enabled.
(
how?
)
Instant Emojis
Instant UBB Code
What is UBB Code?
Options
Disable smilies in this post.
<table border="0" cellpadding="1" cellspacing="1" width="99%" align="center"> <tr bgcolor="#000000"><td> <table border="0" width="100%" cellpadding="3" cellspacing="0"> <tr bgcolor="#000099"> <td colspan="2" align="left"> <font size="2" color="#ffffff" face="Verdana, Arial"> <b>T O P I C R E V I E W</b> </font></td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>1965FALCOON</b> <br /><small>Member # 8773</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,23,19,3,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> ok pretty simple run down on parts <br />stock block with 1/2 inch steel girdle<br />eagle 4340 crank and rods<br />je pistons<br />total seal rings <br />melling high volume high pressure pump<br />solid roller cam <br />brodix heads<br />jessle rocker set up<br />victor intake <br />breathers no pcv at this time(will add pcv when closer to racing and tunning time<br />clevite h bearings<br />machine work by metcalfs<br />assembled by radical rods<br />THE PROBLEM IS COLD IDLE 60PSI HOT IDLE 30PSI<br />REV UP TO 3000 RPM ONLY 50 PSI AND NO HIGHER WITH MORE RPM<br />MOTOR SHOULD GO TO 7500 RPM EASY<br />IS THE OIL PRESSURE TO LOW OR NOT SOMETHING TO WORRY ABOUT I HAVE HAD THIS COMBO REBUILT 4 TIMES AND ALWAYS THE SAME PROBLEM I HAVE REPLACED EVERY PART EXCEPT THE BLOCK AT ONE TIME OR ANOTHER ALL THATS LEFT IN MY OPINION IS THE BLOCK BUT SOMETIMES OUTSIDE EYES CAN HELP <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>Greasy</b> <br /><small>Member # 5258</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,23,20,5,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> I have seen cars with strokers making 10psi at a warm idle and they don't have any problems. It sounds like you have perfectly fine pressure to me. My stang gets 22psi at a warm idle and even lower when I race it..... <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>93PONY</b> <br /><small>Member # 60</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,23,20,23,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> We normally see 60psi peak with a STD oil pump & standard clearances.<br /><br />HV oil pump may be draining the oil pan is it's not got more volume. Typically HV oil pump = loser bearing clearances, which would mean less oil pressure.<br /><br />It's probably the oil pump bypass not letting it go over 50psi. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>turbo50</b> <br /><small>Member # 6700</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,24,5,36,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> I believe the formula is 10PSI for every 1K rpm....but that is so very debatable.<br /><br />Have you tried a titan pump or playing with the bypass? <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>JohnB</b> <br /><small>Member # 969</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,24,9,58,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> What cam bearings are you using and have they been replaced with each rebuild? Solid rollers are very hard on cam bearings...<br /><br />Overall, sounds like the rotating assembly has excessive clearances. Crank was probably cut on the low side, rod radiuses are at the max, and the tolerances are at max. <br /><br />If you're pulling a solid 30 psi/hot at idle, it's got plenty. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>1965FALCOON</b> <br /><small>Member # 8773</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,24,10,51,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> BRAND NEW CLEVITE BEARINGS FOR THE CAM <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>F.or O.nly R.eal D.rivers</b> <br /><small>Member # 8971</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2009,5,24,13,22,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> Im running that same oil pump and I get about the same reading as you,50-55psi 6000rpm,20-30psi in gear about 800rpm at operating temp(180-190 degrees).Havent had any problems.<br /> <br /> <small>[ June 24, 2009, 01:23 PM: Message edited by: F.or O.nly R.eal D.rivers ]</small> <br /> </font> </td></tr> </table></td></tr></table> <br /> <br />
Questions/Requests/Suggestions? email CAFords
Fueled by
Ford Mustang Owners
on CaliforniaFords.com
