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how much hp w/30 lb injectors???
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<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>91 5.0</b> <br /><small>Member # 1527</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(2003,0,17,10,48,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> How much hp are 30lb injectors good for on a supercharged motor? <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>st5150</b> <br /><small>Member # 51</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(2003,0,17,10,51,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> Is an FMU used? If so, how much fuel pressure will be pumped through the 30 lbs injectors under full boost? <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>91 5.0</b> <br /><small>Member # 1527</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(2003,0,17,11,2,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> I dont know. The FMU im using right now is for 24lb injectors. Ive got a 255lph intank pump, ill probably also be using a T-rex inline pump. I heard that my FMU raises the pressure to 80psi under boost. I want to run about 10lbs of boost with my A-trim. Ill also have minor bolt ons-headers, intake, throttle body, etc. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>st5150</b> <br /><small>Member # 51</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(2003,0,17,11,12,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> You really have to know how much fuel pressure you're pumping through the injectors to calculate how much horsepower they'll support.<br /><br />If you haven't bought the T-rex yet.... get the WALBRO inline fuel pump instead. It flows more than the T-rex and you can never have too big of a fuel pump or fuel system. <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>91 5.0</b> <br /><small>Member # 1527</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(2003,0,17,11,21,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> ok, so with the walbro inline, a 255 intank, what should I set my pressure at, and at that pressure, how much hp can I safely push? <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>Yung Than</b> <br /><small>Member # 728</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(2003,0,17,12,19,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> How much boost psi are you planning to run at full boost? What ratio is your FMU? <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>91 5.0</b> <br /><small>Member # 1527</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(2003,0,17,13,25,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> about 10lbs. I think that is all I should run with an A-Trim. Im not sure what the FMU ratio is. It came with the supercharger. I was told its for 24lb injectors though. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>TM88GT</b> <br /><small>Member # 105</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(2003,0,17,13,52,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> If you have stock heads, cam, intake....you can run the 30lb injectors without the FMU, but you'll need a chip. They'll support about 350rwhp. <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>st5150</b> <br /><small>Member # 51</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(2003,0,17,14,9,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> Terrance, its actually 350 flywheel HP for a boosted application and 30 lbs injectors at 40 psi.<br /><br />Figure a stock 5.O motor with 10 lbs of boost will make anywhere from 290-330 rwhp... more likely somewhere right in the middle (310rwhp), so yeah, 30 lbs injectors will get him by with a custom chip.<br /><br />On a boosted car, 30 lbs injectors with a small FMU that will spike fuel pressure to 60 psi will be safe at 375 rwhp.<br /> <br /> <small>[ January 17, 2003, 02:10 PM: Message edited by: st5150 ]</small> <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>91 5.0</b> <br /><small>Member # 1527</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(2003,0,17,16,30,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> So I should probably just go with 36's? I want to have around 380-400hp eventually. <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>st5150</b> <br /><small>Member # 51</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(2003,0,17,16,34,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> 36's will take you to 380ish rwhp just fine with out an FMU and 450-475 rwhp with an FMU, provided you're using a Walbro 255 lph intank and 225lph inline pump. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>street_illegal_stang</b> <br /><small>Member # 1554</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(2003,0,17,21,36,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> using this table here---16x19lbs=304hp<br /> ---16x24lbs=384hp<br /> ---16x30lbs=480hp<br /> ---16x36lbs=576hp<br />this is how much the injectors can take or pistons rather. <img border="0" title="" alt="[Roll Eyes]" src="rolleyes.gif" /> <br />-Street- <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>st5150</b> <br /><small>Member # 51</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(2003,0,18,0,20,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> With all due respect, that 16X "rule" is complete BS. I bet the guy who came up with that joke 16X injector rule is rebuilding his short block right now after a lean condition burnt a hole in his piston. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>street_illegal_stang</b> <br /><small>Member # 1554</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(2003,0,18,23,6,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> yeah, its hersay buddy i just didn't pull it outta my ass <img border="0" title="" alt="[Roll Eyes]" src="rolleyes.gif" /> <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>TM88GT</b> <br /><small>Member # 105</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(2003,0,20,11,37,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> </font><blockquote><font size="1" face="Verdana, Arial">quote:</font><hr /><font size="2" face="Verdana, Arial">Originally posted by st5150:<br /><strong>Terrance, its actually 350 flywheel HP for a boosted application and 30 lbs injectors at 40 psi.<br /><br />Figure a stock 5.O motor with 10 lbs of boost will make anywhere from 290-330 rwhp... more likely somewhere right in the middle (310rwhp), so yeah, 30 lbs injectors will get him by with a custom chip.<br /><br />On a boosted car, 30 lbs injectors with a small FMU that will spike fuel pressure to 60 psi will be safe at 375 rwhp.</strong></font><hr /></blockquote><font size="2" face="Verdana, Arial">I've seen several boosted 5.0 with 30's and no FMU (chip tuned by Byron) making in the 350-360rwhp range and doing fine. Duty cycle was in the 90% range. Keep in mind - you wont be at WOT all the time so a duty cycle this high is not really a problem. <br /><br />With his combination of parts, 30's will be fine. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>st5150</b> <br /><small>Member # 51</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(2003,0,23,13,42,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> True, you can get it done with duty cycle in the 90%+ range... but I don't like that and would never recomend it to anyone. I'd rather build it right the first time than barely skim by. This is especially try for a power-adder car where there is little to no room for error when it comes to fuel delivery. <br /> </font> </td></tr> </table></td></tr></table> <br /> <br />
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