16 pounds on stock twins
Senior Member
Joined: Oct 2004
Posts: 233
From: Oklahoma City
Nope. I have seen motors break at 13psi on the stock fuel system. If you are going to replace the fuel pump do the rest of the fuel system.
Half way doing things on this car will cost you far more in the long run.
Do it right the first time even if it takes a little longer and you will enjoy your car more.
Half way doing things on this car will cost you far more in the long run.
Do it right the first time even if it takes a little longer and you will enjoy your car more.
Thread Starter
Senior Member
Joined: Mar 2005
Posts: 168
From: Reno , NV
Originally Posted by rotaryinspired' post='812964' date='Apr 9 2006, 07:41 PM
Nope. I have seen motors break at 13psi on the stock fuel system. If you are going to replace the fuel pump do the rest of the fuel system.
Half way doing things on this car will cost you far more in the long run.
Do it right the first time even if it takes a little longer and you will enjoy your car more.
So how many pounds can be ran on the stock injectors. If im running 12 on my stock fuel system and am installing a 255, how many pounds can i run safetly. Im running an aem and the injector duty % is way off, it shows them at like 140 % this cant be right.
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by JBs93FD' post='813084' date='Apr 10 2006, 01:17 PM
So how many pounds can be ran on the stock injectors. If im running 12 on my stock fuel system and am installing a 255, how many pounds can i run safetly. Im running an aem and the injector duty % is way off, it shows them at like 140 % this cant be right.
140% can be right.....
Thread Starter
Senior Member
Joined: Mar 2005
Posts: 168
From: Reno , NV
Originally Posted by j9fd3s' post='813109' date='Apr 10 2006, 03:37 PM
140% can be right.....
that was at 10 pounds, so how much can the stock injectors hold , and what kind of #s should be seen as you duty%
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by JBs93FD' post='813182' date='Apr 10 2006, 11:40 PM
that was at 10 pounds, so how much can the stock injectors hold , and what kind of #s should be seen as you duty%
that depends on the air fuel mixture, and how much air is going thru the motor (porting, exhaust etc etc)
if you slap a power fc on a stock fd @10psi its running 90somthing% duty
Thread Starter
Senior Member
Joined: Mar 2005
Posts: 168
From: Reno , NV
Originally Posted by j9fd3s' post='813209' date='Apr 11 2006, 07:34 AM
that depends on the air fuel mixture, and how much air is going thru the motor (porting, exhaust etc etc)
if you slap a power fc on a stock fd @10psi its running 90somthing% duty
Thread Starter
Senior Member
Joined: Mar 2005
Posts: 168
From: Reno , NV
Originally Posted by JBs93FD' post='813217' date='Apr 11 2006, 08:06 AM
thats what im sayin, my aem says 140 at 10 pounds
Member
Joined: Oct 2004
Posts: 65
From: Washington
Originally Posted by j9fd3s' post='813209' date='Apr 11 2006, 07:34 AM
if you slap a power fc on a stock fd @10psi its running 90somthing% duty
Really? Wow. I had no idea they ran such a high duty cycle in stock form.