Procharger experts needed
06-17-2005, 09:42 PM
#11
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Re: Procharger experts needed
Originally Posted by baronbob
Thanks for all the response to everyone. The back ground someone asked for is as follows: The engine is a Merc 7.4 MPI the system is a used M-1 with the red regulator (I think made by ATI). Ati can not come up with a part # for the regulator. They did sell me the correct re-build kit (diaphragm, 3 O rings and a spring). The problem did exist before the re-build. I put the regulator back together the same way with the large round plate on the top of the diaphragm and found that I did not have enough travel in the adjustment and then re-located the round plate to the bottom of the diaphragm resulting in pushing the needle further down with a given spring pressure. the needle does have a wear mark and I have asked ATI if I can purchase a new needle and seat. They do not know if they are sold separately, they don,t know the part # of the regulator or the needle/seat. They will not let me talk to the tech on the flow bench to see where the round plate goes. Anybody know?? Can or should I lap in the needle/seat with valve lapping compound? Or should I just Polish it on my lathe? How do you set the idle voltage referenced in one of these responses?
06-18-2005, 10:16 AM
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Re: Procharger experts needed
Originally Posted by Pantera28-650HP
Smitty -
What are the part numbers and approximate $$$ ?
Can you post a picture of the actual set up on the engine?
Thank you
What are the part numbers and approximate $$$ ?
Can you post a picture of the actual set up on the engine?
Thank you
Anyone trying to solve same problem pm me with a phone number and I'll call you and explain it if you still don'yt understand.
06-18-2005, 01:42 PM
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Re: Procharger experts needed
Orginal prorcharger regulator I had was for carbs, it worked perfect. Problem must be with the procharger efi regulator. When I went EFI I bought a aeromotive regulator & have had no problems with fuel pressure.
06-18-2005, 03:26 PM
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Re: Procharger experts needed
Originally Posted by Turbojack
Orginal prorcharger regulator I had was for carbs, it worked perfect. Problem must be with the procharger efi regulator. When I went EFI I bought a aeromotive regulator & have had no problems with fuel pressure.
06-19-2005, 10:03 PM
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Re: Procharger experts needed
Originally Posted by Pantera28-650HP
Smitty -
Who makes the other regulator? Hope you get a chance to post pictures. I think this is part of my problem!!!
Thanks
Who makes the other regulator? Hope you get a chance to post pictures. I think this is part of my problem!!!
Thanks
)SmittyIf you have any other questions about it pm me with a phone# and I'll call you one wk night after 9pm.I'll post a pic of it on boat this week,I just came in from putting motor in today.
06-19-2005, 10:08 PM
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Re: Procharger experts needed
Originally Posted by GPM
You might want to look at the Weldon, pumps, and regulators, you would only need one of each.
Last edited by articfriends; 06-19-2005 at 10:12 PM.
06-19-2005, 11:11 PM
#18
Re: Procharger experts needed
Smitty, they have several pumps available, I think you would want the 2025 it puts out about 950lbs per hour. You're only seeing 950hp but the blower is probably eating another 250. MuscleMotors.com had the best prices a while ago. Use the Weldon regulator, it's about $125 and it's all you will need. The smaller regulators can't bypass the fuel and the pressure jumps around. You can check out the flow charts at weldonracing.com.
Last edited by GPM; 06-19-2005 at 11:34 PM.
06-20-2005, 10:29 AM
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Re: Procharger experts needed
I got an aremotive eliminator fuel pump. Still red in color, same size just more volume than the AE1000. In second year with this & no problems yet.
06-20-2005, 12:30 PM
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Re: Procharger experts needed
Ok, I have been working with procharger on my problem also. Same red regulator as shown above. I have twins, one motor works great, 30 lbs idle 55 wot, the other motor is 30 lbs idle and 50 lbs wot, even if I set it at 40 lbs idle it is still 50 lbs wot. I agree they are not the same, sometimes they are 38 lbs at an idle other times 30, however in my case it is alway on the high side which is ok. I also see a fluctuation on my "bad" motor by 4-5 lbs about every 15 seconds when at an idle on a mechanicle gauge, it will bounce from 35 to 30 and right back to 35. I was starting to think I have a bad pump until reading this post. Now I wonder about the regulator. I may swap mine between motors and see what happens. Maybe I have a bad one also. I have had great help from PC so far, if it all who you talk to, I think there is only one support guy that is good on the marine side.
You may also have a stock regulator problem if you have the cool fuel system, PC has a kit to eliminate the stock regulator from the circuit.
Anyone know why the fuel pressure would bounce 4-5 lbs in a second at idle? Is this a fuel pump problem or a regulator issue?
You may also have a stock regulator problem if you have the cool fuel system, PC has a kit to eliminate the stock regulator from the circuit.
Anyone know why the fuel pressure would bounce 4-5 lbs in a second at idle? Is this a fuel pump problem or a regulator issue?
