Got Aeromotive FP Regulator

[EricBu12]

Got the Aeromotive FP Regulator since the reg. and pusher Pumps was making almost 20 PSI. I bought the adjustable FP Regulator. Adjusts from 3 to 20 PSI with the turn of a screw.



Ran the return line back to the Filter by the tank.

Got it set at a steady 15 idle. Haven't road tested it yet but the #'s should be all OK.....



<img src=https://www.turbodieselregister.com/user_gallery/sizeimage.php?&photoid=4897&width=2/src img>



Heres the filter I use, It is a Racor with a water sep. and WIF sensor and a ALT. heater element. There is also a sensor to tell me when the filter is clogged. The top hose you see is the return from the regulator, One of the ones on the right is from the tank (with the red Handled valve) and the other is the one-way bypass incase the pusher fails and the one on the left is the main feed to the pumps.



<img src=https://www.turbodieselregister.com/user_gallery/sizeimage.php?&photoid=4898&width=2/src img>

 

[EricBu12]

heres the part in Summits Site Part # AEI-13301

 

[EricBu12]

Have an update.



The PSI was about 15 and it was fluctuating between 14 and 15 on my setting. If you look at the pic, there is a vaccume port. I hooked this to the manifold up by the hood edge for the HVAC systems and put vaccume to the unit. had to readjust the spring setting but Now it is rock steady. Setting was at 15 and when I took off from a light, it would go down to 14 then at cruise, even freeway, it went back to 15. WOT was also at 14 to 14. 5. so this is working very well. Now even the pusher pump has a small head preassure so it dont have to draw hard the diesel... ...

 

[csutton7]

it's a very good unit--mine has been on for about 22 months--the mallory I had blew out in a couple months---chris

 

[EricBu12]

Thanks sutton, Thats good news on reliability.

I am getting a steady 14 at idle and cruise. If I accelerate, it goes down to 13 and then goes back up even if I am still floored. I am leaving it there.

With a pre-filter, Pre-Fuel Heater, a pusher pump, and the regulator, I Finally have a fuel system that is reliable and keeps all the parts from working too hard (Pumps).

 

[jjohn]

Have an update.

If you look at the pic, there is a vaccume port. I hooked this to the manifold up by the hood edge for the HVAC systems and put vaccume to the unit.

Eric,

Where is this vaccume source ?

 

[EricBu12]

I tapped into the vacuum for the HVAC system you will find a manifold up by the firewall just under the hood seal. there is a capped off leg...



BTW, this is still working great. I adjusted it up to almost 15 psi Idle. Whenever I go lower in altitude, the pressure drops a little like 2 psi.

 

[mhenon]

I'm not sure I understand the vacume/boost ports on a fuel regulator. Aeromotive has some nice looking stuff and I may go to their marine pump and regulator. Whats the purpose of the vaccume/boost lines in the regulator.

Mike

 

[EricBu12]

It smooths out the pressure readings. since there is a spring in there for manual adjustment, the PSI was fluctuating about 1 or 2 PSI up and down. When I put the vacuum to it, I had to readjust the screw, but now the reading is rock steady.

 

[rbattelle]

I was under the impression that you could run these pumps on our trucks without a regulator. I guess I'm mistaken? Is 20 psi too much pressure?



-Ryan

 

[rweis]

I've been running a Mallory 4307M for about 18 mos. I set mine at 12 (DTT has some info on their site that Bosch says 12 - 14 psi) and I did not hook up the vacuum. It does sometimes drop to 10 for a second or two, but comes right back up to 12. I may try the vacuum hookup.



I also set mine to 12 because I do NOT want the OEM lp bypass valve to open EVER (it opens at 14psi) ! The OEM lp bypass valve seems to be a major point of failure of the OEM lp.



I send the byass back to the tank filler burp line to filter it again as it re-enters the fuel system in its next trip. I think yours also constantly cleans the fuel stream like mine.



I also have the RACOR 690 (10 micron) pre lp. That sucker saved my butt when I got a load of fuel with water in it. Drove 20 miles, stopped, drained the water, drove 20 miles, stopped, drained the water, ...



I only have 43k on the truck, but I am totally convenced that the RACOR, OEM lp on the frame, bypass regulator, is the answer to clean up the fuel, keep the check valve closed, keep the load off the OEM lp so it runs at a lower torque and at a narrow rpm range since it only sees 12 psi head pressure, and the VP gets exactely what Bosch wants.



If my Mallory ever quits I may go to the Aeromotive bypass, it seems well made. So far so good, which means it probably will not start in the morning, lol!



Bob Weis

 

[Hohn]

The AM reg looks like a good unit. When/if I get one, I'll probably get the one matched to their big daddy USCG pump. Summit has it for $199.



Unforunately, the USCG pump is $419! Between it and the regulator, you could buy a FASS.



I'd think the AM pump is more reliable though, and it certainly flows more! Can you say 800 lb/hr? JMHO. .





jlh

 

[NWhitney]

Need Regulator?

Has anyone been able to find were the the VP does not like pressures over 14? I have read that some people have been running 22psi and have had no ill effects. Also were is the bypass in the stock LP? Or is it on the VP? Thank You for the answers!

 

[rweis]

I took my info about the 12 - 14 psi from the DTT web site about the RASP pump. BK states he had dialogue with Bosch about what the input pressures should be and that is why the RASP bypass is set to 12 - 14 psi.



As I recall in the DTT post DTT specifically asked Bosch what the psi should be and why.



I think it is www.dieseltransmissiontechnology.com then to the forums then to the RASP section.



The bypass on the OEM lp can be seen on the input side. You can not adjust it without destroying the pump. There is a thread years ago about some guys drilling and tapping the OEM lp frame and puting a set screw in it to hold the check valve seated. However it is a very hit and miss procedure to hit the check valve exactelly dead on. That is why I used a bypass regulator.



I think there is also a bypass valve in the input or low pressure section of the VP set to 14 psi. You could do a search on it.



Bob Weis

 

[Tcolesanti]

Vaccum port?????

That is a boost refernce port. Aeromotuve puts these ports on most if not all of there adjustable bypass's and regulater's. What boost refernce does is it raises fuel pressure usually on a 1:1 scale. Meaning for every one pound of boost added to the boost reference port the regulater/adjustable bypass raises the fuel pressure 1lb.



Check it out.

http://216.242.145.16/products/product.phtml?p=15

 

[Supermod56]

I'm not sure I understand the vacume/boost ports on a fuel regulator. Aeromotive has some nice looking stuff and I may go to their marine pump and regulator. Whats the purpose of the vaccume/boost lines in the regulator.

Mike

The Vacumm port is for gas motors, it raises the pressure when the vacumm drops, i. e. full bore on a gas motor, same as a stock regulator on any EFI motor, they have manifold vacumm hooked to it all the time. If it steady's the pressure on the Cummins, Great!!! Being we have a vacumm pump, it stays steady all the time.



Tom

 

[Tcolesanti]

Did you guys read the link I posted??? That Aeromotive adjustable bypass has NO vaccum port, as almost all Aeromotive bypass's and regulator's. It is a Boost reference port for blown/turbocharged gas applications. It works very simply: When boost rises, so does fuel pressure. Like most companies that build these products, it rises on a ratio of 1 to 1.

Since when does a 6BT have vaccum in the intake manifold????

 

[rweis]

That is all well and good, but... ...



1. What I use a bypass regulator for is to keep the lp check valve closed which opens at 14 psi, so going over 12 psi will not keep the check valve closed... ... ... . check valve failure reasons... ... ... ... .



2. The VP44 wants to see 12 - 14 psi, so going over that is less than optimum for the VP44.



Not everyone uses the bypass regulator for the same purpose, but for me I will sit tight with what I have. Thanks for the information anyway.



Bob Weis