GPM flow for 3/8 pipe...

[Big White Beast]

I got way too much time on my hands.......

Rainy days = days off. No fun playing with electricity in the rain.



Anyway. I just got off the phone with Napa. The filter set up I have for the pre-filter Part# 4006 (#4309 housing with 1/2" ports) is rated at 10 microns also. I did see something on Fleetgaurds site about absolute ratings etc. I'll have to go back and read that.



It's also rated at 15 GPM max. That would be 900 GPH. I suppose one could use that as a replacement for the stock filter if you really wanted to gain flow. Again I don't think flow is a problem as it's been stated that any positive pressure is enough to sustain the VP. The problem is LP longevity and that seems to be something were just not going to overcome. Consider it an expensive maintenance item.



It was also interesting on the Fleetgaurd site in the FAQ's about when to change the fuel filters. They said to buy their flow meter. Seems they have one that goes in line for monitoring flow. I'll go back and read up on that also.



Garrett

 

[Big White Beast]

Not a very friendly site.........

User friendly that is. The fuel restriction gauge they talk about works on a vaccuum. No applicable to our trucks. Thought maybe there was something else available to monitor our pumps.



Garrett

 

[Oil Burner]

I think talking about a 3/8" line being able to flow over 270 GPM or the filter housing and filter only allowing a certain flow is only part of the game. You can take a pump with a nice curve and capable of pushing some serious head pressures and it will flow a gazillion gpm with no head pressure and the same pump will flow a heck of a lot less when pushing against a high head pressure. I would think that the engineers would size the pump to do a job against a certain head pressure. The only problem is that when you change that pressure, the pump moves from its most efficient point on its performance curve and like illflem said, it will not perform as well and maybe have a shorter life. That may be the real issue: longevity, not whether or not it will work (for some amount of time)

sorry so long.

-Jason

 

[illflem]

Originally posted by Big White Beast





On another note, I was looking at the service manual for the fuel system and noted that the gassers have the FP in the tank. Seems they could do something to that effect if they put their minds to it for the Diesels.

For what it's worth-

When my '95 was under warranty I took it in for a fuel delivery problem. While I was waiting the "tech" came back and said the fuel pump in my tank was missing. I told I didn't think there was supposed to be one, he got in a huff about it and went to the book to find out I was right. Of course he already had dropped the tank. Anyway he said it was a good thing there wasn't a pump in the tank because they go out all the time.



He also performed a trans line upgrade recall that was for gassers only. Don't know if I'd want to believe much that he said. I've always thought the tank pump would be a good thing for the 24 valve guys. When fuel injection first came to gassers they had lots of problems with electric LPs burning out till they figured out that putting them in the tank keeps them cooler. Now they rarely go out.

 

[Ncostello]

Well... the Carter motor has diesel going through it anyway! Just extend the wires on the connector a little and throw it in there. I intended to write this with a little humor... but I could be on to something. If you mounted the thing inside the "cage" that the pickup rides in and put a short bent tube on the intake it might suprise us. Now thats putting it back by the tank! Hmmmm... I wish I had plenty-o-cash to play around with this on a test truck.



Of course this could start a nice fuel fire back there too!!!!