return line direct to tank, or to accumulator

[Gunnibronco]

Since I'm not putting my aux tank back into my truck, I have an extra return line available. I've read some people don't like running the EFI return line into the accumulator, because it puts hot gas back into your feed. I thought I could run my return line directly to the tank, and also the line out of the accumulator to the tank.

But I was wondering if the HP pump could pull more than the LP pump could push. Therefore needing some of the returned fuel to make up the difference.

Thoughts? Does anyone know if anyone has done this set up with success? I don't want to cause a problem with a system that already seems to work well.

[Viperwolf1]

The HP pump can flow more than a LP pump.

[Gunnibronco]

Well, in that case I'll just leave it installed with the return line through the accumulator.

Thanks

[RJLougee]

The HP pump can flow more than a LP pump.

Yes, but that is not the same statement as "depends on the LP pump",which is what I would say.

I never run an accumulator, it's a band-aid, like a steering damper.

First choice is to run an in-tank pump, with an in-tank return line.

2nd choice is to run the stock tank, with a Holley Red LP pump, to the Bosch 2000 HP pump, and the return goes straight back to the tank.

It's also important to remember filters between the tank and LP pump, and another one between the HP and rails. If you're running AN lines, there are some interesting/inexpensive options I've been exploring lately.

AND>>>>> it depends on where you drive, how, when, etc... As well as 5.0 vs. 5.8. roller vs. not, etc...
HTH, Joe

[Gunnibronco]

Thanks,

I've been running a LP pump (1st no name BCB pump, now Carter), accumulator, and E2000 HP pump, since I installed my EFI.

I know an accumulator is not necessary, but since its already installed, I figure it doesn't hurt. I've never had any fuel related issues, except all the junk from a new tank clogging up the preLP filter. I also like that the accumulator acts as a second fuel filter.

I'm interested in fuel line options, but for another upcoming build. I'm running mostly steel lines on this truck, with rubber fuel lines (EFI rated where necessary) & hose clamps. It works, but isn't super attractive.

[Gunnibronco]

I've been living on the edge, without a filter post HP pump.

What kind of micron filter should I look for post HP pump. I'd like to buy a universal filter so I can use it as an adapter between my 3/8" hard line & 5/16" factory stuff.

[sykanr0ng]

From what I've seen 4 micron max.

[Gunnibronco]

4? or 40?

I went with this, since I was ordering AN stuff for my PS/Hydroboost.

http://www.anfittingsdirect.com/an-fitt ... p-269.html

Seems like 10 is the smallest I could find scanning Summit for options. Most were 40, some were 100. I figure anything is better than running nothing.

[sykanr0ng]

Thread on CB

They said 4, said 10 was still going to let damage causing trash through.

[RJLougee]

This is what I'm using on a couple rigs, easy to find the filter almost anywhere and fairly inexpensive:

http://paceperformance.com/i-6679807-pa ... tings.html

This is the part# for the AN6 x 16mm fittings: RUS648060

If you need a different fitting, just make sure the end going into the filter is a ?? to 16mm x 1.5 Male.

Or if adapting the AN6 to rubber hose: SUM-220769B and SUM-220765B
HTH, Joe

[Gunnibronco]

Thanks, I like the OEM availability. Might pick one up.

[landshark]

running that same filter on the 76 and 69... cheap and easy to find.

[sykanr0ng]

This is where I remember seeing 4 micron:

http://classicbroncos.com/forums/showth ... uel+filter

And these are the 4 micron filters mentioned:

https://www.summitracing.com/parts/wix-33481

[Eck]

I am running this after my accumulator and it fits directly to the rubber fuel hose.

http://www.oreillyauto.com/site/c/detai ... &ppt=C0025


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[Gunnibronco]

I did some reading after looking at all the info in this thread. It looks like Wix filters are rated to 4 microns, but most other brands don't list a micron rating. Wix 33481 is the equivalent filter to the one RJ Lougee & Landshark are running. So I went ahead and ordered one. I'll put it up in the engine compartment, just before the fuel rails.

Thanks for all the info.