Im currently in the process of getting my in-tank fuel pump refunded because i spent money, waited a week and a half past its scheduled delivery date of 2 months to show up.
I've changed my mind on going from in-tank to in-line and ive decided on getting a walbro GSL 392, the 255 LPH version (possibly 394?), because it is a well spoken of brand and the models are known to be quiet if mounted low on the car w/ the mounting equip provided.
Ive decided on AN-6 lines going to and from the engine, my only question is what size to use from the tank to the pump (it will be gravity fed). will i be ok using AN-6 stuff or should i spring for some AN-8?
Thanks in advance!
If it is AN6 the rest of the way, just plumb it all in AN6. Unless the tank already has AN8 fittings or something and it's easier that way.
Are you lifting the fuel out of the top of the tank, or feeding out a bung on the bottom? Bottom, you might be ok with the small line, but pulling out the top I would want at least 8, or a feeder pump.
Back in the olden days, Volvo used a 1/2 inch feed line when they came out the lower side of the tank, and they were feeding 125 horsepower...
Careful with the walbro. They don't have a good rep for the last couple of years.
A Bosch 044 would be perfect for this.
In reply to Dr. Hess :
no, nothing prefabbed; gonna use AN fittings and JB weld to seal it up
In reply to Streetwiseguy :
bottom lol no need for extra fab for this project.
i think things have advanced a bit since those old volvo days, just wondering if i need to do the same for my project with an old tank and new pump.
In reply to wvumtnbkr :
whats been going on with walbro? i havent seen this on the forums ive been lurking on
TurboFocus said:
In reply to Streetwiseguy :
bottom lol no need for extra fab for this project.
i think things have advanced a bit since those old volvo days, just wondering if i need to do the same for my project with an old tank and new pump.
Physics hasn't changed. Its still harder to suck than it is to blow...
In reply to Streetwiseguy :
I get that, but does a modern pump mitigate those issues?
Walbro are very loud and have a higher failure rate in the last couple of years than in the past. I'm not entirely sure why. I noticed this in endurance car racing.
I've been running that exact pump - the GSL-392 - on my Dodge Cummins for about 4 years now and it has been rock solid. I have read that there are a lot of counterfeit Walbro pumps out there, maybe that is the source of all the failures? It's also way quieter and cheaper than a Bosch 044 I also have (not on the truck), so I'm a fan.
In reply to NorseDave :
Awesome to hear, quick question if you don't mind. What size inlet hose do you use on your truck?
TurboFocus said:
In reply to NorseDave :
Awesome to hear, quick question if you don't mind. What size inlet hose do you use on your truck?
AN-6. Running it with a feed on the bottom of the tank now, but I ran it for 3+ years with a "draw straw" config going down through the top of the tank. I had some fuel system issues earlier this year (not pump related) and in trying to sort out what was going on, I ran that pump with about 10' of -6 line on the inlet side, and the pump about 24" above the level of the pickup, and it had zero issues pulling fuel. This was testing, so maybe if you ran it that way for years it would impact the longevity, but I think my test setup would be a rather extreme example.
In reply to NorseDave :
For some reason I love personal anecdotes
This puts me at peace for pulling the trigger on my fuel set up
