blk99camaro

iTrader: (9)

Re-doing my fuel system after I noticed a leak from an aluminum line that was initially used when I got my fuel system(it was free). Running 1 of the 2 340lph pumps that are in the tank now and 1/2in alum hardline feed(to the y-block) and 3/8 hardline return. Down the road plan is to go turbo, I know this is overkill for my current setup. Is there any issue with -8an feed AND return?

My current plan/idea is to run Earls SS hardlines (1/2in) utilizing 37* single flares and tube nuts from the fuel filter to the y-block at the rails and from the regulator to the tank. I have a 1/2in rigid bender and really don't want to have to purchase a separate 3/8 bender to do the job unless necessary. I have a mastercool hydro flare kit to take care of the 37* flares on the stainless tube.

Id like to stick with the hardline, so really not considering AN hose for the main chassis lines at this time.

Thoughts/advice would be appreciated before I pull the trigger on the lines and fittings I will need.

Jon

01ssreda4

iTrader: (96)

I have 8 to and from. Why would you think there would be an issue? Just allows quicker return of unused fuel.

Modchevelle

iTrader: (9)

I used #6 Nitrous line for a return with a -8 feed

L92 OLDS

Yes, issue is cost and weight of all those high priced fittings and braided line. Why not use the factory nylon tubing and fittings? Much better solution in my opinion. Do a search

blk99camaro

iTrader: (9)

I have no stock lines in the car, as I stated the car has a full fuel system but the lines I got are aluminum but the aluminum fuel line started to leak at the y-block fitting where it transitions from the hardline to AN. I would only be out the cost of the hardline, tube nuts, and a few misc fittings. I got the entire fuel system for free (twin pumps, 99+ tank, rails, lines, fuel filter, all associated fittings).

blk99camaro

iTrader: (9)

I didn't think there would be an issue, but it definitely isn't "common" around here so I figured I would ask to see if there was something I am missing.

Jon

JoeNova

I don't know why you say it isn't common. An 8/8 setup is probably the most commonly used on this forum for boost.

blk99camaro

iTrader: (9)

Well my search didn't come up with much other than a lot of -8/-6 and -10/-8 setups, which do seem common. Maybe it was a "keyword" I wasn't using right in the search. Either way, I was asking the question for a warm and fuzzy and for me it will save me the cost of an additional $200 bender to stick with a -8/-8 setup.

Thanks

Jon

01ssreda4

iTrader: (96)

I went 8/8 so i could buy one roll of line and one size of fittings. Since it was my first one i wasnt sure how much of all of it i needed so this kept me from being over on one size and not enough on another. Also if anything ever needs to be replaced, no question about which one I would need to buy or keep in stock. Made sense to me.

G Atsma

I agree with this. You might have spent more total than if you used two sizes, but the security of knowing you are covered in case of a bad line more than makes up for it in my eyes.

Modchevelle

iTrader: (9)

Use the original feed line as a return? Just a idea to save money.

pdxmotorhead

Simple is good, I'd have done the same thing.. just use -8 and Goodrich fittings, its not like they are not re-usable and 1 size is my pref.. keeps the list of spares I might need smaller..

G Atsma

When you are using -8(1/2") as a feed line, the OEM line might not be big enough for a return. and you do not want the return causing backpressure in your fuel system.

pdxmotorhead

+1,, any pressure on the relief of a regulator can lead to intermittent fueling problems that will put you in a padded cell trying to tune them out.. Burnt out two really expensive pumps a few years back that way..

01ssreda4

iTrader: (96)

Just did a 8/6 setup with dual 450s, I could get pressure down to about 35 before the return could not flow anymore back to the tank. Just a tidbit of info.

Modchevelle

iTrader: (9)

What size is the OEM line? I was just guessing its enough to feed a motor its big enough to spit it back?

blk99camaro

iTrader: (9)

I'm assuming you used Aluminum? This setup has only a few thousand miles on it and already leaking, that's why I'm switching to SS, should be much less prone to cracking again.

01ssreda4

iTrader: (96)

No, I used PTFE line for e85. Mine was done in stainless mesh, and the last one I did was the black nylon mesh.