plumbing question
Thread Starter
Joined: Jun 2005
Posts: 4,641
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From: cookeville, TN
plumbing question getting ready to purchase my fuel system plumbing and i got a question
you plum the feed line up to the bay and put a y block on it so you get a feed to each rail correct?
but do you only do one line for the return off the rail to the regulator or do you need a y block to run one off of each rail??
you plum the feed line up to the bay and put a y block on it so you get a feed to each rail correct?
but do you only do one line for the return off the rail to the regulator or do you need a y block to run one off of each rail??
I've found some pretty nifty diagrams on here over the last couple of years. Here are a couple of options. I think "B" or "C" are the most simple methods, and most often used.
You can either...
A: Run the feed line to a Y-block. Off the Y-block, run one line to each rail. After the rails, run a line from each rail to a Y-block, and run one line to the regulator. (I think this is what you were asking about, but seems like too much plumbing for a clean appearance)
or
B: Run the feed line to a Y-block. Off the Y-block, run one line to each rail. After the rails, run a line from each rail to the regulator, providing the regulator has two inlets, as most do. (I think going this route makes the most sense if you don't want to feed one rail from the other using a crossover)
or
C: Run the feed line into one rail, use a crossover to the other rail, then go out of that rail out to the regulator. (If you don't want to go the Y-block route)
You can either...
A: Run the feed line to a Y-block. Off the Y-block, run one line to each rail. After the rails, run a line from each rail to a Y-block, and run one line to the regulator. (I think this is what you were asking about, but seems like too much plumbing for a clean appearance)
or
B: Run the feed line to a Y-block. Off the Y-block, run one line to each rail. After the rails, run a line from each rail to the regulator, providing the regulator has two inlets, as most do. (I think going this route makes the most sense if you don't want to feed one rail from the other using a crossover)
or
C: Run the feed line into one rail, use a crossover to the other rail, then go out of that rail out to the regulator. (If you don't want to go the Y-block route)
Not really recommended on higher power applications. You want the fuel to flow through the rails and into the regulator.
Do a quick search for "fuel+rails" and you'll find some pretty good information.
I saw one where Nasty N8 said he feeds into one rail, crossed over into the other, then to the regulator for applications up to 1000hp. Anything over that, he recommended the Y-block.
Do a quick search for "fuel+rails" and you'll find some pretty good information.
I saw one where Nasty N8 said he feeds into one rail, crossed over into the other, then to the regulator for applications up to 1000hp. Anything over that, he recommended the Y-block.
The LS engine is a returnless system. So your going to see a lot of people not running a feed/return from each rail.
Most guys will run a single feed and crossover then to the regulator and back. Simple and it will work fo a lot of applications.
Tony.
Most guys will run a single feed and crossover then to the regulator and back. Simple and it will work fo a lot of applications.
Tony.
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Originally Posted by blackbyrd
i dont like the looks of of a cross over but your saying people run a return off one rail with no cross over??
im not doing a cross over im y ing the feed
im not doing a cross over im y ing the feed
Yep, the alum line runs from the pass. side rail to a "T" fitting on the drivers side rail. The braided line you see by the brake booster runs from the "T" fitting to the FPR. You could use a y fitting if you wanted or run one line line off each rail to the FPR also.