RedGut86

iTrader: (1)

I think I'm going to route some new fuel lines from the frame rail mounted filter to the engine. I don't frequent the drag strip but I want to make sure it is legal so I don't have to worry about it in the future.

I'm using braided lines, and I'm thinking of bringing them up and along the firewall over to the frame rail to the back of the intake manifold. Any issues with running lines along the firewall?

Also, I heard there used to be problems of braided lines needing to be replaced every 3 years. Is this just internet banter or what?

Thanks in advance.

cambirdracing

iTrader: (4)

I have run steel braided lines on my car for over 10 years and never had aan issue.

I'm not sure about the line itself running along the firewall, but I do know that you cannot have a t fitting,y block or regulator within 6" of the firewall.


1:5 FUEL SYSTEMS

Location: All fuel tanks, lines, pumps, valves, etc. must be outside
of the driver’s compartment and within the confines of the frame
and/or steel body. Cool cans, fuel-distribution blocks, etc. must be
located at least 6 inches forward of the flywheel/bellhousing area on
rear-wheel-drive (RWD) vehicles, and on opposite side of
flywheel/housing area on front-wheel-drive (FWD) vehicles. Fuel
pressure gauge isolators, with steel braided line, may be mounted
on firewall.

Tanks: When permitted by class regulations, fuel tanks located
outside body and/or frame must be enclosed in a steel tube frame
constructed of minimum 1 1/4-inch O.D. x .058 chromoly or .118
mild steel tubing. All fuel tanks must be isolated from the driver’s
compartment by a firewall, completely sealed to prevent any fuel
from entering the driver’s compartment. All fuel tanks must have a
pressure cap and be vented outside of body. A positive-locking
screw-on fuel tank cap is mandatory on all open-bodied cars.
Insulated fuel tanks prohibited. When used, fuel cells must have a
metal box protecting the part of the fuel cell that is outside of body
lines or trunk floor, excluding hose connection area in rear. Nonmetallic
fuel cells or tanks must be grounded to frame.

Lines: All non-OEM fuel lines (including gauge and/or data
recorder lines) must be metallic, steel braided, or NHRA-accepted
“woven or woven-pushlock.” A maximum of 12 inches total (front to
rear) of non-metallic or non-steel braided hose is permitted for
connection purposes only; individual injector nozzle and motorcycle
fuel lines are excluded. Fuel lines (except steel braided lines) in the
flywheel/bellhousing area must be enclosed in a 16-inch length of
steel tubing, 1/8-inch-minimum wall thickness, securely mounted as
a protection against fuel-line rupture. Fuel lines may not be routed
in the driveshaft tunnel. It is mandatory that fuel lines passing
supercharger drive belts be steel braided, NHRA-accepted woven
or woven-pushlock, or be enclosed in protective steel tubing. A
current list of NHRA-accepted woven or woven-pushlock fuel lines
is available on NHRA.com. All NHRA-accepted fuel lines must use
ends that are specifically designed for the type of fuel line being
used. No hose clamps allowed on NHRA-accepted fuel lines.
Pumps/Valves: Cars with non-OEM-type mechanical fuel pumps
must have a quick-action fuel-shutoff valve within easy reach of
driver and located in the main fuel line between the fuel tank and
the carburetor and/or injectors. Fuel recirculation systems not part
of normal fuel/pump system prohibited. All cars in Stock, Super
Stock, Competition, and Pro Stock must be equipped with a
positive-lock drain valve located between the fuel tank and the
carburetor(s) or fuel injector to facilitate removal of fuel samples for
fuel-check purposes.

RedGut86

iTrader: (1)

Alright, sounds good. I think I should be ok on the 6" rule with it mounted on the end of a rail.

I can't really wrap my head around a better place to route the lines than up and then straight across on the firewall since you can't have them near the bellhousing and I don't want to string them through the exhaust.

kenSS

iTrader: (1)

you can't have them near or on the firewall. And you can't bring it in alongside the framerail by the tranny either because of tranny failure or flexplate/flywheel decides to let go and cut the fuel lines. Must be rounted on the outside of the frame to regulater.

RedGut86

iTrader: (1)

Hmm, yeah I was worried about that. This is my first time plumbing up a car with non-stock lines and I appreciate the input.

So I guess, I need to come across the K member and run up the front of the engine and run over the manifold to the back.

I am using stock lines up until the flywheel area, then adapting at the fuel filter.

It probably has somewhat similar routing to your 86 F body, it is an 86 Y body.

kenSS

iTrader: (1)

I have -10 all the way to up to my regulator. It is routed on the outside of the passenger side frame rails and it comes up in the front right outside wheel well and then i drilled a hole near the inside of the wheel well by the frame and ran the lines in that way right up to my regulator which is mounted on the inside wheel well with -6 lines going to the bowls of the carb.

RedGut86

iTrader: (1)

Hmm, ok. I'll have to go look around the engine bay later and try to visualize this in place. There is seemingly no room to run them with the 1 3/4" headers, I just can't believe people get 2" primaries to fit these cars.

(The stock lines are very close, part of the reason I'd like to re-run them.)