Fuel line routing questions

[XLexusTech]

Hi gen 1 camaro ls3 ... Using Ptfe hose and a a vapor worx return less system.

first question I was considering running fuel line aprons the back of the engine. Specifically using resting clips that will bolt to the bellhouing. (Quick time so not to worried about the clutch coming apart and that being dangerous. So what concerns me about that location is the exhaust headers. The line will have to go over the top of them. thoughts or pictures of a si liar setup appreciated



second question ... If I run the line attached to the inside of the chassis it will end up real close to the mufflers eventually. If I run on the outer side of the chassis (think after market subframe And farm connectors) it will end up coming out by the lower suspension arm (where the leaf spring perch is) so what to do? Pics or ideas appreciated

[Zspoiler]

No you keep it on the outside the frame ,and away from the heat.Just like the factory does.There is a reason why the factory does this.For safety and to keep the fuel from vapor locking.I run a 1/2 fuel line with Adel Clamps. on my 1979 Z-28 RS Camaro .Because it has a Supercharged small block Chevy.and it heeds the fuel volume.And if you are worried about the clutch exploding .I would get good quality clutch set up with a steel flywheel.And a scatter shield.Protect thy feet.

[HandOverFist]

He had already stated he had a scatter shield bellhousing.

Just ran mine the other day in the El Camino. They are run inboard of the frame to the point of the bell housing, then in/out of the frame and between the inner and outer fender. The 327 being a solid lifter engine I did not want to have to deal with lines running over the valve covers.

[icemanrd19]

Don't over think it. Use the stock line and routing

[XLexusTech]

A picture of the problem.. This is not my car but same suspension. Notice if he ran a standard shaped muffler it wold be much closer to the fuel line

[icemanrd19]

yes but he also has 3 or 4 hoses there from the looks of it. What is the size of your stock metal fuel line? you are only running one line from the gas tank to the engine.

[XLexusTech]

yes but he also has 3 or 4 hoses there from the looks of it. What is the size of your stock metal fuel line? you are only running one line from the gas tank to the engine.

Yes he is running a return I have a single -6 line to deal with. One of my concers is that the line is over the frame and exposed .. So I could just do it like the picture and get some shielding for the muffler and hose But I was curious what others thought. Also curious about running it behind the engine ... That used to be a big no.. No but that was also in the days when hose was less advanced than today

[camrat68]

I ran mine up through the sub frame connector and then through the frame rail all the way to the front of the passengers side frame rail horn. It's worked since 2009 but makes me nervous enough that I plan to change it. I ran -6 feed and return and I wonder if my boiling fuel issue was because of being insulated inside of the rails and out of the airstream.
I bought a 3/8" stainless line with FI ends and 2' extra length on the engine end that runs where the stock line ran.

The old reasons why your choice of line routing were a big no-go haven't changed. The new lines are no more resistant to catastrophic damage than the old ones. If you plan to run it on the track, check their rules while in the planning stages.

Jim

[CarlC]

Why not run the line up the LH side of the car?

[XLexusTech]

Why not run the line up the LH side of the car?

Doesn't really save me much because swapping the fuel rail can get me the feed line on pass side.

Plus my tank has this nifty attachment point for a bracket to hold the line on the passenger side only :-)

It is an option though if I need to go that way .

[icemanrd19]

here is the underside



here is where the fuel line comes up but i actually went under my foot panel so its hidden



Heres mine where you can't see the line

[fishface]

This is a great subject and I am very interested as I am getting ready to route a single ptfe hose as well. My plan is to use a Brown and Miller Racing hose with their heat resistant coating. Curious as to minimal clearance from headers to hose as I planned to go across firewall from frame and come in from behind the engine and take a 90 elbow into fuel rail.

[HandOverFist]

This is a great subject and I am very interested as I am getting ready to route a single ptfe hose as well. My plan is to use a Brown and Miller Racing hose with their heat resistant coating. Curious as to minimal clearance from headers to hose as I planned to go across firewall from frame and come in from behind the engine and take a 90 elbow into fuel rail.

I thought about doing the same on the El Camino, but decided to approach it from the front instead. I don't think efi has as much problem with heat soak as carbs, but I am running a return also. Another benefit coming in from the front is it will make it easier to add a regulator down the road if I make any changes.

[icemanrd19]

why are you all using hose from the tank to the engine? Seems expensive. Use the stock line and when you get to the engine bend it over behind the engine and its hidden. run a foot long hose from the metal line to the gas tank and another from the metal line to the fuel rail. Stop overthinking all of this. Stock brake lines on the left side and stock fuel line on the right side

http://www.firewheelclassics.com/sto...=&SKU=FGLLINES

[Fuelie Nova]

I have been thru this also... sometimes I tend to overthink things. All I did was use a stock 3/8 steel line to run most of the length of the frame, where it got close to the exhaust area I used some of the black 3/8 DEI insulation and used the rubber that comes with it to seal the ends.
Never had a fuel delivery problem.
Tom

[XLexusTech]

Well my stock line went the way of the dumpster about 5 years ago.... that said I have the PTFE and dont mind spending $$ on this project..
SO the orange car regardless of line type has the same thing I was asking about.. passing the line over the frame...
The Yellow car has the fuel rail swapped.. also a thing I asked about.. and on your car since you are using the OE line I guess you are picking it up were the OE fuel pump would be.. thats one of my thoughts.. run the ptfe in the fender well with the AC line and end up down by the OE fuel pump.. have a bulkhead there and plumb the motor on the stand to connect to that bulkhead.

[icemanrd19]

Mines ran just like the yellow except I didn't go up on the firewall it's under the floor board there. Then I ran a line from the hard line to my fuel rail. If I wanted to use the stock fuel rail I could and it would be quick. Replace the flex line between my Hardline and fuel rail with a longer one. I like the idea of using metal stock lines for the long part of the car

[Fuelie Nova]

Not to take this off target but what are you going to run for a fuel pump? Im just finishing up on my installation of Carl's vaporworx setup, my goal was slowing the pump down when not needed to help with heat.
Nice build thread.
Tom

[icemanrd19]

^^^^^^^ why?

K.I.S.S

[dhutton]

^^^^^^^ why?

K.I.S.S

To avoid dumping unnecessary heat into the fuel when idling and cruising. To prolong fuel pump life and improve reliability. There are many good reasons why GM uses pwm control of their fuel pumps. There is a lot to learn from them that we can use in our cars. They are not stupid by any means. Nor are folks using the vaporworx PWM controller....

Don