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TBI fuel routing pics?

Mastiff

Mastiff

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Does anyone have some pics they can share of how the fuel routes to/from the TBI/tank? I can't picture how it gets from the frame rail to the TBI. I'd also like to see how it gets from the tank to the frame. If anyone has it with headers, that would be helpful too.
 
Nobody? Maybe someone could just snap a shot for me of the driver's side of the motor, looking down/back. I think the lines should be visible somehow getting to the frame?
 
I'm sorry, I don't have any pics nor do I have a camera capable of taking one.

IIRC you are pretty hard pressed to see the lines down that far, firewall is too close.

What are you trying to figure out?
 
I can't visualize how to get from the frame to the engine past the pipes. Right now I route starting back by the crossmember and run the hoses up the transmission brace. It's a hack and is preventing me from fitting a pipe through the gap beside the t-case.

Pics here of what I've got going: http://coloradok5.com/forums/showpost.php?p=3495856&postcount=50

I'm considering using my factory hard lines all the way up to the front and then routing the fuel over top of the engine. I read that some car applications did that from the factory anyway.
 
From the tank there are braided flexible lines leading over to the passenger framerail going to steel lines, those lines (fuel inlet) goes into the fuel filter mounted on the passenger frame rail just behind the rear seat, then the lines continue up the passenger frame rail to around the from spring shackle then are terminated again to braided flexile lines which go up the passenger side of the engine near the bellhousing and those lines have a steel line crimped on which goes into the TBI fuel fittings.

Forgot to add, I checked out your linked pic and you should expect that front driveshaft to hit that exhaust pipe really easily.
 
I'm liking the idea of routing the fuel from the front. I can use my existing hard line all the way to the old mechanical pump area, then over the top of the motor to the TB. With my headers how they are, coming from the side is never going to be clean.

I think what I want to try to pull off is hard line from the TB to the front of the motor, then hose to the frame. I can't quite figure out how to get into hard line from the TB though. Right now I have AN6 male at the TB, which is adapted from female taper pipe thread IIRC. Any thoughts on the easiest way to get into hard line?
 
Aren't the fittings from the hard line to TB the same "Saginaw" fittings as at the fuel pump?

I'm headed this way eventually, as I'd like to run new fuel lines up the passenger side of the engine, to front of the block (my fuel rails dump there), and while it's pricey, the Mastercool tool seems to be the only approach. My lines right now (and for the last 10 years? lol) look like yours, except from the tank to the frame since they are on the drivers side now. In my case I will need to re-do brake lines and make an evap line, so I should get good use from the tool. It's not cheap, but IMO adapters are not the way to go, and I don't mess around with fuel lines if I can help it, especially where it's hot.
 
I think my setup has the factory adapters replaced with ones that go straight to AN6 male. I believe the factory adapters look like this:

76307d1059012442-whadidya-do-tbi-fuel-lines-fittings-old.jpg


But I don't know if these are readily obtainable. Is the TB end of that any sort of standard thing that I could order?

My other issue is that I have a nice fuel pressure sensor adapted in using AN stuff right now. I need to figure out how to keep that with the hard line setup, without having a stack of adapters (TB -> AN -> fuel pressure -> AN -> Saginaw -> hard line). There's not a ton of space back there.
 
It sounds like I did something like what your planning. I used my stock hardline all the way up to the engine crossmember. Then used rubber hose from that over to the mechanical fuel pump mounting location. I mounted a fuel injection filter to the fuel pump block off plate. Then ran stainless lines up the front of the engine to the throttle body.
 
The line into the TB adapter pictured is the Saginaw fitting used elsewhere on the lines.

I know people love their fuel pressure gauges, but unless keeping it somehow makes your life easier in line routing, I'd seriously consider ditching it.
 
bp71k5 said:
It sounds like I did something like what your planning. I used my stock hardline all the way up to the engine crossmember. Then used rubber hose from that over to the mechanical fuel pump mounting location. I mounted a fuel injection filter to the fuel pump block off plate. Then ran stainless lines up the front of the engine to the throttle body.
Click to expand...

Sounds awesome. I like the filter idea. I was scratching my head for where to fit it on top of the motor. Do you have any pics?
 
dyeager535 said:
The line into the TB adapter pictured is the Saginaw fitting used elsewhere on the lines.
Click to expand...

Yeah, what is the fitting called that goes into the TB? I don't have the things in the pic anymore and need to get some.

I know people love their fuel pressure gauges, but unless keeping it somehow makes your life easier in line routing, I'd seriously consider ditching it.
Click to expand...

Yeah. I have a sensor that is read by the ECM and displays on the laptop when I'm monitoring. It also goes into the tuning logs. You don't need it until you do. :rolleyes: But if it makes a big mess of things to keep it, I'll get rid of it.
 
Are you looking for what the fitting "style" is? Or just what the part is called? I'm pretty sure it's some proprietary GM fitting, I've never seen it used elsewhere. Has the flat teflon washer to seal. Goofy.

If you can and want to monitor fuel pressure with the ECM, could easily get one of the adapters that will fit between the fuel filter and fuel line fitting.
 
Bent some brake line the way I wanted and then sent it to inline tube to have it duplicated in stainless and add the hose ends. Was less than $100 but don't remember exact cost.
 
bp71k5 said:
Bent some brake line the way I wanted and then sent it to inline tube to have it duplicated in stainless and add the hose ends. Was less than $100 but don't remember exact cost.
Click to expand...

That filter mounting approach is genius, do you happen to remember which filter you went with? Did it come with mounting provisions, or did you have to fab something up?

Here's the pic, just for convenience:

attachment.php
 
It's a Mallory fuel injection filter from summit/jegs. It has a bracket that I just drilled two holes to match the fuel pump blockoff plate. It the gold colored metal on top of the filter in the picture.
 
Here's my low budget version of front routed fuel. I used Dorman fuel line repair pieces and bent them using a Harbor Freight bender.

20150215_194210.jpg


I copied the fuel filter idea:

20150215_194239.jpg


Retained the fuel pressure sender. Camera decided to focus on distributor...

20150215_194304.jpg


Haven't fired it up or leak tested yet. The only kludge is that I ran 5/16" hose from the TBI return and am using 1/4" factory line on the frame, so just clamped it down extra snug with two clamps.
 
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