Pics of Earls AUTO-FLEX hose and fittings for TBI fuel lines.

I used the stock fittings that go into the TBI and then bought "Earls" adapters, fittings and hose to suit. Following are Summit part#'s I used. Please check Earls website before placing any orders to ensure you're getting the right stuff.

Also, I can't stress enough: This is a pressurized system carrying gasoline. After installation, pressurize the system to check for leaks. When starting the vehicle for the first time, please HAVE A FIRE EXTINGUISHER READY. It's cheap insurance.

2 of EAR 991954 (-6 to 14 mm (on TBI) adapter)

2 of EAR 991955 (-6 to 16mm (on TBI) adapter)

1 EAR-809106 (-6 90* coupler: TBI drivers side)

1 EAR-812006 (-6 120* coupler: TBI pass. side)

2 EAR-303006 (3' lengths of -6 AUTO FLEX hose)

2 EAR-AT800106 (Ano-Tuff Swivel Seal)

Adapter/Fitting/Hose Sequence used (starting at TBI)
TBI unit
Stock Hex fitting
Adapter (either 14mm or 16mm to -6 size, depending on supply or return)
-6 elbow (90* or 120*, depending on which side)
AUTOFLEX hose fitting
AUTO FLEX hose
AUTO FLEX hose fitting
ANO-Tuff swivel seal (black fittings in pics)
Adapter (either 14mm or 16mm to -6 size)
Meets gas line from fuel tank.

S-D

 

I used a 90* -6 fitting here.

 

Website to check parts numbers and selection is here:

http://www.earls.co.uk/

 

Pass side 120* fitting.

 

This is a shot of where the stock supply/return lines meet the SS braided stuff. Ano-Tuff swivel fittings are the black ones- they were needed to properly install the setup.

 

Hi

I think the part number is EAR-812006

It is a 120 Degree, -6 AN, Swivel Seal

Tom

 

Great info here. I will add this to the sticky. Good job man and good pics

 

Just the thread I was looking for ! I couldnt find the sticky Shifty spoke of . . .

I Just purchased the "kit", and saw you had the above two P/N's transposed
not that it makes much difference, but thought id call it out.

2 of EAR 991954 (-6 to 14 mm (on TBI) adapter)
2 of EAR 991955 (-6 to 16mm (on TBI) adapter)

again, great post !

 

Thanks,
I changed the info in the first post to correct the transposition. I can see getting those two swapped.
Glad the thread helped-
S-D
Dane- I incoroporated your info on the 120* passenger side fitting into the thread also- Thanks!

Shifty-
Thanks!

 

Is it just me or is there a line running from the coolant passage on the intake to the AIR tubes on the left side headers in that first pic?

 

Its just you. !
The Vortec-TBI intake has an external EGR. That is what that is all about.
I was supposed to write a tech ariticle on that, but being that I'm lazy, never got around to it!
S-D
It works well, I've put on about 3500 miles and only gotten a EGR code once.

 

Thought I would post some remarks for those using the Edelbrock TBI w/EGR manifold.

If you have the Edelbrock TBI manifold with EGR the passenger side fitting can be a pain. Edelbrocks' design reloactes the CTS behind the throttle body, right where you want to route the return line. In addition, the EGR valve gets in the way of positioning the swivel-adapter, as does the IAC.

A little finessing on the elbow with a shop vise and everything buttoned up rather nicely.

 

what fittings would you use if you wanted to go from the stock hard lines to braided? (elimateing the rubber hoses)

 

Just spoke with a tech at www.anplumbing.com They are the #1 seller of Earl's plumbing, etc. He stated never use Auto Flex hose as standard gasoline with it's 10% alcohol and other components will eat away at the rubber lines inside the Auto Flex hose causing vapor leakage and eventually a loss in integrity of the hose. He said the Auto Flex is good for about 1 year only.

He recommended the Speed Flex hose as it has a lifetime warranty and will never deteriorate.

Just a thought for everyone.

I will be posting my fuel line project in the next few weeks. I am re-routing my lines. I will be adapting to the factory lines from the tank that are mounted on the driver's side fender under the hood. I will run the lines back under the break boost, behind the washer pump along the firewall then directly on either side of the distributor and directly into the back of the TBI unit.

Any ideas? Anyone done this yet? I have all the parts, but waiting on new manifold to be bored, etc.

 

stock hard line to hose I used a Aeroquip compression fitting.

 

So you cut the lines to use the compression fittings? What sizes did you use?

 

yes hard line cut. I can measure for you if I remember. Regardless the return and the inlet are different sizes(84 vette). I can send a pic to your email address.

 

Thanks. I can use my calipers to measures the lines. I was thinking about doing the compression fittings instead of adapting. Not sure what route i will go. Thank you!

 

Whats the item number for the driver side fuel adapter that goes into the throttle body? I think its the one the fuel goes in through. I still have the stock one just cut and clamped onto the fuel line, looks ugly and I would like to get the proper fitting.

Is it EAR-809106?

And also nice setup!

 

Great Post! I am just about ready to drop my motor in and this will help greatly to get the fuel lines correct.

 

www.anplumbing.com The best price for Earl's Plumbing that I have found yet. These guys are great and very helpful. Lots of "how to" videos as well.

991955 16mm male to -6 AN male Driver's Side (Inlet)

991954 14mm male to -6 AN male Passenger's Side (outlet)

Always use stainless or aluminum fittings. Remember to use Speed Flex hose only as it has teflon insert and NOT rubber.

 

Alright so I need 991955 and 809106?

 

Tim... The part number you are asking about depends on how you want to route out of the back of the TBI unit. If you want to route it back along the manifold to behind the alternator, etc.

What's your plan?
----------
Yes 809106 is the swivel seal hose connector that you will need along with the adaptor.

 

Im not using the charcoal canister. The way its routed now is that the 2 line to the top right of the picture that I posted go to the fuel tank. And then where the 2 lines go off the bottom of the picture they go to my fuel pressure regulator. Im not exactly sure where ill put the regulator after I put my supercharger on, probably on the side of the supercharger [about where the throttle body is now]

 

The way you have it setup now you should be able to go with a straight connector 800106 instead of the 90. 991955 and 800106 should do you good!

 

Ill just go with the angled one because the supercharger puts the throttle body further back and at an angle, so I dont want to have the straight one give me any problems with clearance.

But thanks for the help!

 

You're right. With the supercharger your best best is the angled one. Good luck and post those pics and let me know when your project is done

 

Just check out my thread, ill try to update it at least twice a week with pictures and such -
https://www.thirdgen.org/forums/tbi/...ng-my-s-c.html