Why don't you use the stock type of fittings on the 6 cylinder ? Notice the O-Ring Seal on the end. They're used between the filter and fuel rail/tank. ****************************************************
Intake 2.8 fuel pump is feeding new line to a new on-the-fire-wall fuel filter, and then to a Mallory racing fuel regulator. The fittings to the regulator are all custom including the return. The Regulator has 5 threaded ports to either fit or plug.
I am not going to the expense of flared connectors. It is barbed connectors for the hoses.
I also am installing a Russell fuel pressure guage on line to the carb. There are a number of threaded joints to consider, and I am thinking better safe than sorry.
Arn
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03:18 PM
Electrathon Member
Posts: 5241 From: Gresham, OR USA Registered: Dec 2002
Intake 2.8 fuel pump is feeding new line to a new on-the-fire-wall fuel filter, and then to a Mallory racing fuel regulator. The fittings to the regulator are all custom including the return. The Regulator has 5 threaded ports to either fit or plug.
I am not going to the expense of flared connectors. It is barbed connectors for the hoses.
I also am installing a Russell fuel pressure guage on line to the carb. There are a number of threaded joints to consider, and I am thinking better safe than sorry.
Arn
First off, rubber lines=engine fire. They will at some time in the future deteriate and will leak fuel, under preasure, spraying a fine fuel mist all over. Very bad. This may be in 2 or could be 10 years. If you do this keep a constant eye on the lines.
If you are threading in line fittings they do not use sealer. The flare on the end of the line is what seals. Use a line wrench. Line fittings do not have barbed ends, so it will be necessary to have a short line, then a conversion fitting to go to rubber hose (unless your carb is set up for compression fittings). Use liquid teflon on them, do not use teflon tape around a carb, it can let a small flake off and plug up the carb passages.
You will need to install a fuel preasure regulator to lower the fuel preasure, the fuel injection pump will put out way more preasure than the carb wants.
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06:29 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
First off, rubber lines=engine fire. They will at some time in the future deteriate and will leak fuel, under preasure, spraying a fine fuel mist all over. Very bad. This may be in 2 or could be 10 years. If you do this keep a constant eye on the lines.
Funny, The rubber sections of the stock fuel lines on my 86 SE lasted 18 years +. If you use a quality line you will have no problems. I now have Russel braided hose for the fuel system.
As for thread sealant, I use the Permatex teflon thread sealer. It looks like a thin grease and goes on with a brush that is part of the cap.
------------------ Happiness isn't around the corner... Happiness IS the corner.
First off, rubber lines=engine fire. They will at some time in the future deteriate and will leak fuel, under preasure, spraying a fine fuel mist all over. Very bad. This may be in 2 or could be 10 years. If you do this keep a constant eye on the lines..
I don't understand why cars haven't been going up in flames all over North America. It seems to be that FI rated hose has a pretty good track record so far. But thankyou for the caution. We can't be too careful.
quote
If you are threading in line fittings they do not use sealer. The flare on the end of the line is what seals. Use a line wrench. Line fittings do not have barbed ends, so it will be necessary to have a short line, then a conversion fitting to go to rubber hose (unless your carb is set up for compression fittings). Use liquid teflon on them, do not use teflon tape around a carb, it can let a small flake off and plug up the carb passages..
You have to stop thinking Fiero. Think Holley. The connectors used on the Fiero FI system are not used on Holley carbs or racing regulators. I agree with the liquid teflon idea as being better, but how you apply teflon tape is the issue. You do not put it on the end of the thread.
quote
You will need to install a fuel preasure regulator to lower the fuel preasure, the fuel injection pump will put out way more preasure than the carb wants.
Funny, The rubber sections of the stock fuel lines on my 86 SE lasted 18 years +. If you use a quality line you will have no problems. I now have Russel braided hose for the fuel system.
As for thread sealant, I use the Permatex teflon thread sealer. It looks like a thin grease and goes on with a brush that is part of the cap.
Once again the voice of reason. I'll search out Permatex. Thanks Oreif.
Arn
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10:31 PM
Feb 8th, 2004
Indiana_resto_guy Member
Posts: 7158 From: Shelbyville, IN USA Registered: Jul 2000
Yellow teflon tape, sold at any hardware store. Its made for natural gas lines, but on the lable it says its good for any type of petro chemical. You must use this type of teflon tape to pass building inspection, I assume its different than regular tape. Just ask for gas line teflon tape, they will know what your talking about.
Cheap too, and readily available.
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07:29 AM
PFF
System Bot
Electrathon Member
Posts: 5241 From: Gresham, OR USA Registered: Dec 2002
I do agree that the rubber hose that is rated for fuel injection is a good choice, if it is properly installed with compression fittings. This stuff is is sort of spendy. Standard fuel hose held on with hose clamps is where the safety issue arises. I possibly was wrong here, I read that this was going to have rubber hose since it was cheaper than steel line, which is very cheap. It is also very durable.
Older Fords used to burn often due to the short piece of rubber hose that was installed near the carb at the fuel filter. After years of their cars burning due to the unsafe design they finally changed it.
The fuel lime that is on the suction side of the pump or the return hose is not the issue, it is the ones that are on the preasure side of the pump that caused trouble.
This regulator is called a bypass regulator. The fuel pump and return line are a continuous circuit with a bypass port that is a spring loaded, vacuum assisted feed to the carburetor.
A solid steel line from the regulator to the carburetor would not take into account engine movement.
The steel lines on the Fiero are looked up to the rubber lines and engine movement is accounted for with the rubber lines.
The heat on the Fiero lines is alot higher than a carb because the fuel lines feed thru the plenum and are in a very hot environment. The Edelbrock carb intake allows alot of air between the valve covers and the fuel line. This makes for a better environment for rubber. There are at last count 4 rubber lines attached to the carb and upper intake manifold.
It is also interesting to note that there are rubber parts all over the place and it survives years of neglect.
I found some liquid teflon today and voila! my fuel regulator assembly is together. When I can, I'll post a pic.
