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Author
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Topic: Stock Fuel Lines Are Good Until What HP?
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racsirx
CAFords OG
Member # 1710
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posted
 
 
I am just curious how much HP before you need to upgrade to bigger fuel lines, even if you have a SN95 Fuel Rails, and a Walbro 255 intank and a Walbro 255 external pump on a FOX? If I am correct the stock fuel lines are like 5/16".
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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TURBOGT
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Member # 234
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posted
i made 500 flywheel hp with 255 pump, stock fuel lines, stock fuel rail and an adj. fuel pressure regulator. I ran water/meth but I'm sure if I jacked up the fuel pressure another 10psi the stock lines would cover 500hp no problem. I've heard of guys over on tm.com making almost 600hp with stock lines.
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when u want some, u know where to get some... http://www.turbomustangs.com/smf/index.php?topic=41851.0
Posts: 361 | From: Bay Area, Ca | Registered: Apr 2001
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racsirx
CAFords OG
Member # 1710
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posted
I already made 508RWHP with an automatic, I didnt see a problem, but the stock lines do seem real small for that kind of HP.
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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95331StrimVert
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Member # 6250
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posted
Hello Lee,
I agree, the stock rails are small. I think at 500 RWHP you are pushing them to the limit. I was concerned as well so I upgraded to the BBK rails and regulator. Piece of mind ;-)
Tony
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95331StrimVert
Posts: 398 | From: Martinez ca | Registered: Nov 2005
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95331StrimVert
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Member # 6250
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posted
BBK Rails installed...
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95331StrimVert
Posts: 398 | From: Martinez ca | Registered: Nov 2005
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SmokinLX
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Member # 1684
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posted
quote:
Originally posted by 95331StrimVert:
BBK Rails installed...
How was the install/fittament? Have talked to a few people with them and they said they would'nt purchase them again ![[Confused]](confused.gif) ? Any info will be appreciated!
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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racsirx
CAFords OG
Member # 1710
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posted
Tony, I already upgraded to SN95 Fuel Rails ,which are bigger, and an Aeromotive Fuel Regulator.
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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95331StrimVert
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Member # 6250
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posted
The rails fit very well, and there is excellent clearance for the distributor. The main hassle was getting the cross over tube pressed on to the hose ends, which was a bitch. However the setup is very nice with the fact that it retains the stock regulator position. The regulator mounts on the rail. I don’t think there are any other rails that do this.
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95331StrimVert
Posts: 398 | From: Martinez ca | Registered: Nov 2005
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JohnB
Tech Moderator
Member # 969
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posted
In general, 500-550 is a ballpark answer. It is going to depend more on your injectors and how close they are to 100% duty cycle before the supply lines become a issue. Flow will never overcome pressure, due to the line size (restriction) and it being a return system. And yes, stock is 5/16".
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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