Anyone know about fuel fittings?

[Jamieg285]

OK, I have a new carb somewhere between Andy's and here.  When I fit it, I want to completely replace the fuel feed system.

The general plan is - new hose from tank to new electric pump.  New pipe from pump to engine bay, through new filter, through new regulator, through pressure guage sender to carb.

I want all vivisble piping to be braided.  What fittings should I be looking for?  

I don't know what comes with the carb or pump.  From memory, the regulator doesn't have any yet, but has screw fittings to allow whatever fitting I choose.  Filter is currenlty all plastic, so would attach with hose clips, but this can be changed for a different filter if different fittings are used elsewhere.

Been looking at various sites, but there's so many options, I've gotten confused.

[55starchief]

If its fuel it will be -6 or JIC6 as its also known. Silverstone is the easiest place as there are like 4 places up there that sell all that stuff

[Incursus]

Let me know what you find cos I need some fuel pipe as well

[55starchief]

I will be going to the circuit some  time soon as i need to get some 3/8" and 1/2"  Goodridge 536 fuel line. You guys probably wont buy this stuff as its about £30m also its not braided but a wipe clean silicon coated hose in blue. I will howebver say that it is the best hose i have come across and is what we ran on the Beatrice with no problems

[Incursus]

I need cheapish stuff cos its about 8m.  Needs to be good enough for the new engine/fuel pump though

[Jamieg285]

I'm currently trying to put together a shopping list, so that I have (virtually) everything I need at once.  I am hoping to get most bits from the US, as they are likely to be cheaper than Silverstone.

The pipe itself is pretty easy - just need plain hose for the underside of the car, and then braided for when it becomes visible.  The main thing is to find some at a decent price.  In brief searches I have done in the past, there seems to be a wide range in prices, but no real information as to why.

[Jamieg285]

Quoting: Incursus

I need cheapish stuff cos its about 8m. Needs to be good enough for the new engine/fuel pump though

Ditto - I think

[Incursus]

Quoting: Jamieg285

and then braided for when it becomes visible

I thought braided was important for below the car to protect the pipe?


me as well?  

[Incursus]

http://www.jegs.com/webapp/wcs/stores/servlet/Cate goryDisplay?catalogId=10002&storeId=10001&category Id=79814&parentCategoryId=10301&langId=-1  Seems cheap and cheerful....

[55starchief]

Guys 8mm or 3/8 hose aint gonna be big enough on your motors min recomended fuel line from tank to pump and pump to regulator is 12.5mm or 1/2" for performance motors

[Jamieg285]

Quoting: 55starchief

Guys 8mm or 3/8 hose aint gonna be big enough on your motors min recomended fuel line from tank to pump and pump to regulator is 12.5mm or 1/2" for performance motors

OK, good call.  Might as well get it right from the start.

What that in - AN?  -8 ?

[Roadkill]

1/2"



Would've thought 3/8 or 10mm I/D would be O.K . . . .

[Jamieg285]

Quoting: Incursus

I thought braided was important for below the car to protect the pipe?

Nah, it's more for show on a street car.

[FUBAR]

vehicle wiring products sell braided Hoses.

[Jamieg285]

Quoting: Roadkill

1/2"

 

Would've thought 7/16 or 10mm I/D would be O.K . . . .

See, it's all too confusing?

8-9-10-12???  How do we work it out?

Won't a fatter pipe affect the pressure?

[55starchief]

Quoting: Roadkill

1/2"



Would've thought 7/16 or 10mm I/D would be O.K . . . .

most carbs have the facility to dual fuel so in order to keep good pressure from the regulator on twin lines the main line needs to be twice the output lines to the carb.

So if you were gonna run 3/8 lines from the regulator to carb a 1/2" main line would be about right.

Also its recomeded that you avoid using 90 and 45 angle to get from and to the cardb etc. If you must use bends use the tube style 90s

[55starchief]

Quoting: Jamieg285

See, it's all too confusing?

8-9-10-12??? How do we work it out?

Won't a fatter pipe affect the pressure?

not really mate

-8 or jic 8 is 3/8 hose the 8 being the tube size

there is no -9 only -3 and -5 are odd numbers used for brakes and clutch

A fatter pipe wont affect pressure but will aid the flow of fuel. The pressure is regulated at the end of the line before you split to the carb. the regulaor should be as close to the carb as posible

[Jamieg285]

Found a page with AN hose, but no other measurements.

How do the following match up to mm and inches?

-4
-6
-8
-10
-12

[Incursus]

http://www.holley.com/data/Products/Technical/Fuel  %20Pump%20Tech%20Info.pdf

Kinda helpfull

FUEL LINE SYSTEM
The fuel line system should be routed to avoid running near hot spots, such as
various exhaust system components, and designed to promote maximum fuel
flow. Most factory stock fuel systems utilize 5/16" fuel lines. This size works
well on street applications with stock engines. When the horsepower requirements
go up, however, the inadequacy of this line size soon becomes apparent.
A #6 (3/8") line size is sufficient for all street performance applications
and some racing applications. #8 (1/2") fuel lines are used on everything
else, including alcohol applications. Avoid using rubber fuel lines, or use
them sparingly, for two reasons. First, rubber is more resistant to the flow of
fuel than any hard line. An actual pressure loss can be measured over distance.
Second, for safety’s sake, it’s not a good idea to use rubber fuel line,
especially when using a high pressure performance fuel pump.

[Jamieg285]

Quoting: 55starchief

most carbs have the facility to dual fuel so in order to keep good pressure from the regulator on twin lines the main line needs to be twice the output lines to the carb.

So if you were gonna run 3/8 lines from the regulator to carb a 1/2" main line would be about right.

Also its recomeded that you avoid using 90 and 45 angle to get from and to the cardb etc. If you must use bends use the tube style 90s

My carb only has single feed.

However, in the future I will be swapping to Pro-Flo EFI, but I don't know the fuel requirements for that yet, apart from it will need higher pressure and therefore a different pump.

[55starchief]

Quoting: Jamieg285

How do the following match up to mm and inches?

-4
-6
-8
-10
-12

-4 = 5.56mm
-6 = 8.73mm
-8 = 11.12mm
-10 = 14.27mm
-12 = 17.47mm

-3 and -4 are mainly brake and clutch sizes unless your in the F1 industry when they use -6

[55starchief]

Quoting: Jamieg285

My carb only has single feed.

what carb is it ?

here is a link to a suppler of goodridge hose, 200 and 600 are braided 5s6 is not. I will go for the 536 as everything under my hood will be blue silicone also i have had good results with the 536 before

http://www.performancecentre.co.uk

[Jamieg285]

Carb is the Edelbrock 1411 - Performer 750cfm elec choke

Will check those other links later.

[55starchief]

Quoting: Jamieg285

Carb is the Edelbrock 1411 - Performer 750cfm elec choke

Am pretty sure this can be dual fueled with the addition of a second fuel nipple on the second otherside of the carb

[Incursus]

Part No. FHO15
Car Universal
Description Black cotton overbraid
Int. dia. 12mm
Price (per metre) £3.60


Looks like the stuff....