AN fittings what size ??

[Highbanked Hauler]

What size fuel  line would you use to run from the fuel cell to the fuel pump.  I am after a solid connection ,not rubber hose with clamps.

[heyoldguy]

How far is the pump from the fuel cell? How far from the pump to the regulator? Regulator to the carburetor? How much horsepower are you feeding?

[Chryco Psycho]

-6 is approx 3/8 "
-8 is 1/2"

[Rolling_Thunder]

AN fittings....      take the -# and put it over 16...    this gives you the tube size...         

-3          3/16"
-4          1/4"
-6          3/8"
-8          1/2"
-10         5/8"
-12         3/4"
-14         7/8"
-16         1"


to answer your question = I would run -6AN  ==   

[69charger440]

Its going to depend on your fuel needs. I am going to run 10AN to my pump, thats for 950 HP with fuel injection! Whats your horse power?

[bobs66440]

-6 is ok for average street use. -8 will work for most racing applications up to, say, 700 hp or so. -10 over that. Better to go too big than too small. I would go min. -8 from fuel tank to pump.

[firefighter3931]

What size line from pump to carb ?

Ideally, you want one size larger on the suction side vs the discharge side to prevent cavitation. 



Ron

[Highbanked Hauler]

  The motor is a 440  steel crank, steel heads with mild porting and was "told" it is 12-1 CR.  and was a;also told this is (speculated) to turn 500 plus HP.. I  My idea is to run E-85 as this will be limited use. I PLAN to use a NASCAR fuel cell, a mechanical pump( which I have a problem finding one for alcohol)  and don't have a carb yet ..  ANY knowledgeable input  is appreciated as I want to do it right the first time.

[bobs66440]

Be careful what fuel cell you run with E-85. Not all filler foam plays nice with alcohol. You will need an alcohol specific cell.

[Highbanked Hauler]

Be careful what fuel cell you run with E-85. Not all filler foam plays nice with alcohol. You will need an alcohol specific cell.

    Thats what I understand and also probably the liner too.  I have yet to see a fuel pump that is OK with alcohol either.

[flyinlow]

Are you going to run AN hose from the tank to the engine?  Thats a lot of hose to watch. Metal lines might be safer.  

I run 3/8" metal to with AN 6 where I need flexible. Carter street pump on a mild build 446 (470hp?)

[flyinlow]

What size line from pump to carb ?

Ideally, you want one size larger on the suction side vs the discharge side to prevent cavitation.  



Ron

  Interesting, I will keep that in mind,next time I replace the suction line.

[firefighter3931]

What size line from pump to carb ?

Ideally, you want one size larger on the suction side vs the discharge side to prevent cavitation.  



Ron

  Interesting, I will keep that in mind,next time I put replace the suction line.

That rule applies to electric pumps only....mechanical pumps are fine with the same size suction & discharge lines.  

 The motor is a 440  steel crank, steel heads with mild porting and was "told" it is 12-1 CR.  and was a;also told this is (speculated) to turn 500 plus HP.. I  My idea is to run E-85 as this will be limited use. I PLAN to use a NASCAR fuel cell, a mechanical pump( which I have a problem finding one for alcohol)  and don't have a carb yet ..  ANY knowledgeable input  is appreciated as I want to do it right the first time.

If you're planning to run E-85 just be aware that the fuel system needs to be upsized significantly. That type of fuel requires a 30% increase in volume so you will be consuming more fuel and the fuel system needs to be able to supply it  


Ron

[Highbanked Hauler]

 NONE of this is done yet and the fuel cell I am looking at is a JAZ  22 Gal. with  AN 8 fittings.. When it is done the fuel line will be well protected..

[flyinlow]

Remember the line Robert Duval said in Days of Thunder, thinking outloud as he planned Cole Trickles race car " I am goin"a built you with a fuel line that holds an extra gallon of gas" ..... so I guess bigger is better.

[Highbanked Hauler]

Remember the line Robert Duval said in Days of Thunder, thinking outloud as he planned Cole Trickles race car " I am goin"a built you with a fuel line that holds an extra galion of gas" ..... so I guess bigger is better.

  Yea, I remember that line..