fuel line size advice please ..
 

I have fitted my 2056 typ 4 with twin 45 dell's

i am running a bosch fuel pump ..

after some advice please..

if i weld a AN-6 fitting to the fuel tank outlet and run via pump to the existing fuel line in beetle back bone..

a..will it work or will i run out of fuel ..

b..would it be better to run new AN-6 fuel line up to a tee and feed the dell's

what pressure do i run ??

best fuel regulator ..

is AN-6 ok or too small...

thanks in advance


chris

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Hi, AN -6 is plenty.You´ll be fine.

AN -6 flows enough fuel for 800+ hp, I'm sure you'll be fine :)

thanks guys ..

Nice build!

There are a lot of drag racers running larger cc 's and dual 48IDAs on the stock fuel lines with no fuel delivery issues, though a new 3/8" would make it easier to plumb in the fuel pump and regulator with AN fittings. If you are planning to run a turbo or FI in the future, you may want to consider running dual 3/8" lines; separate lines for feed and return.

Also, you don't need to "weld a AN-6 fitting to the fuel tank outlet". You can get a -6 AN fuels tank adapter (see below) through most of the major online air-cooled VW parts sources. Make sure to run a quality fuel filter between the tank and the fuel pump.

On the fuel regulator, a Holley or Mallory dual-output "dead head" regulator with a gauge port will work just fine. You can use it as your "T" to feed both carbs. Avoid the dial-type regulators. Set the regulator for a max fuel pressure of 2.5-3 psi under load. As with above, if you plan to run a turbo or FI in the future, you may want to consider running a regulator with overflow return capability.

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