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Posted by: ETMracing Dec 11 2013, 11:43 AM

Been reading quite a bit of posts from here that date back to 05' and have some great input.

Re-doing my dual carb fuel line routing on my 914/4 2.0. Tank, pre filter, low pressure pump,.....then should it go fpr, gauge, t-fitting, carbs, no return?

Its a 1 in 2 out FPR. And a inline FPG.

Thanks 914World

Posted by: brant Dec 11 2013, 11:55 AM

there are benefits of a return line
thats how the factory did it and it does keep the fuel cooler and thus adds power

here is a thread with diagrams
its been discussed so many times that I sound like a broken record:

http://www.914world.com/bbs2/index.php?showtopic=123360&st=0&p=1470608&#entry1470608

Posted by: ETMracing Dec 11 2013, 12:48 PM

QUOTE(brant @ Dec 11 2013, 09:55 AM)

there are benefits of a return line
thats how the factory did it and it does keep the fuel cooler and thus adds power

here is a thread with diagrams
its been discussed so many times that I sound like a broken record:

http://www.914world.com/bbs2/index.php?showtopic=123360&st=0&p=1470608&#entry1470608

yup been studying that thread, so its okay to run through the first carb and then out to the next?

Posted by: ETMracing Dec 11 2013, 12:52 PM

option B it is then, thanks !!

Posted by: stugray Dec 11 2013, 04:58 PM

I used:
Fuel cell (tank), filter #1, holley (red) pump, pressure regulator (all in front trunk), fuel pressure gauge (in engine bay) @ splitter, see-thru fuel filter at each carb, feed to each carb,
No return.

Plan on removing the cheap see-thu filters@carbs before racing (but they really help with startup when you leave the car sitting for a few weeks without firing up - you can see when the bowls are full)

Posted by: r_towle Dec 11 2013, 06:05 PM

QUOTE(ETMracing @ Dec 11 2013, 01:52 PM)

option B it is then, thanks !!

Fluid dynamics.
Pressure is the same everywhere, no matter how you run it.

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