255 Walbro OEM lines/filter flow tests?

[forcefed86]

So I've read around and I keep hearing that the factory filter/banjo fitting assy pre rail is a HUGE restriction.

I seem to be running just fine on it with e85 into the 450 range. Just wondering if there have been any actual flow tests with the factory setup and a setup like this one....

EXTREME PSI : Your #1 Source for In Stock Performance Parts

Thanks!

 

[92AWDHX40]

Never saw any flow tests, but i run that one, anything over stock would be beneficial.

 

[ramsack]

Yes, that banjo bolt is a big restriction, but it doesn't do much changing out that one banjo as it would to change the whole line to 3/8" tubing/pipe (not hose, it doesn't belong under a car, running the whole length, and I don't care if it's covered with stainless mesh). I've been through this over and over. The stock line is pathetic, and yes it can support some power, but the pump is just doing extra, unnecessary work. What do you think makes a bigger impact? A small length of a fraction of an inch of a small hole, or ~15 feet of line with bends not much bigger than that banjo hole?

 

[99gst_racer]

(not hose, it doesn't belong under a car, running the whole length, and I don't care if it's covered with stainless mesh).

What's wrong with using braided hose like that?

 

[ramsack]

Hose simply doesn't belong anywhere but a joint that needs to flex or absorb vibration. It's a waste of money and a hazard to run braided hose under a car. A good analogy is why solid wiring is for running through buildings, but stranded is for anything outside the outlet in the real world, to absorb flexing from usage.

 

[99gst_racer]

Hose simply doesn't belong anywhere but a joint that needs to flex or absorb vibration. It's a waste of money and a hazard to run braided hose under a car.

Yeah, I figured it was all opinion based and nothing factual.

$38 is what I spent on hose from tank to rail. And it's never been hazardous. Why would it be? You obviously haven't spent much time around race cars at the track. A bender to bend steel fluid tubing would have costed as much or more than I spent on my hose, so you can't call it more expensive either. Every single person that runs hose proves that there's absolutely no problem in doing so. Your opinions are hollow and carry no weight.

 

[ramsack]

Good for you for doing something improper, and good luck with your safety hazard.

 

[forcefed86]

I'm aware it appears to be a "bottle neck" the factory system. As the original post stated I want actual data. I figure I can hook up the battery charger and give the pump a solid 12v and test it myself. Just trying to save myself some work if it's already been done. I'd like to know what the system flows now, then without the banjo fitting, then a "high flow" filter. Apparently it flows a lot more than most thought if I can run an HX40-Pro at 25-26psi and feed 1000cc injectors with e85. 43psi base FP.

 

[ramsack]

If you want actual data just do some calculations on pressure drop for length and diameter of tubing, that will assume it's straight, and will assume ideal conditions, and you will see that it's quite pathetic, and then you need to take into account that what happens in the real world, with bends, will be even worse.