currently in the process of building my turbo 5.3 Camaro. I have a walbro 450 lph pump that im using, will a 6 an feed and return line be enough to support 700 rwhp??

 

Why not just go with a #8 feed with a #6 return?? That'll leave you room to grow a bit more when you want. That single 450 might be a little small depending on how much boost you wanna run. From what I've been told its better to over build your fuel system.

 

X2 for -8 feed and -6 return. I'm doing the same thing in my car with dual 340s to be able to hopefully hit 1000 in the next few years and I may upgrade to -10 supply and use the -8 for return. Always better to over design than under design.

 

I bought the racetronix dual 340 kit for my 3rd gen. Ill be using 8 feed 6 return lines. One of the racetronix techs was telling me when buying a fuel filter for pumps like that you need at least a -10 fuel filter because anything smaller doesn't have the needed surface area(something along those lines anyway)

 

That might be one of the dumbest things I've heard in a long time...

 

6 AN line is more than enough for a single 450.

 

I wonder what reasons you've got besides the dumbest thing I've heard in a long time?? That's what the guy said to me. Kinda just believed them seeing how they build high performance fuel systems and I don't

 

Because the guy associated inlet/outlet size with the filter area, which do not always relate. The SAME filter can have -6,-8,or -10 fittings. It's a matter of which fuel line you are running. Go by filter area, NOT fitting size. The comment was correct. It IS the dumbest thing that could be said.

 

Because inlet/outlet of the filter housing shouldn't have any correlation with the filter flow rate. You can put a 4 AN inlet/outlet on an industrial diesel spin on fuel filter and the filter itself will flow 100x the inlet and outlet. At the same time, you put a -20 AN inlet/outlet adapters on a clear plastic autozone fuel filter, its not going to indicate that the filter flows like a fire hydrant.

Thats diesel truck mentality lol. If you put a 12" wide stack in the bed of your truck then obviously your 3" exhaust is going to flow like a water main

 

The details of a conversation are everything. If something doesn't make sense please ask our tech team.

A 10 micron filter between the pump and injectors is required to provide reasonable protection in a fuel injection system. A larger filter element (with more surface area) is required to prevent pressure drop through the filter at high flow volumes. As more debris plugs the filter element the pressure drop increases across / flow decreases through the element.

Based on testing with our SS/magnetic filter elements we recommend our #12 filter housing for applications that require 500LPH or more. Given the small price difference between the two filter sizes the #12 housing is the better choice when space is not an issue.

Different manufacturers may have different specs and recommendations based on the design of their elements. Not all filters with the same micron rating perform the same.

Our #10 housing and element combo is currently $56.06.
Our #12 housing and element combo is currently $60.80.




We offer two types of mounting brackets:
Extruded bracket



Billet mounting bracket

 

Hi ALL, I too fit a -10 to -12 S/S 40 micron PRE-FILTER (LARGE CHAMBER) close to the pump. (element of 2" x 14")
The pump inlet requirement line diameter IS based on line flow (resistance) needed to STOP pump cavitation.

My OTHER REASON is the inertia of the fuel in the lines.

THINK : We leave the start line/turn with an often greater than a TWO Gravity increase in weight of the line fuel AWAY from the pump inlet.
THUS a "local" chamber that holds fuel, close to the pump, WILL reduce cavitation of the pump.

I have found a -4 return to the tank will work fine.
I have found the use of Annealed S/S tubing works fine @ $1.00 a foot.
I have found Versa Flair fittings work fine for fuel line use.

My "tech" is based on External Mounted pumps, with internal pump placement I use lift pumps with a "make-up" tank.

Lance

 

Useful info but most not applicable to this customer's specific application.
Tnx.