LS376 questions?

[Ruth]

Jay,
the surge tank overflow is routed back to the main fuel tank completing the loop....the vent/return should be of a smaller size tube to create a little back pressure in the surge tank to maintain its "full" status...

I've been out of touch for a while. . . darn job. . . . so this conversation is new to me, as is the topic of swirl pots/surge tanks. Googling around helped me understand the basic concept. As I read it, the swirl pot is necessary because the fuel pump on these cars isn't inside the tank like on production cars, and gives some protection against starving the engine of fuel.

So, jay cozz described the routing as:

fuel tank>filter>fuel pump (bosch)>surge tank>high pressure pump (walbro) >filter>motor

My questions are. . . does the RCR provided tank come with all the "ports" for all this plumbing on it, and does the RCR package include the swirl pot?

Regards,

Ruth

 

[Fran Hall RCR]

Ruth...

the surge tank is not included...requiring a surge tank is not solely due to the fuel pump not being located in the main tank.
Many race fuel cells have surge tanks built into the inside of the main tank and then run an internal pump...but the surge tank is stil required due to the high G cornering loads and the fuel pulling away from the pick up.
I prefer external pumps for ease of maintainance and more choices of flow rate and pressure requirements.

 

[Ruth]

Thanks Fran. Do you have a swirl pot brand/part for reference so I can look it up and understand it better? Do builders need to do anything to the RCR fuel tank to plumb in the swirl pot, or are all the inlets/outlets/ports already welded in?

 

[Fran Hall RCR]

All fitting are installed in the fuel tank....just plumb the surge tank as required.

I am not aware of an off the shelf unit as we have made them on request from anyone wanting one...

I think Cam may have purchassed one online somewhere...but here's one
cxracing.com: Aluminum Fuel Surge Tank RX7 S13 Civic Mustang Eclipse

 

[Ruth]

So the surge tank is basically always full, and ensures that the last pump before the engine always has something from which to supply the engine. Do I have that right?

Wait. . . I think I answered my own question.

Google led me to this link: http://www.ratdat.com/?p=168

 

[Fran Hall RCR]

yes you did.....