Im considering doing this. The Supra community really benefits well from this mod and Im sure we can as well. Im really trying to decide if I want to go through all the trouble of doing a sump and inline and spending more money on larger feed lines----currently they are -6 feed and return.
I was trying to search through on how difficult the job would be since Ive never done them but couldnt come up with anything.
I think twin intank walbro 255hp's would easily and safely be able to support well over 600 whp since everyone says that a single walbro with stock lines will go to 600 but thats pretty much pushing it. Im not planning on making over 600, but I think that the larger fuel volume of the -6 line would definetly decrease its ability to flow the needed volume at the same pressure.

Any ideas on how to go about doing this? I have a couple of the tank covers to practice on but a how-to would be great.

 

I think its a cool idea and someone should try it.

 

Why not just run one walboro intank pump and run an inline fuel pump?

 

Most of my RX-7 friends do this but the opening and carrier on the RX-7 (and Supra) is more forgiving than the Honda unit.

 

Yeah, I know the honda tank opening isnt that big, but theres gotta be a way to squeeze them in there. Even if they have to be staggered with one on top of the other.
I will try this week hopefully. If I am successful then you guys can bet I will put together a good how-to on it!

 

Our local tuner (in sig) runs twin 255's in either his 600whp civic, or his 700whp Talon. He said it works just fine. I'm thiking it's the Talon though because it runs 1600cc injectors..