Turbo-Geist

I have a '99 so it requires a side mount design. The link you posted is for a top mount (2003-1/2 and later). Also, it's recommend to run a fuel pump speed controller with a single pump that large.

I haven't forgotten about this project, I've just been busy with a couple of other items and also hoped that RSI would release their v2.0 kit.

I have already bought the fittings and now just need to purchase the electrical, the pumps, and fabricate the fuel hat. I'm planning to run two pumps and activate one under boost via a hobbs switch.

Emuffinman1

Try Racetronix vendor LPA for a good set up. I ran a home made set-up with both pumps running continuously, and it did not work long term.

Turbo-Geist

I know exactly who you are recommending. Thanks for the recommendation, but their design is not something that I am interested in based on price and execution.

I have already mentioned that I will not be running both pumps continuously. One pump will be run just like I have been running it for the last three years and the other pump will only activate when manifold pressure is 3 psi or greater.

slow ride

I'm running either 2 255's or 1 255 and 1 400 walbro. The 400 walbro draws a decent amount of current, but should be ok since it's not continous and will activate off a hobbs. Grounding is to the plate and using both wires for power. I'm adding a -6 bulkhead fitting for the second pump.. Running the main pump on the stock line to the filter location and converting it to -6 AN which will keep the jet pump/check valve system working fine. Both lines join there with a Y block to -8AN, fuel lab filter then to the front of the car.

lpina650

I know this is an old thread but im interested in doing something like this. Are there any issues with deleting the fuel pump bucket?

slow ride

Fuel slosh could run the pump dry in a low tank/high g force situation. The factory bucket fights this as it is filled with return fuel which the pump pulls from the bucket and the bottom of the tank. Just be sure to run a decent about of fuel on hard runs and it's no big deal.

C U IN REARVEIW

I know this is a old thread....but about to do this type of setup. Any additional information available?

Turbo-Geist

This was for a 99 C5 that has the pump mounted horizontal so no need for dropping the tank. I did some initial 3D modeling and bought a few parts for mock-up but never went any further with it.

I ended up going with an external magnafuel 4303 mounted to the frame rail and a single 255 in-tank. For me, it was a much easier solution and has worked well up to 1100rw. I've never had to drop a fuel tank and hope to never need to unless it's to permanently remove them and install a fuel cell.

Rkreigh

the c5 fuel system seems to be a hassle, I've seen a few cars converted to fuel cells and that's quite a project too but maybe worth it!

I'm going e85 and need big flow to support 900 rw on corn so I'm thinking of the internal 450 plus a 4303 external

really like to run twin 450s internal in lieu of the external pump if it could keep up

I'm running 127 injectors and thinking 160 might be better

slow ride

I have done 1012 STD/ 972 uncorrected (manual car) with a 255hp/400 combo with a bit of room, but didn't want to push my luck with the ls6 block. I didn't use the 450 as it wasn't released back then. I also run FIClinic 1100's which are like the 127's from the other FIConnection. They are all based off the Bosch 040 extended tip injector. My setup is about done for sure though and we generally run e70-75 in Iowa which will take a bit less fuel.

One thing to note is I run dual fuel outlets on the hat so each pump has it's own flow path till they join at the factory filter location. The 255 runs through the stock line till the factory filter location to keep the transfer pump happy. I also grounded the plate so I could use both power and ground wires on the bulkhead for power (full time/hobbs). Keep in mind the pins on the plate are only rated at 14-15 amps continuous current and that is why I used the 255 pump as the full time rather than 2 400's, etc. You might get sway with more current, but over time or long drives it could burn a pin etc. Racetronics does sell extra wiring bulkheads if you want to mod the plate and add more wiring for extra current demand. I will probably do this in the future and switch to dual 450's when needed.

romandian

i see two bulkhead connectors on their site. what holds them in place?

Rkreigh

as you mention a relay or beefing up the wiring is great

my only concern on the magnafuel is fuel pumps that sound like a chain saw

the weldon pumps flow a ton but sound like a model airplane

I drive alot so intank or a quiet pump that flows a ton is what I need

the bosch pump as and external with a 450 intank might do it those pumps seem to perform at higher pressures for boost referrenced regulators on turbo cars