I'm going to finally make the switch to corn, and I normally prefer to do things correctly once rather than to make a slight upgrade, then have to get all new parts when I shoot for more power etc. Right now, I have a stock block with ARP studs and Kelford 272s and BBK-Full running cut 93/100 octane for road racing.

I've seen a lot of various setups for E85, with people running modded Walbro 255s, DW300, Aeromotive in-tank pumps, and the seemingly ubiquitous Buschur double pumper.

I'm leaning towards FIC 1450cc injectors, but I'm not sure what fuel pump, FPR, etc would be best for a time attack build. Given that my car sees extreme lateral g's, will eventually have a built 2.3L motor, and will be running E85 99% of the time... what are the recommended setups for the fuel system. I'm not looking for the cheapest option, but the overall best choice I won't have to upgrade when I build the motor. The car will be getting some exhaust modifications, and going to speed density when I retune for E85 as well.

My tuner is considering an external Aeromotive A1000 pump with a custom swirl pot like he runs in his time attack car. The only downside really is the volume of the pump which he describes as a loud "coffee grinder". Is this overkill? (is there such a thing?)

 

i would go with a surge tank for sure. pump is up to you, im going with dual 044's.

 

Weldon 2025 is hands down the best pump, only downside is the price.

 

Seems like that is um... a bit overkill in terms of flow. I would rather get something that supports less flow, and invest the rest of the money in the fuel system into a surge tank setup etc. I highly doubt I will ever shoot for more than ~600 whp even when I build the motor, because anything beyond that starts sacrificing a lot in terms of spool for a road race car.

 

go with the dual walbro's, you'll hate the coffee grinder sound. its obnoxious to say the least, and it sucks for ANY street use

 

The double pump set up from buschur is the simple, effective answer. The factory lines draw from both sides of the tank so it's unlikely you'll have a starvation issue. Mine is a much more complex setup (three pumps, surge tank, lines, rail, FPR, 1450's) and sometimes I contemplate swapping it all for a double pumper.

 

Why does a double pumper suck for street use? You can have one running at all times and then the other comes on only when needed BTW.

I would say that is the way to go. Then you don't have to switch out the fpr. I went with the de pumpbecause I didn't want to mod much, but it looks like I'm going to have to get a fpr because I retired it as well.


-josh

 

I think he was saying the double pumper is good for street use, while a big external pump like the Aeromotive and Weldon are horrible for street use because they are so loud.

 

If it was mine, I would just install one of the intank three double pumper kits currently being marketed for Evos[ 1)BR, 2)BlaqOps, or 3)Full Blown, in no particular order of preference] and call it a day.

 

Thats not how the tank works. The pump(s) suck from just one side of the tank.

 

You just had me digging around the web to confirm that. When I was asking similar questions I was told it drew from both. Good to know.

 

Yeah, thats why AMS sells this: http://www.amsperformance.com/cart/A...nk-System.html

 

The single inline Wally delivery pump used in the linked AMS system might not be able to adequately feed the OP's E85 fuel requirements given his 600WHP goal. There would still only be a single inline Wally feeding the rail.

Although there is a second Wally in the kit, that second pump only serves as a transfer pump transferring fuel to a reservoir tank from which the inline pump then delivers fuel to the rail.

This system addresses the issue of fuel starvation under high G cornering and braking forces. However fuel volume to the rail would still only be supplied by a single Wally. In fact, that inline single in the AMS kit works harder than a stock location in tank pump as it has to draw and lift the fuel before sending it forward to the rail. So, it does double duty.

The AMS system might deliver enough fuel for pump or race gas requirements, but it won't increase fuel delivery volume over the stock setup and thus it probably won't cut it for an E85 race tune over 500 WHP.

 

Right, I just meant in response to the "both sides of the tank" discussion. AMS sells their surge tank solution because the factory system can experience fuel starvation because it pulls from only one side.

I'm leaning towards FIC 1450cc BlueMax injectors and Buschur double pumper setup, but I'm trying to hear from more guys doing time attack builds. I know the double pumper is fine for street/drag applications, but for extreme lateral g's I dunno.

 

Yes, I hope that someone with actual EvoT/A experience does chime in. I am curious to find out as well.