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I believe most of that is false advertising. The 450 pumps the fuel through the motor where it contacts the windings. The turbine style 450 does not isolate the motor from the "pump". No way around that. Walbro states all pump components have been validated to OEM specifications for approved use in flex fuel applications. That doesn't mean they are "ethanol proof".
I'm not saying the pump will eat itself in short order if the ethanol contacts the windings. It may take a very long time. And I'm sure some pumps are worse off than others. Or have other components that are not ethanol approved. My 4303 pumps the fuel through the motor and it's been going strong 4 years...and I bought it used. Recently sent it in just to be checked out and they said it looked great. Threw in new brushes and I'm hoping it continues to perform well for several more years.
That said, you'd need to look into mechanical pumps or something like the 4103 magnafuel for a truly compatible pump IMO.
I wonder what the GTR guys are using ? Certainly in the UK, most of the quicker ones are using race E85 from VP or Sunoco etc.
Or would the race versions maybe be less nasty ?
To my knowledge there is not a difference in fuels just consistency of %. There are a few pumps but omega makes a brushless in tank that is suppose to be good for 1500hp
I'm bumping this up because I'm about to install a fuel system in my vette.
The stock tank isn't going to work. It would need disassembled, cleaned, all new seals/fittings, etc. The car has been sitting in a yard for 4 years uncovered.
I already have a 10-gallon fuel cell, so an external pump seems like a no-brainer.
I was wondering if anyone has tried this pump with E85 yet. I'm not going to be running E85 all of the time, but it is getting a flex fuel setup so ethanol content will always vary.
I'm bumping this up because I'm about to install a fuel system in my vette.
The stock tank isn't going to work. It would need disassembled, cleaned, all new seals/fittings, etc. The car has been sitting in a yard for 4 years uncovered.
I already have a 10-gallon fuel cell, so an external pump seems like a no-brainer.
I was wondering if anyone has tried this pump with E85 yet. I'm not going to be running E85 all of the time, but it is getting a flex fuel setup so ethanol content will always vary.
I believe yenkomike just dipped into the 9's with a single aem 380 on e85.
I actually bought a pair of them a few days ago....still not sure why lol
I know my 044's struggle to keep up, so decided I'd give these a go as it's a little easier than adding a 3rd pump. If the do flow more it will be easy to see. But I wont be fitting them til over the winter, and no chance of me ever using E85.
Just a anecdotal experience, but I used to have to fight all kinds of corrosion problems on circle track cars, Sprints and Midgets... I started using a additive called Uplon from these guys -> http://www.klotzlube.com and it really was amazing compared to running straight methanol. It acts kind of like Stabil for gas engines. Keeps the fuel from absorbing as much moisture and lubes the pump and injection components.
The methanol EATS aluminum if you let it sit, so on a sprint or midget we had to go through this process of clearing the fuel injection system and backfilling it with light oil. If we even let the car sit overnight it would get alky crystals in the Mechanical injection lines and control valve. With the lube I could at least let the car sit through the weekend and have no issues. I still backed out the alcohol for when we were storing the car for more than a week, but this stuff really made it less work!. Some friends of mine running E100 cars also tried it and were pretty happy with the results.. A lot of the guys I hang with locally use it in their sprint cars and have nothing but good things to say about it.
FWIW - i'm just a happy customer, no interest in the company or product...
the aem pump is a good pump . I think I'm about at the limit of it. I'm going to try it one more track day with just the single 380 aem inline pump. but it has taken me 6.40 @110 mph 1/8 and 9.90 @136 on e85 , at 3600 lb race weight. 80# injectors with 55 psi base pressure.
I'm going to check my filters and give it some more fuel and see if it can still keep up.
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