sc300 triple pump in-tank installation
#17
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Join Date: Mar 2007
Location: ny
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nice write up.
I got one question. how did you make connections for the wires to go through the cap??
http://i274.photobucket.com/albums/j...ccessplate.jpg
I got one question. how did you make connections for the wires to go through the cap??
http://i274.photobucket.com/albums/j...ccessplate.jpg
#18
Lead Lap
Thread Starter
i'm curious as to why you didn't use a 3-way "Y" in the tank, instead of running one pump separately and Y'ing it in up in the engine bay...
i understand the concept of over-running the rail so your fuel pressure isn't controllable at low load, but you could still run one pump 99% of the time (and the other two as a PWM output) and have it feed all through the same -8 line, correct? it seems to me like you're just adding extra fuel line and an additional "Y" when it's not necessary.
(i'm not hating here, just curious -- maybe i'm missing something)
i understand the concept of over-running the rail so your fuel pressure isn't controllable at low load, but you could still run one pump 99% of the time (and the other two as a PWM output) and have it feed all through the same -8 line, correct? it seems to me like you're just adding extra fuel line and an additional "Y" when it's not necessary.
(i'm not hating here, just curious -- maybe i'm missing something)
Simply, the hassle of adding a -10 line out of the tank and trying to cram a triple Y-block (with fittings and lines) through the access hole just wasn't worth it, IMO. You're correct, though; had it worked, I could've easily staged the second and third pumps with one running all the time.
Unfortunately, I just didn't feel like deleting the existing line, and I already had a 2-to-1 Y-block with fittings I knew would fit through the tank access hole. So, I decided to use what was there and limit the re-work as much as possible.
Thanks,
-scott
Last edited by motorheaddown; 01-17-12 at 01:52 PM.
#19
Lead Lap
Thread Starter
Thanks,
-scott
Last edited by motorheaddown; 01-17-12 at 01:53 PM.
#20
Lexus Test Driver
iTrader: (2)
I already have one aeromotive stealth 340 intank pump to install for my fuel setup but I'm considering just going ahead and doing a twin intank setup with a 2nd aeromotive 340. How much power do you think twin 340's will support power wise? Also what would be the easiest way to plumb the fuel lines for twin intanks? Could I just feed them both through the stock feed and then do a Y adapter in the engine bay to feed both sides of the rail? Or would I need to do a -8 an feed from the tank to the rail. Or 2 -6an lines feeding each side of the rail independent of each other?
#21
Lead Lap
Thread Starter
I already have one aeromotive stealth 340 intank pump to install for my fuel setup but I'm considering just going ahead and doing a twin intank setup with a 2nd aeromotive 340. How much power do you think twin 340's will support power wise? Also what would be the easiest way to plumb the fuel lines for twin intanks? Could I just feed them both through the stock feed and then do a Y adapter in the engine bay to feed both sides of the rail? Or would I need to do a -8 an feed from the tank to the rail. Or 2 -6an lines feeding each side of the rail independent of each other?
As far as plumbing goes, I'd either add another 6AN line and use it with the stock feed line. Or, plug the stock line and install an 8AN.
The stock return will work just fine.
-scott
#22
Super Moderator
iTrader: (34)
You might be able to eek out 1000whp on two assuming you have a good flowing power plant (i.e. head, turbo, IC piping, and exhaust), but that'll be pushing it. Your fuel system would have to work perfectly to ensure any margin.
As far as plumbing goes, I'd either add another 6AN line and use it with the stock feed line. Or, plug the stock line and install an 8AN.
The stock return will work just fine.
-scott
As far as plumbing goes, I'd either add another 6AN line and use it with the stock feed line. Or, plug the stock line and install an 8AN.
The stock return will work just fine.
-scott
#23
Lexus Test Driver
iTrader: (2)
You might be able to eek out 1000whp on two assuming you have a good flowing power plant (i.e. head, turbo, IC piping, and exhaust), but that'll be pushing it. Your fuel system would have to work perfectly to ensure any margin.
As far as plumbing goes, I'd either add another 6AN line and use it with the stock feed line. Or, plug the stock line and install an 8AN.
The stock return will work just fine.
-scott
As far as plumbing goes, I'd either add another 6AN line and use it with the stock feed line. Or, plug the stock line and install an 8AN.
The stock return will work just fine.
-scott
#25
Lead Lap
Thread Starter
FWIW, I use JB Weld as an insulator for the 12V pass-throughs. Just create a hole with a stand-off through the tank lid, fill it with JB Weld, and then drill/tap a 1 1/2" or 2" bolt through it. Obviously, the bolt heads have been cut off to allow nuts on both sides of the post to attach the wires.
-scott
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