just a bit of intank fuel pump info

[grumpyvette]

Heres just a bit of in tank EFI fuel pump info
ANY TIME YOU SUSPECT FUEL INJECTOR OR FUEL SYSTEM RELATED ISSUES ,A REASONABLE START POINT IS TO USE A GOOD QUALITY FUEL INJECTION CLEANER ADDITIVE IN THE FUEL TANK AND SWAP TO A NEW FUEL FILTER
http://www.bgprod.com/catalog/gasoline- ... m-cleaner/
http://www.bgprod.com/catalog/gasoline- ... m-cleaner/
http://www.boydwelding.com/?gclid=CIuGs ... 7Aod-BAANg
http://www.summitracing.com/parts/edl-3 ... /chevrolet
http://www.atlinc.com/racing.html

http://static.summitracing.com/global/i ... l-3581.pdf

viewtopic.php?f=55&t=211&p=31720#p31720

VERY INTERESTING ADDITION TO THE POTENTIAL FUEL SYSTEM DESIGN
http://www.motoiq.com/MagazineArticles/ ... rvoir.aspx
http://www.highflowfuel.com/i-10388...rainers.html?gclid=COabwduFgs0CFZKGaQodbGQCOw

450 LPH EFI FUEL PUMP
you might want to keep in mind EFI fuel systems and pumps generally use IN THE TANK FUEL PUMPS, that relies on constant fuel slosh to reduce and absorb heat the pump generates, and a return style fuel pressure regulator and fuel lines , with routing that allows a constant flow of fuel running thru the fuel pump to absorb and reduce heat build up.in tank electric fuel pumps REQUIRE sloshing fuel and a constant fuel flow to absorb heat that degrades the internal parts if they are not kept cool, youll find maintaining at least a 1/2 full tank aids pump durability, many drag racers minimize the fuel load to save weight, this can be detrimental to the pump cooling, your better off running a smaller capacity fuel cell and keeping the pump immersed in cooling fuel any significant restriction to fuel flow on the suction side of the pump reduces cooling and durability as these style pumps push fuel far more effectively than they suck or draw fuel., if you have a bunch of sand, rust flakes or varnish from old fuel clogging the per-screen fuel sock filter the pump can overheat
Fuel Pump

these fuel pumps REQUIRE you to keep about 1/4-1/3 of the fuel tank full so sloshing fuel , and consistent fuel flow, thru the pump,can keep the fuel pump cool.
injectors operate at much higher pressure levels ans the pumps tend to build heat faster than the lower pressure pumps used with carburetors, and injectors are far more likely to foul or partly clog with old fuel, so use of both MARVEL MYSTERY OIL and a good fuel stabilizer and probably some injector cleaner plus frequent fuel filter changes are mandatory for cars that are not used frequently for at least a few hours a week.
If you constantly run less than 1/4 tank of fuel the lack of cooling significantly reduces the electronic fuel pumps durability and expected life span.
I,ve seen several cars that were put in storage for several years that had only enough fuel put in the tanks to allow them to be fired up and run intermittently that were constantly requiring fuel pumps to be replaced, the combo of old fuel that might contain moisture or degraded additives and lack of cooling is hard on pumps

READ THESE LINKS AND SUB LINKS, theres a ton of related info in the links below
READ THIS
http://autolabscopediagnostics.com/fuelpump.htm


http://www.diamondmarine.com/web_pages/ ... System.htm

viewtopic.php?f=32&t=33

viewtopic.php?f=55&t=1939&p=5137#p5137

viewtopic.php?f=32&t=67&p=83&hilit=fuel+filter#p83

viewtopic.php?f=55&t=211&p=247&hilit=fuel+filter#p247

viewtopic.php?f=55&t=733&p=1614&hilit=fuel+cell#p1614

viewtopic.php?f=55&t=350&p=429&hilit=fuel+filter#p429

viewtopic.php?f=32&t=596&p=793&hilit=fuel+filter#p793

viewtopic.php?f=80&t=1470&p=3304&hilit=corvette+fuel+filter#p3304

viewtopic.php?f=55&t=635&p=849&hilit=fuel+filter#p849

viewtopic.php?f=80&t=728&p=1243&hilit=fuel+filter#p1243

 

[bytor]

Good timing on this post grumpy. I have done some research myself on in tank pumps as well. I’m looking at an EFI setup and the in tank pump makes the most since. The pump stays cool and you don’t have to worry about lack of suction with top feed tanks.

I'm not up for a custom build like these guys but there's some good info here.
http://forums.corvetteforum.com/c3-...fying-fuel-tank-for-in-tank-pump-for-efi.html

Towards the end of this thread, one guy actually used a 1990 Ford Bronco in tank setup in his 68 vette. Interesting but I have a hard time sticking a Ford part on the vette.

So, I’m looking at getting an aftermarket 1982 Corvette sending unit without the pump for my 78 vette.



and installing a high pressure pump then drop it in my tank.
http://www.highflowfuel.com/i-4783585-hfp-255lph-fuel-pump-chevrolet-corvette-1985-1996.html

The only modifications I would need to make are adding a larger return because the existing ¼ inch won’t work. And, I would like to add some kind of can or tray to control the slosh when the fuel level is low. Something like this,



a late model Camaro sending unit has a plastic can around the pump to control slosh.

This is a sweet setup as well but $$$ http://aeromotiveinc.com/2010/08/corvette-stealth-system/