Grooup
have a 64 galaxie wagon that I want to do efi on.
ive done the swap with efi before by using external ppumps but would like to find a way to add an internal pump in tank.. Anyone?
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Grooup
have a 64 galaxie wagon that I want to do efi on.
ive done the swap with efi before by using external ppumps but would like to find a way to add an internal pump in tank.. Anyone?
The easiest way to do that would be to retrofit a later sender that has a larger enough opening to fit the float and fuel pump through.
Another way would be to find a pump that will will fit through the existing opening and mount it somehow in the tank.
There's no real best of one way to do this, there's only how you will do it.
Personally while I like the idea of keeping the pump cool by being submerged in fuel, I would just use an external pump and be done with it. I've done it both ways, retrofitted and internal pump and used externals and the effort wasn't worth it in the end IMO to go to an in tank pump.
It's typically done these days using a factory fuel pump canister. Some of the GM ones are round with a big O-ring so you just come up with some way to hold it down against the tank to seal. The cool part of these newer systems is that there is a siphon pump in the canister that keeps it full all the time even when the tank is almost empty. Here is an example of this kind of install.
http://www.britishv8.org/Articles/EF...-Tank-Mods.htm
There is also kits like this. Pricy at about $500 and I'm not too convinced of the ability for it to work down to a near empty tank.
http://aeromotiveinc.com/products-pa...h-fuel-system/
I kept looking at this stuff with my Impala but the tank was about 3.5" deep so it would require an extension sump to get enough depth to fit a pump canister. I finally gave up the idea of an in-tank pump and just welded a sump onto the tank. It works great.
Or a really cool way...
http://www.gearhead-efi.com/gm-ecm-p...onversion.html
Quote:
Originally Posted by EagleMark
Thanks all ill look into it.. Looks like I need to go hunting for some Chevy pumps and tank.
just how to you braze the stuff in ?. I have a mig welder but the articles mention brazing the one and bolting the other
Welding a flange onto the older tank should not be too hard. The older tank will be thicker and easier to weld to than a newer tank. As long as you empty the tank, and make sure there is no fuel puddled in it anywhere (rinse good with water), then blow it out with shopvac, or compressed air for a few minutes, it should be fine. The idea is to get all of the fumes out. I tig welded one into '78 280Z tank and it wasn't too difficult. Some very small vice grips make things easier. Like these:
http://www.harborfreight.com/6-inch-...ers-39534.html
Nevermind, see it was suggested already.
Nice write up in Engine Swaps magazine, by car craft, on stands now.
http://aeromotiveinc.com/2012/11/phantom-fuel-system/
$451. ??? :laugh:
http://www.jegs.com/i/Aeromotive/027...63#moreDetails
Actually that is not a bad price when building a car. But that link above from Gregs writup is more work and easily under $100.
Not anywhere close to under $100 if you're buying a new fuel module....
I can pickup the tank and pump from a cavalier or sunfire for $40 from the local upulit yard.
Is one year better then others?
I would say go for a '99.
I know I am a little late to this thread, but have you searched around for a complete late model gas tank from other vehicles that might swap in?
On my 79 fullsize cherokee, I took some measurements of the empty area behind the rear axle and went to the junkyard. I found a tank from a late model (I think 97-98) XJ cherokee fit almost perfectly. I measured out a skid plate for it (since I need it for offroad) and used that to mount it. I used existing hols in the rear frame crossmember and then used a peice of 1x1, 1/4wall square tubing and mounted that to the frame for the front.
Now I have a late model plastic tank with a built in efi pump. I found a aftermarket gauge that was super close to the ohm readings for the sender.
This allowed me to remove my long and crappy factory tank that ran down the drivers side frame rail. I hated running out of gas every time I hit the brakes when I was below 1/4 tank...lol (long coffin tank with the pickup at the rear)