Changing to 4.0L drivetrain : In tank pump or inline?

[Nightpath]

Howdy all,

Some time this summer I'll be changing my engine from the 4.2 to a 4.0, with the transmission and t-case (w00t).

Anyways, I've been debating modifying the 4.0 pump to fit into the Eagle tank, or just using a inline fuel pump. To me, the inline fuel pump mounted underneath is the best bet. If it goes bad I can easily replace it without dropping the tank, which in the winter here in Canada is a real bag of dicks.

Either way, I have to buy a pump.

Anyone have any suggestions? Or experience in this?

[eaglefreek]

My V8 Eagle has an inline pump. It does an ok job until I get to about 1/4 tank. It will starve when taking off fast or making a left turn. I thought about installing a surge tank. Basically, it's a smaller tank that is fed by a  low pressure pump and then the high psi pump pulls from the surge tank. http://www.superstreetonline.com/project_car/ssts_1119_building_a_fuel_surge_tank/ I know a couple people that have installed tehm in SX4 tanks, but I think they are a different shape than the wagon. The wagon tank has a wedge shape in the front that might make it difficult to install an intank pump.

[DaemonForce]

Chiming in to vote for inline pump. There is just too much about this car that centralized everything in the worst spots. You do not want to go through the trouble of draining, tank straps, dropping the tank and so on whenever you have fuel pump issues. Might as well get the sending unit issues out of the way while you're there though.

[carnuck]

In my wagon I plan to stick the XJ tank with pump in and add a new fill hole to the tank with that part from an Eagle tank and cap off the old one. We did a test fit with the rear frame from the wagon we parted.

[BenM]

In tank pump, because you should drop the tank and inspect it anyway. Also, most inline pumps are impeller pumps and not good at drawing but are good at pressurizing, which is why they're placed in the tank.

Mechanical pumps do a good job of drawing fuel up as long as they don't have to lift too far (over 30 feet). They do make electric pumps designed for positive displacement, you just have to look specifically for them.

[carnuck]

In tank pump is cooled by the liquid gasoline too. I won't need a pump when I go LPG because I run a vapor system until I can afford LPG-EFI which will be a special tank with built in pump.

[Nightpath]

They cost about the same anyways don't they?

[eaglefreek]

Yes they are usually about the same price, depending on which pump you choose. There are some real expensive ones that include a baffle. An intank is usually a better option than an inline, however it may be difficult to install one in an Eagle tank. With an intank pump, you should have some type of baffling to keep the fuel from sloshing past the pickup. 
http://www.tanksinc.com/index.cfm/page/ptype=product/product_id=84/mode=prod/prd84.htm

[Draekon]

Yes they are usually about the same price, depending on which pump you choose. There are some real expensive ones that include a baffle. An intank is usually a better option than an inline, however it may be difficult to install one in an Eagle tank. With an intank pump, you should have some type of baffling to keep the fuel from sloshing past the pickup. 
http://www.tanksinc.com/index.cfm/page/ptype=product/product_id=84/mode=prod/prd84.htm

Sloshing is just as much of a problem with an in-line pump as it is with an in-tank pump.  Inline pumps dont like sucking any air

[Nightpath]

I won't be doing any crazy stuff with the car. Highway driving and back and forth to work. Possibly a bit of dirt road cruising.

So the benefit of modifying the XJ pump to fit the Eagle tank would be that the fuel keeps the pump cool right? And it grabs the gas to send better?

I would think that an inline pump would accommodate for temperature.

[carnuck]

Inline pumps burn out more often than in tank ones do *except Chev pumps*

[Nightpath]

Is there a Chevy inline that would work?

[eaglefreek]

I think he is inferring that Chevy intank pumps burn out more frequent than others.

[Nightpath]

Lol. chevy crap.

[carnuck]

Lol.  chevy = crap.

FIFY