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In-tank pump on Gen I? #697094 02/16/06 12:07 AM
Joined: Jul 2004
Posts: 62
franklynberry Offline OP
Getting the Wheeling Fever
Anyone know if a [later?] "in tank" fuel pump from an EFI monty will fit an '88 gen I?

Just a wild shot.

<img src="/forums/images/graemlins/confused.gif" alt="" />--frankb


'88 SWB 5-speed Megasuirt MS-II V3 Starion TBI N/A 650/950cc Injectors 4Runner Alloys 275-70R16
Re: In-tank pump on Gen I? [Re: franklynberry] #697095 02/16/06 12:34 AM
Joined: Apr 2004
Posts: 2,700
grass13 Offline
Roll Me Over
hmmmm... how much later?


98' BBJ Grand Laredo 5.2 locked and loaded,.01' Gen III XLS. Frankenmonty lives on in another.
Re: In-tank pump on Gen I? [Re: grass13] #697096 02/16/06 03:53 PM
Joined: Jul 2004
Posts: 62
franklynberry Offline OP
Getting the Wheeling Fever
Quote
hmmmm... how much later?


"Late" Gen I, v6, 3.0?


'88 SWB 5-speed Megasuirt MS-II V3 Starion TBI N/A 650/950cc Injectors 4Runner Alloys 275-70R16
Re: In-tank pump on Gen I? [Re: franklynberry] #697097 02/16/06 05:44 PM
Joined: Jan 2001
Posts: 13,649
fasteddy Offline
Web Wheeler
*****
Define "fit". I think you could use one as an external pump with some fittings added, or you could modify the top-of-tank efi pickup tank flange and tubing to fit the front/top flange hole in the 4 banger tank, which would require some very careful tube bending and perhaps length modification to the tubes with VERY careful rewelding, probably tig, but mig way work, as may soldering if you can find a plumbing sleeve coupling to fit the tube.

Why go to all this trouble? A Master E8000 aftermarket pump is about $80, and delivers enough fuel for almost 300hp. Simple hose connections (I use double hose clamps on the pressure side, with a barbed nipple on the pump and a fabricated clamp holding bulge on the end of the truck hard lines. I usually make the bulge by just starting a bubble flare, or by clamping the line in a flaring tool clamp side and carefully bash the end with a hammer until it bubbles slightly, then I ream out the hole to orig. diam. I mounted the pump to the tubular crossmember just above the rear axle, handy to the gauge/pickup flange. Using the stock flange means you don't have to fiddle with possible differences in sender resistance range and pickup location.

I first used the stock top of tank starion pump, but it blew apart one day on the road (I suspect an overdose of carb cleaner and acetone run thru the tank in an effort to get rid of the dead fuel varnish ate the adhesive that held the pump body in the case), and I had to wire it together to get home, but it worked just fine clamped to a frame rail before that, but the plumbing was a kluge.

I use a stainless steel coil spring inside the suction hose to the pump from the tank to keep it from collapsing under pump suction. Stiffer hose would solve this (like a/t cooler line), but the spring works just fine and I had the spring on the workbench at the time. I mounted the stock starion fuel filter on the dr. side fender hump, handy to the throttle body and the engine end of the fuel line.

If you are planning on this for a carb motor, the pressure will be very excessive unless you use a pressure regulator with a fuel return line.


Not responsible for advice not taken...
Re: In-tank pump on Gen I? [Re: franklynberry] #697098 02/16/06 07:34 PM
Joined: Dec 2004
Posts: 5,231
CapnCrunch Offline
Trail Leader
***
I added an external (just forward of the tank) aftermarket electric fuel pump to my '88 about a year and a half ago. Was about $70 or so from Pep Boys. I still have the mechanical pump as well (left in for simplicity). The main reason I added the electric pump was to address vapor-lock at high altitude. Worked like a charm...haven't been vapor-locked since.


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()_)()_)-----)_)

Stay the Trail!

Re: In-tank pump on Gen I? [Re: CapnCrunch] #697099 02/16/06 09:22 PM
Joined: Sep 2001
Posts: 8,557
LandRaider Offline
Forum Moderator
*****

Quote
I added an external (just forward of the tank) aftermarket electric fuel pump to my '88 about a year and a half ago. Was about $70 or so from Pep Boys. I still have the mechanical pump as well (left in for simplicity). The main reason I added the electric pump was to address vapor-lock at high altitude. Worked like a charm...haven't been vapor-locked since.


We're talking about high pressure EFI pumps. <img src="/forums/images/graemlins/wink.gif" alt="" />

I lost the pictures I had of my setup. E8374 Master fuel pump 90 PSI, and get the pump holder off of a Nissan / datsun Z car from the junkyard.


87 Raider 4D56td v5MT1
31's..Basically Stock
Re: In-tank pump on Gen I? [Re: LandRaider] #697100 02/17/06 05:47 AM
Joined: Jan 2001
Posts: 13,649
fasteddy Offline
Web Wheeler
*****
I wrapped the tube crossmember in rubber mat (shade tree sound isolation/dampening) and used two big hose clamps to hold the pump on the frame. The Master LR used is the upgrade over the E8000. I have one for the next incarnation since I'm upping the fuel flow, but the E8000 worked fine for the std. starion setup, with a comfortable cushion.


Not responsible for advice not taken...







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