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corax · 05-06-2008, 08:17 PM

Another project presented itself when I found a Northwest Metal Products auxiliary gas tank on ebay for $170. These retail for $600 + shipping when new, so this was too good of a deal to pass up. It mounts above the spare tire and adds another 14 gallons of gas to the truck. Incidently the spare tire will sit ~ 4inches lower than stock, so until I plan and build a swing out tire carrier I'll have to be careful not to drop the rear end off a ledge

CARB legal, but not California legal (?!?) - so install will have to wait till I pass at the Smog Referee Station

The exterior of it was completely rusted, however the interior looked nice and clean (the only rust inside was where the side mounts were welded and the galvanizing was burned off). I was too excited to get started to take a before pic, but this is after I was done prepping the outside.

I got all the rust off first with a wire cup brush mounted onto my 4" grinder. When it was clean enough I painted the outside with POR-15, which is my favorite rust killer. After letting it bake in the rear of my truck with the windows closed for a week (90+ degrees outside), I layed on 3 coats of spray truck bed coating and put it in the back again to "cure" for a week in the So Cal heat.

This is supposed to be a gravity feed system supplying the main tank through a fitting screwed into the main tank drain plug. However, I don't like the idea of having a fitting on the bottom of the main tank - the main tank is already low enough & I don't want to worry about hitting a rock and draining both tanks. So my plan is to use a cheap gas pump to transfer fuel from the aux tank to the main tank through the filler neck vent hose. The only downside to this set-up will be that I have to remember to turn off the pump when the aux tank is empty or I risk burning up the transfer pump which is not designed to run dry.

05-06-2008, 08:17 PM	#5 (permalink)
corax Registered User Join Date: Aug 2007 Location: eastern PA Posts: 632	Another project presented itself when I found a Northwest Metal Products auxiliary gas tank on ebay for $170. These retail for $600 + shipping when new, so this was too good of a deal to pass up. It mounts above the spare tire and adds another 14 gallons of gas to the truck. Incidently the spare tire will sit ~ 4inches lower than stock, so until I plan and build a swing out tire carrier I'll have to be careful not to drop the rear end off a ledge CARB legal, but not California legal (?!?) - so install will have to wait till I pass at the Smog Referee Station The exterior of it was completely rusted, however the interior looked nice and clean (the only rust inside was where the side mounts were welded and the galvanizing was burned off). I was too excited to get started to take a before pic, but this is after I was done prepping the outside. I got all the rust off first with a wire cup brush mounted onto my 4" grinder. When it was clean enough I painted the outside with POR-15, which is my favorite rust killer. After letting it bake in the rear of my truck with the windows closed for a week (90+ degrees outside), I layed on 3 coats of spray truck bed coating and put it in the back again to "cure" for a week in the So Cal heat. This is supposed to be a gravity feed system supplying the main tank through a fitting screwed into the main tank drain plug. However, I don't like the idea of having a fitting on the bottom of the main tank - the main tank is already low enough & I don't want to worry about hitting a rock and draining both tanks. So my plan is to use a cheap gas pump to transfer fuel from the aux tank to the main tank through the filler neck vent hose. The only downside to this set-up will be that I have to remember to turn off the pump when the aux tank is empty or I risk burning up the transfer pump which is not designed to run dry. __________________ -Keith- kb3scj '88 4runner SR5 - 3.0 7MGE eng swap - Marlin HD W56 - 4.56 V6 Thirds - '82 Toyota Celica Supra LSD up front - 33x10.5 BFG KM2's - NWMP Aux Gas Tank - home fab front and rear bumpers - Hannemann fenders - OME Dakar rear springs w/ Bilstein 5150 reservoir shocks Garage Thread "Speed doesn't kill, suddenly becoming stationary does." - Richard Hammond Last edited by corax; 11-27-2008 at 07:16 AM.