It's my understanding that the 2nd Gen 4Runner came with 2 available gas tank sizes. One around 17.5 gallons... one closer to 19.5 gallons.

If this is true, does anyone know if one can swap a 19.5 into a 17.5 OEM vehicle?

Also... any "easy" way to tell if a 4Runner has a 19.5 tank? Serial or model number maybe? Stamp or marking on tank itself?

It might not be worth the effort for an extra 2 gallons and I may just look into adding a aux tank where the spare used to be.

 

i haven't heard of or seen a different tank size other than the 17.5 gallons. as far as i know you would just have to put an aux. tank when the spare normally sits. i think the Diesels where smaller fuel tanks but you can't use those anyway.

 

I thought it was the same for all the 4runners. The pickups have 2 different sizes

 

I think manual tranny rigs had the smaller tank and autos had the larger so they would have equivalent range despite the worse gas mileage.

But here's the thing Elvota - you wheel your truck pretty hard. Why in to world would you want an even bigger rock magnet down there? Put a tank where the spare used to be, have a nice smooth skid over it and call it good.

 

Maybe it was the pick-ups with 2 different sizes.

TC, I agree about the rock magnet part. Wasn't sure where the bigger tank gained the extra volume. My hope was towards the axle, so I wouldn't loose anymore clearance.

But I think the aux or a single 20 gallon tank is most likely the best way to go. I found a website a while back that had the dimensions of all the OEM replacement tanks they offered. Anyone know of such a site? I want to do this with a low budget so custom tanks are out of the question.

Looking for a tank that will fit where the spare was, won't hang down to much and can carry at least 10 gallons for a aux, or 20 gallons for a replacement.

 

http://www.downeyoff-road.com/BodyCo...iaryTanks.html

I hear a Cherokee tank fits back there too.

 

i have a 93 4runner and i only have a 14 gallon tank

 

i have a 95 auto with a 17 ish gallon tank

 

An older Ford pick up tank fits back where the spare used to be, but requires some mods to the crossbracing in the frame and a new crossbrace has to be added to the rear. It would get some added range though, I think it's 19.5gal., and the tank does not hang down at all. I saw the mod somewhere on a build-up thread here (philsrunner?) looks sweet for wheeling. Definately smooth and hang-up free.

Chris

 

My tank is smashed, it holds about 16 topped off.
Sorry, look up fills runner, he did a tank swap, seemed simple.

 

uhh not unless you've had quite a few run ins with rocks...

 

I'll have to do some more thinking about this. Originally I thought just increasing the capacity of the stock tank to around 20 would offer me better range. Of course the aux tank idea could get me closer to 35 gallons (combined) for those epic journeys.

But the idea of just moving my primary tank to the rear and swapping in a 20 gallon at the same time might be the best route. Way better ground clearance as well as increased range.

Only downside would be how the weight that far back might effect the load on the springs. A lower tail is not at all what I need.

 

My 91 5speed only holds about 14gal from below e to full

 

I have a 95 tank in my truck and it holds no more than 14.8 gal. I didnt know that the 4runners had the options of an aux thank. good to know.

 

Well... that's kinda like saying 2nd Gen 4Runners had a 3.4 option.

But I know what you mean, more range seems unlikely until ideas get bounced around. Beauty of YT.

 

Doesn't bud built make an aux. tank

 

Just go with the extra tank and then have that 35 gallons for those epic journeys

 

http://www.pirate4x4.com/forum/showt...=ford+gas+tank
http://www.pirate4x4.com/forum/showt...ford+fuel+tank


the ford vans are supposedly 22 galls?

 

My 92 4runner with 5spd and v6 also has the 14.3 gallon (according to the owners manual) gas tank. I usually get a bit over 220 miles per tank in the city with 15mpg. Probably closer to 300 miles per tank on the highway but haven't used a whole tank on the highway.

My dad's 85 F150 has a second tank that looks like it might fit where the spare tire is. I haven't measured anything yet, but if it does fit I won't be so worried about going on long wheeling/hunting trips. It would sure beat the price of a new aux tank.

 

Thinking about doing a swap or adding an AUX. Did a search and there are dozens of threads on this topic already so I am going to just jump on another one. 4runner 88 22RE

Downey and NWOR has easy drop in replacements. Downey is gone and NWOR no longer carries them.

I am just going to post about all the info that I find on the subject.

AUX
http://www.nwmp.com/
Make: Toyota
Model: Four Runner/ Gravity Feed (without Rear Coil Suspension)1984-1989
Part Number: TPA-3
Type: Rear Auxiliary
Size: (Gallons) 14
Price: $630.00 (!!!!!!)

They sent me a hand drawing of the dimensions of the tank.

Replacement
http://www.browndavis.com.au/navtankmodels.html 130 liters (34.3 gallons) Australia (I want to see how this works)

Review
http://www.barneymc.com/toy_root/tec...y/gas_tank.htm
http://www.oocities.com/baja/3499/gt.html

Have some questions also. So it seems that all spare tire replacement gas tanks are gravity fed flowing into the main tank. So if I was on an incline would the gas flow from the main to the rear tank?