fuel consumption?

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mightyarrow

10 Year 15 Year
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Aug 7, 2007
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I've got a 87 4wd truck with a 22r motor, carbed.I've got 31-10 1/2-15's on it.Got a new carb on it and fuel pump.I'm getting terrible gas mileage.:confused:
I bought the truck used not sure of gearing but would guess their stock.
Could it be the tires?What else might it be?I'm curious what kinda mileage other people are getting with 22r carbs?
 
Sheeeeeeeitttt, carbed 22r's get crap gas mileage no matter what you do to them. The very best you could ever hope for would be 20 mpg, but not likely. When I got mine I got 15, since then numerous changes and I still get 15. 15 uphill, 15 downhill, 15 freeway, 15 sitting in my yard. Header didn't help one bit with mileage nor did k&N filter/exhaust/tune up or anything else.... Hopefully someone else has something to offer. I have heard plus's and minus' of regearing and mileage, don't know first hand.
 
dizzidave said:
Sheeeeeeeitttt, carbed 22r's get **** gas mileage no matter what you do to them. The very best you could ever hope for would be 20 mpg, but not likely. When I got mine I got 15, since then numerous changes and I still get 15. 15 uphill, 15 downhill, 15 freeway, 15 sitting in my yard. Header didn't help one bit with mileage nor did k&N filter/exhaust/tune up or anything else.... Hopefully someone else has something to offer. I have heard plus's and minus' of regearing and mileage, don't know first hand.
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true dat

Stock 22r?


96hp?


BFG 31's? (very, VERY heavey)


Steel wheels?

Go Aluminum.


I'd say avg, is 14


If your not going to re gear (I wouldnt bother) get a light wheel and tire
 
I'm always amazed that no Toyota mechanic on the planet could ever successfully rebuild a stock Toyota carburetor, yet I read all these internet post about happy factory carb owners---shocks me!!! Toyota mechanics got to the point where they would sell you a new carb but not rebuild yours, they didn't want the come-back. The one guy I know who claims to be "Factory Carburetor Rebuild God" has to rebuild his own carb every time I turn around---Gee Whiz!!!
What's all this got to do with your poor gas milage??? The first sign that a factory carb needs a rebuild is Poor Gas Milage!!! Then all kinds of other bad poo-poo happens.
 
I had an 86 4wd carbed truck on 31 bfg's with steel wheels and 4.10 gears and got around 18. So.... there you go....... what are you getting, and are you correcting for the over sized tires?

With 31's you're about 10% over stock, which means you're going 10% faster than your speedo is telling you and 10% farther than your odometer is telling you.....
 
My 83 only got about 16mpg with 31s and stock gears (4.10). I'm now running 35s with 5.29s and get 18-20mpg on the hwy.
 
Running near-stock 22R [flowmaster cat-back] with 31's and aluminum wheels I always get about 20mpg.

What oil weight do you use and what is your ambient temperature like typically? It's been 95-105 degrees this summer in Boise, and I'm using 20W-50 oil.

Check your ignition system; plugs, wires, distributor cap (may be cracked -> leaks electricity) etc.

Odd that you guys get such poor mileage o_O When I got my truck about 2 months ago it got 15, but through general tuning up its up to 20 solid.
 
I am running a 85 carbed pick up with 33's steel wheels and get 17-20 mpg........ Stock motor, high flow magnaflow cat and exhaust..... No complaints!!!!
 
Downey said:
I'm always amazed that no Toyota mechanic on the planet could ever successfully rebuild a stock Toyota carburetor, yet I read all these internet post about happy factory carb owners---shocks me!!! ...
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WTF, who are these "mechanics" I hope you don't let them do other work for you!:eek: I have rebuilt more Aisin carburetors than I care to remember, with very good success. They are relatively simple, reliable carburetors, well matched to the motor and I cant think of a better one that I would replace it with.

That said I agree that carburetors are way past their "born on date" and FI is a far better setup, but if your going to run a carb the stock one is a good choice.
 
Yeah, I find it hard to believe that nobody can rebuild an Aisin, wonder what JimC would have to say.... After all, somebody built that carb in the first place, how could nobody be capable of doing it again?
 
of the five toyotas i have owned the average is about 18mpg's.the best i ever got was with a 88 with 40k original miles 225 tires and that was 23 all highway driving.the funny thing is my 94 ford f150 with 200k averages 19 and the best highway mileage of 24mpg.it has a straight 6 and a five speed.never could figure out why a truck that weighs 1200 pounds more and with a motor almost twice the size gets better mileage.toyotas are not the gas misers everybody thinks they are.
 
jhnLennon said:
of the five toyotas i have owned the average is about 18mpg's.the best i ever got was with a 88 with 40k original miles 225 tires and that was 23 all highway driving.the funny thing is my 94 ford f150 with 200k averages 19 and the best highway mileage of 24mpg.it has a straight 6 and a five speed.never could figure out why a truck that weighs 1200 pounds more and with a motor almost twice the size gets better mileage.toyotas are not the gas misers everybody thinks they are.
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And a buddy of mine has an early '80s ford 2wd camper special that gets 7 mpg no matter how it's driven. So I guess fords are not the gas misers you think they are.:rolleyes:

When your comparing oranges, make sure one isn't an apple!:D
 
Tools R Us said:
And a buddy of mine has an early '80s ford 2wd camper special that gets 7 mpg no matter how it's driven. So I guess fords are not the gas misers you think they are.:rolleyes:

When your comparing oranges, make sure one isn't an apple!:D
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yeah it is probably a 1 ton or 3/4 ton with a big block and a automatic.look at 1994 epa mileage estimates for the ford half ton and toyota truck you will find that they are really close. my wood truck is a 82 ford 3/4 ton 4x4 with a 351w and a 4speed np435 and i average 11 with that ,i have seen 13 with it on ther highway.so what i was saying is that toyotas arent as good on fuel as people would expect for a truck with a 4cyl. i know alot of people running full size trucks that are getting high teens low 20's highway.your comparison of a camper special pickup would be closer to the apple than a newer half ton fuel injected truck:rolleyes:
 
I;m getting about 14 mpg.I do have 15x8 steel wheels.I recently put in new plugs,wires,distributor cap.I crawl up under my truck every day almost, expecting to see gas leaking. I use 10w30 quaker state high mileage oil.I really don't want to go to smaller wheels and tires(looks wussafied)but if it'll help my mileage ,I'm gonna have to.I thought getting a four banger was gonna help on gas,at this rate i might as well go v8.Anyway thanks for the feedback,I really appriciate it.
 
Tools R Us said:
And a buddy of mine has an early '80s ford 2wd camper special that gets 7 mpg no matter how it's driven. So I guess fords are not the gas misers you think they are.:rolleyes:

When your comparing oranges, make sure one isn't an apple!:D
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I know that the 70s-80s Ford trucks were available with several different axle ratios, so that could be a factor as well. I worked for a cable tv company and they ordered all their trucks with low rear axle gears (4.11 IIRC), so that the std 6 could handle the hills when loaded heavily. Since the trucks seldom ever went over about 40-50mph it was a good solution, but I'm sure that folks bought the used ones were disappointed at the gas mileage if they drove them on the highway. :frown:
 
The point that I was trying to make is that it's not fair to compare across generations of vehicles. The '90's-00's were very very dynamic in efficiency development, with each new generation making better mileage, sometimes in huge leaps. Case in point, on the new Tundra the 4.7 V8 gets 15/18 mpg and the 5.7 gets 16/20 mpg epa rated.

The 20R series are great motors, but they are a '70's design and not the most efficient. Even in the latest 2wd models it were doing good to get mid 20's mpg. Toyota is historically a relatively conservative company, they don't make rash design changes, more like stick with and develop what works biz plan. IMHO they stayed with the 20R series too long, the 2.7's and 3.4's smoke them.

All vehicle design is a compromise, some manufactures go for flashy, some fast, some most efficiency, etc. My take on Toyota, is they try to build the best all around vehicle possible, not necessarily the best in any one category, but when you add up all of the category's, reliability, mpg, safety, etc they score well.
 
Downey said:
I'm always amazed that no Toyota mechanic on the planet could ever successfully rebuild a stock Toyota carburetor, yet I read all these internet post about happy factory carb owners---shocks me!!! Toyota mechanics got to the point where they would sell you a new carb but not rebuild yours, they didn't want the come-back. The one guy I know who claims to be "Factory Carburetor Rebuild God" has to rebuild his own carb every time I turn around---Gee Whiz!!!
What's all this got to do with your poor gas milage??? The first sign that a factory carb needs a rebuild is Poor Gas Milage!!! Then all kinds of other bad poo-poo happens.
Click to expand...

What planet are you on :rolleyes:? I rebuilt my carb and has been running fine for years, and I am not a mechanic. I am getting 16-20 MPG, with 33s tires and 4.88 gears.
 
mightyarrow said:
I've got a 87 4wd truck with a 22r motor, carbed.I've got 31-10 1/2-15's on it.Got a new carb on it and fuel pump.I'm getting terrible gas mileage.:confused:
I bought the truck used not sure of gearing but would guess their stock.
Could it be the tires?What else might it be?I'm curious what kinda mileage other people are getting with 22r carbs?
Click to expand...

Mighty,

When was the last time you had a tune up done on your truck? Also, I would flush the engine, and try different octanes to see if your performance changes for the better. I have a 90 4x4 Extended Cab 235 75r 15 tires 5 speed and I get 18 in the city and got 26 on the hwy once on a recent trip to OH. How are you driving this truck, how many miles on your motor? Im sure if you change out your camshafts and new exhaust you may get an increase in mpg.

Mark
 
My old 81 got about 18 with a webber carb on 33" TSL's and stock gearing.

My current 84 (with EFI) gets 22 or so with the topper on. I average 20 with it off. That's ridin' on 37's baby with 5.29 gears!

- Brandon
 
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