What's your MPG?. . .

[fj40z]

What's your motor? 2F desmogged with stock 4spd and T-case
What's your tires? BFG AT's 33x9.50
What's your MPG? 13-14
What's your mods? Pretty much set up stock

 

[brianj]

MPG on 2f

Motor- 2F no mods
Tires- 235/75/15
MPG.- 9

 

[atazman]

Fuel Consumption

Engine: 350 CID with Edelbrock Multi-Point fuel injection
Tires: 35" BFG Muds
Drivetrain: 4:11s; Arbs front/rear; SM 465 Tranny, Toybox, 3 speed T/C
Highway: 11.5 mpg (corrected for tire size)
Trail: Usually about 1 gallon/hour on trails like the Rubicon or Dusy/Ershim

 

[Bigslug]

Eeeeexcellent! Keep 'em coming guys.

At least now I know that my 11-12 is fairly normal.

I'm contemplating Downey's computerized fuel injection conversion if California ever says I'm smog-exempt, or I can convince a referee it's a cleaner way to go. Some say 30 years old (NEXT YEAR!) others say I'm on the wrong side of the "Screwed!" threshold.

From the replies, it seems that 5-speeds / overdrives are often discussed but seldom installed.

 

[Josie'sLandCruiser]

Hi All:

Getting "good" fuel mileage with a 40 Series TLC is hard - the weight of the vehicle, and lack of aerodynamics of the body and chassis fights against it.

Small displacement diesel engines and smaller tires can help. Over drive transmissions can help. But, the rig will never get mileage like a Geo Metro!


Instead of dropping major coin for the fuel injection system, spend $300 on a Aisen carb rebuild from Jim C. He will tailor the carb to the engine and emissions system in your rig.

for better mileage, make sure the tires are at proper street pressure, make sure the engine is tuned-up, and remove roof racks/tents (reduced drag.)

Good luck!

Alan


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Eeeeexcellent! Keep 'em coming guys.

At least now I know that my 11-12 is fairly normal.

I'm contemplating Downey's computerized fuel injection conversion if California ever says I'm smog-exempt, or I can convince a referee it's a cleaner way to go. Some say 30 years old (NEXT YEAR!) others say I'm on the wrong side of the "Screwed!" threshold.

From the replies, it seems that 5-speeds / overdrives are often discussed but seldom installed.

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Erik's the name. 12/78 FJ-40 hardtop's the game. Stock 2F and suspension, AM bumpers, winch, tire-rack + roof-rack. I've got the factory tent (neener neener)

 

[toyrunner]

78 FJ40

What's your motor? 'desmogged 2f, non-US spec dizzy and carb.


What's your tires? 31" Cooper A/T's

What's your MPG pre-mod? no clue. Probably 10-11 mpg

What's your mods?none


What's your MPG post-mod? 15 mpg in city and up to 18 on the highway.

 

[Fast Eddy]

I'm contemplating Downey's computerized fuel injection conversion if California ever says I'm smog-exempt, or I can convince a referee it's a cleaner way to go. Some say 30 years old (NEXT YEAR!) others say I'm on the wrong side of the "Screwed!" threshold.

You are on the wrong side of the threshold for sure. I don't know how anyone can think it's unclear. '75 and earlier is exempt, '76 and later is not. It is no longer rolling and likely will never be.

My CA-smog-passing stock '78 with 32" (measured) tires gets about 11 or 12 on the freeway at 70, so I rarely do that. We've been flat-towing it to the trailhead lately.

 

[Diesel42]

Motor 3B
Tires=33"X10.5" BFG
MPG=Worst(18.9)(best(26.3)
No mods-Turbo in planning(more power and better MPG)

 

[FJOE]

At 75mph thru the rockies to moab I get 10mpg. Almost ran out of Gas so I went 65 mph on th way home and got 12mph. Diff 4:11 and 33"x 12.5 wheel/tire.

 

[n2666s]

1978 FJ55 with an 87 2F + h42
otherwise bone stock except carb intake and exhaust manifolds + dizzy have been JCd
wheels 31 X 10.5 BFG ATs
600 Miles last 3 weeks average 14.5 MPG 80% freeway 20% in Town
speed.........freeway keep it around 65 to 70 MPH

Lou

 

[jmylie]

1986 HJ60

What's your motor? - 2H
What's your tires? - 33 x 1050 BFG AT's
What's your MPG pre-mod?
What's your mods? - HFS suspension about 3" lift
What's your MPG post-mod? 22 mpg

1977 FJ55

What's your motor? - 2F
What's your tires? - 33 x 1050 BFG AT's
What's your MPG pre-mod? - 14 to 15 mpg
What's your mods? - de-smpgged, Jim C carb rebuild
What's your MPG post-mod? - 18 to 20 mpg

 

[Bigslug]

OK. . .two recommendations for this "Jim C."

Who and where and how to contact?

 

[vk7ybi]

What's your motor? - 2F
What's your tires? - 33x12.5 BFG MT's
What's your MPG pre-mod? -
What's your mods? - de-smogged, probably not properly, I didnt do it
What's your MPG post-mod? - 4 mpg, maybe slightly better on the highway. On propane I get about twice that.

 

[Robert LaDuke]

OK. . .two recommendations for this "Jim C."

Who and where and how to contact?

Jim is in Ohio. Does excellent work. FJ40Jim@aol.com

What's your motor? - rebuilt 2F with Jim C. carb
What's your tires? - 33x9.5 BFG AT's
What's your MPG pre-mod? -
What's your mods? - none
What's your MPG post-mod? - 11 mpg

 

[graygoose67]

What's your motor? 71 chevy 250
Tranny? stock 3 spd
What's your tires? 35 12.50
Gears? 4.11 ( i think)
What's your MPG? 15-20 Amazing;p

 

[MoCoNative]

1973 FJ-40

235/75R15 Tires, 4.11 stock diffs, stock three speed.
I had a Holley carb, best I ever did with it was 18 one time, normal mileage was 10-12.

Put on a 77 2F high altitude carb, everything improved, except for raw power on the highway, now get a good solid 15MPG no matter what, usually figure on 8-10 MPG on the trail for fuel capacity and ability to get home. Hubs in for my work commute in the winter which is kind of highway usually 13-14MPG.

Running Mallory single point distributor, converted to electronic module, it is far more reliable that way. Stock spark plugs, timing advanced to 11degrees BTDC. I live at 6200 feet, higher elevation is not a problem, but it gets picky if and when I ever travel to elevations below 4500 feet, which is rare. Would probably have to retune it for lower elevation.

It was a factory hardtop, but I rolled and screwed up the top. Now thinking of going with Ehsans soft top, thinking it may get me another MPG or two, maybe. Haven't done it yet.

Also thinking of a B swap, could be nice to have that kind of mileage.

My 1984 60 series only gets 14-17 on really good days, fully stock. Different beast, I know, but it seems the 1F does better on gas.

 

[fussy_cruiser]

What's your motor? SB 350 w/HEI and Q-Jet
Tranny? SM465
What's your tires? 33x10.50x15 BFG MT's
Gears? 3.73
What's your MPG? 10-11 consistantly combined city/hiway, I was getting 8-10 consistantly until I balanced the mixture on the carb.

It is balanced now with perfect vacuum, I have been thinking about leaning it out a little to see if I can squeeze another couple MPG's out of it.

 

[IDave]

1964 FJ45

What's your motor? - F135
What's your tires? - 33 x 9.5 BFG AT's
What's your MPG 10-12?
What's your mods? - switched back to Aisin SD50 single barrel (stock carb) drilled for advance "non-usa" type distributor from the weber 28/32 it came with
What's your MPG post-mod? 14-17.

1970 FJ40

What's your motor? - F155
What's your tires? - 33 x 9.5 BFG MT
What's your MPG pre-mod? - 14 to 15 mpg
What's your mods? - switched from 2bbl rochester with retard distributor to non-USA Aisin carb/dizzy combo
What's your MPG post-mod? - 15 to 19 mpg

 

[nickwood48]

1978 FJ40

What's your motor? Stock 2F - 150,000 miles - all smog crap still attached.
What's your MPG pre-mod? 14 mpg mixed driving
What's your mods? n/a
What's your MPG post-mod? n/a

 

[Sea Knight]

.

What's your motor?
What's your tires?
What's your MPG pre-mod?
What's your mods?
What's your MPG post-mod?

I'll play...

'82 with stock 2F and all the California smog crap still in place
3.73 gears
33x1050 BFG AT's
No mods
12 mpg city, 15+ mpg highway @ 65mph, as high as 18 mpg if I hold it to <60mph on flat stretches.