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MPG

Started by MagicRat, March 26, 2014, 09:52:09 PM

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MagicRat

Hi everyone,
Still tire kicking here in Western NY.   Might have a good look soon at an '83, well cared for supposedly, Sx/4 model with 125K on it.  4 cyl -   what might one expect under normal driving conditions for MPG?  Just looking for really rough # if this was all tuned up and in good condition  - thanks!

Amc1320

Not sure about an SX , but my 81 spirit had a 4 cly 4 speed, no options and got 30mpg on the hwy, I took it to the AMO nats in St. Louis and filled it up in Tennessee and drove about 600 miles before I had to buy gas!

But no AC, no ps, no nothin so there was no drag on the engine, an SX would weight more plus if it has options that could effect mileage

It got better than 20 in town

Of course I took that engine out and put in a v8  so now it gets like 12.... Prob not one of my best ideas, but it sure sounds mean now!
Rob c
84 Eagle Limited Wagon (driven everyday)
81 Eagle Kammback
81 Spirit (undergoing surgery)
83 Spirit (parts car giving it all to keep the rest going)
Manchester, TN

Prafeston

Wouldn't happen to be this beauty would it?

http://westernmass.craigslist.org/cto/4390429333.html

Looks like a really nice car! Good luck!
1983 AMC Eagle SX/4 - Penny

MagicRat


Monkeyjoe

I have an 82 SX/4, 4cyl,  w/5 speed T5.  I have gotten as much as 34 mpg, usually 30-31 mpg. 
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

DownwardFlame

Quote from: Monkeyjoe on April 02, 2014, 03:50:42 AM
I have an 82 SX/4, 4cyl,  w/5 speed T5.  I have gotten as much as 34 mpg, usually 30-31 mpg.
I wish mine got that good...  When I filled mine up last time it only got about 11... But my motor being worn out might have something to do with that 
-1970 Mustang Coupe
-1982 F-150 Stepside
-1980 Eagle Wagon
-1981 Sx4

Prafeston

I tried to log every fill up in my old auto wagon. I did it all using fuelly. Cool website and they have an app so it's easy to log while on the road.

http://www.fuelly.com/driver/prafeston/eagle
1983 AMC Eagle SX/4 - Penny

IowaEagle

Excellent MPG Monkeyjoe.  The best I have gotten in my SX/4, I-6, auto, with 2.35 gearing is right at 30 on the Hwy.  This is desmogged car with the TFI (MIU) upgrade.
<a href="http://www.wunderground.com/US/IA/Toledo.html?bannertypeclick=miniStates">Click for Toledo, IA Forecast" border="0" height="100" width="150 [/url]  


Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

Monkeyjoe

It is good.  I built a custom cold air intake, with a hand fabricated air box for the top of the carb.  I drive pretty easy.  I have 3.55 gears. 

Now with the new motor rebuild, I have not checked my mileage.  I just finished rebuilding the rear end with the new 3.55 gears.  If you all remember, the mechanics at the yard in Pueblo Colorado put the wrong rear end in my car.  I will be driving the SX4 more now.  I will find out what the new mileage will be.
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

DaemonForce

Just curious, what kind of gearing is going on in your differentials and are you using an auto or gearbox? I personally believe the gearbox is the highest benefit for mileage but I'm hesitant to pounce on tall gearing like my 2.73s for anything smaller than a 6cyl. I'm thinking 3.54-3.73 is appropriate for a straight distance vehicle. My tired worn out 258 got anywhere from 14-18mpg before it finally grenaded itself. After a 4.7L swap I'm expecting 18-24mpg. It's just speculation at this point and I know the figures don't make sense but I'm doing everything to this engine and we'll see soon.
1983 Limited
AMC 258C {R2:27.Jun.13}
Carter 2681 {R2:28.Oct.12}
TorqueFlite A998 {R6: -20.Apr.12}
NP129 {R2:28.Apr.12}
M35-273 {???}
Compression: 0
Corrected Idle: 0RPM

Rebuild:
???

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