258 4 speed gas mileage? also cj5 or7 to get? - JeepForum.com
 
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post #1 of 7 Old 10-21-2003, 12:26 AM Thread Starter
Renegade_Rick
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258 4 speed gas mileage? also cj5 or7 to get?

What kind if gas millage can I expect from a Cj with a 4 speed stick, weber carb and ignishion upgrade? 16-17 Dose that sound right? Also is it worth it to get a 80+ cj to get a dana 300 t-case? Where I live in oregon CJ5's seem to be priced fairly well but 7's are very spendy. This will be my main mode of transport so do you guys think it would be worth the extra cash for a 7? Thanks for your time.


R


Better to be "dead and cool" than alive and uncool.

1999, Sport, 4-door, 4L-I6, AW4 auto, np231, 8.25 rear, dana 30 h-p.

BFG T/A KO P235 tires, KC 130w slimline lights, skid-row t-case skid more to come!
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post #2 of 7 Old 10-21-2003, 10:13 AM
rwcloukey
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Quote:
Originally Posted by Renegade_Rick
What kind if gas millage can I expect from a Cj with a 4 speed stick, weber carb and ignishion upgrade? 16-17 Dose that sound right? Also is it worth it to get a 80+ cj to get a dana 300 t-case? Where I live in oregon CJ5's seem to be priced fairly well but 7's are very spendy. This will be my main mode of transport so do you guys think it would be worth the extra cash for a 7? Thanks for your time.


R
i get 130-150 per tank

81 cj7.
I6
herced tub
diamond dash
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post #3 of 7 Old 10-21-2003, 10:15 AM
jeepdaddy2000
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This is a difficult question to answer, since there are so many variables. A stock early 80's 6cyl CJ in good running condition will hit the high teens if driven responsably. However, such things as lift kits, tire size, engine mods, gearing, and driving style can effect milage to a high degree. If this is going to be your main transpo, with some occasional offroading, I would recomend(may the Jeep God forgive me!) a later J model with the fuel injected 6. These Jeeps ride and drive much better than the earlier models, and the prices are hitting rock bottom. I live in Southern Ore.,and helped a friend look for one about 6 months ago. We were finding late 80's and early 90's from the upper 2k$ to 5K$. Good luck with whatever you decide.
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post #4 of 7 Old 10-21-2003, 10:21 AM
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I am running an 84 CJ7 258/t5 2" lift w/31" tires I have the lareado package with the hard top. I seem to be 15-18 mpg around town. I have a 72 CJ5 stock w/3spd it doesnt go over 50mph and gets around 15mpg. The CJ7 handles a lot better and the 10inches or so longer make it roomier as well. hpe this helps.

84 CJ7 Laredo 258/T5 herced tub 86/D44 4.5"RE lift, 33Xterrains and a TWoods CV driveshaft Custom bumpers and tire rack.Blue Jeep Club #140
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post #5 of 7 Old 10-21-2003, 12:35 PM
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i have an '81 cj7 on 35's and a weber carb and im gettin around 13mpg. Also im a college student surrounded by ricers so i do drive it pretty hard and im still pullin decent gas.

I would probably get better but i havn't tuned the carb yet...

1981 CJ7 - In lots of pieces... in process of build up

4.5" Rubicon Express LIft kit (still on frame)
35x12.5x15 BFG Mud Terrain tires on 15x10 rockcrawlers (still on stock axles waiting for Dana 44's to be rebuilt)
Chevy 305 - Lunati RV cam, stock heads w/slightly cut valve springs
SM465 tranny and NP205 t-case awaiting rebuild
flattie fenders cut front bumper

RHRacing - "We always come first"
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post #6 of 7 Old 10-21-2003, 04:32 PM
johny1i
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On my CJ with the 4-speed, 32" tires and stock rear gears, I get approximately 145-150 miles per tank (9.5-9.7 gallons to fill up)--which equals approximately 15.8 mpg. However, the speedo is off by 10%, so if you add that to come up with the actual miles driven, I get 17.4 mpg. I used to get into the 18's with the 235/75 tires that were on it when I bought it.

Funny thing is that I get about 265 miles on the YJ out of 17 gallons, which is 15.6 mpg. In fact, I have a hard time getting over 16 at the absolute best, and that's with 30" tires. I'm almost positive that the difference is that the AC is always running in the YJ, but I never thought that an AC could actually kill the mpg more than large tires.

Currently an '86 CJ-7 and a '77 CJ-7 Golden Eagle---#4 and 5 following a '01 Sahara, '90 Sahara, and '85 CJ-7....
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post #7 of 7 Old 10-22-2003, 05:14 AM Thread Starter
Renegade_Rick
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Thanks guys and yeah I know a YJ would be a better choice. But it woulden't be the cooler choice. I'll most likely be running 31's on road and 33's off road so the millage won't kill me. I only get 20mpg with my 1.9L carbed toyota now so lousing a few mpg is no big deal.
Just one more thing. IS it really worth it to get a 80+ CJ for the dana 300 t-case? Thanks for you time.


R

Better to be "dead and cool" than alive and uncool.

1999, Sport, 4-door, 4L-I6, AW4 auto, np231, 8.25 rear, dana 30 h-p.

BFG T/A KO P235 tires, KC 130w slimline lights, skid-row t-case skid more to come!
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