4cyl sucks - JeepForum.com
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post #1 of 7 Old 11-20-2003, 11:47 PM Thread Starter
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4cyl sucks

ive got a 84 jeep cj7 with the 2.5 4 banger and a 5spd. i have 33's on it and it just doesn't have enough balls to pull em. what engine will bolt right to the same tranny with the least amount of mods. and what would be the cheapest route to go, i am on a budget. thanks

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post #2 of 7 Old 11-21-2003, 08:26 AM
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You could do an engine swap, but have you considered gears. My CrazyTJ has a 4 banger with 37s. All you need is the right gearing and you'll have more torque then you can imagine. I'd say, if your 4 banger works good now, then regear. If the motor is shot, then I'd say go for a V8 or something.

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post #3 of 7 Old 11-21-2003, 06:26 PM
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hey, I also have 33's with a 2.5, the gears are 4.11 . What would work better?
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post #4 of 7 Old 11-21-2003, 09:31 PM
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Hey I have 33s and a 2.5 with stock gears, and it drives fine........I didn't buy a jeep to race anyone, although I will get some gears eventually, but other things seem to be more important......like a winch and lockers and well.....the list goes on and on

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Herculined, rock it air intake, tb spacer, warn heavy duty front bumper with D rings and 2 KC 150watt Daylighters, warn rear bumper with tire carrier, 1" BL and 1" MML, 4"RE suspension w/dicos sitting on 33x12.5 swamper TSLs on rockcrawler
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post #5 of 7 Old 11-22-2003, 10:28 AM
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Originally Posted by raZe
hey, I also have 33's with a 2.5, the gears are 4.11 . What would work better?

4.56 as a minimum. Me personally, I would go with 4.88's.

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post #6 of 7 Old 11-22-2003, 12:41 PM
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I put 4.88's in my 98 tj and you can cruise at about 75 on a FLAT highway. I drove it from cocoa beach FL to Colorado Springs with GW 33 MTR's with the 4.88's and it wasnt bad at all. Had fun drafting the semis to. Now that Im here in CO though the Mt's are killing me so I'm doing a 4.8L vortec swap. But if your not in a very high Mt area the 4.88 work awsome and can turn 33, 35 with no problem.

Originally Posted by krazykracker
4.56 as a minimum. Me personally, I would go with 4.88's.

98 TJ, 2.5 ltr, 4.0 TB + 1in Spacer, K&N Ram Air Intake
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post #7 of 7 Old 11-22-2003, 07:54 PM
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CrazyTJ has a 4 banger with 37s.
As Matt said, I am running 37" MTR's with a 4 banger, and if it wasnt for the 4:88's I probably would have swapped an 8 in there. If you regear, as pretty much everyone is in agreeance, do 4:88's. They are perfect, plus I dont think you can go any lower gear in a front Dana 30 , if thats what you have. HTH

97 TJ 4 cyl/5 speed/4:88's,6+"of lift,37 Parnelli Jones on DC-1's,9"rear/Moser alloys,Dana30/Evolution alloys,lockers,cage, winch,4 to1 ,lots of other stuff!!!
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