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Old 02-05-2014, 08:34 PM   #1
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bigger engine

Just got my 06 tj! Love it but the 2.5l isn't for me. I'm hoping to put a 4.0l in soon, I was wondering if I go bigger with the engine is there anything else I should upgrade as well?

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Old 02-05-2014, 08:45 PM   #2
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upgrade the engine to a v8(:

The swap to the 4.0 isnt worth it for the money when a v8 swap isnt much more money.

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Old 02-05-2014, 09:03 PM   #3
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Moody AFB..welcome aboard..I am at Moultrie
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Old 02-05-2014, 09:09 PM   #4
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Welcome Moody!!
I don't know much about the logistics of what is required but I agree with jherrington. If you are going to start dumping that kind of money into a tj, I think you should go big and make it WORTH it, or go home. I would dearly love a v8 in my tj.
Good luck and keep us in the know.
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Old 02-05-2014, 09:57 PM   #5
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Quote:
Originally Posted by JurassicJeeper93 View Post
Just got my 06 tj! Love it but the 2.5l isn't for me. I'm hoping to put a 4.0l in soon, I was wondering if I go bigger with the engine is there anything else I should upgrade as well?
to swap in the 4.0, you will need not only the engine, but the transmission, transfercase, and computer(and maybe the wire harness to IIRC) from the jeep it came out of. you will need to cut off the original engine mounts and weld on new ones in the correct place. lots of work, and lots of parts. this is why so many times it is suggested to just go up to a V8, as you would be doing all that anyways. depending on your desired tire size, and new rear axle as well if going to the 4.0, and if a v8 is desired, a stronger rear end will pretty much be required.
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Old 02-05-2014, 10:13 PM   #6
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Or sell your 4 banger as you look for a 6 cyl.
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Old 02-06-2014, 12:26 AM   #7
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Originally Posted by jherrington View Post
upgrade the engine to a v8(:

The swap to the 4.0 isnt worth it for the money when a v8 swap isnt much more money.
Golen stroked 4.0 Best of both worlds in my opinion.
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Old 02-06-2014, 12:58 AM   #8
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First, you have a 2.4L instead of the 2.5L...also, as the others have said...you need the motor, transmission, transfercase, computer, and to upgrade the suspension to handle the extra weight from the standard 2.4L springs.

You might as well sell it and get a 6 cyl...
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Old 02-06-2014, 01:00 AM   #9
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The biggest problem with the 2.4L 4cyl. Is getting into the proper rpm range. It really doesn't start producing power until you get from 2800 to 3200 rpm's. Do you have a lift, stock gears? What size tires? manual or auto ?? I also have an 06 with the 2.4L no lift . Stock 3.73 gears 31/10.5/15's but the thing not original as far as drivetrain is the six speed manual was swapped for a 5 speed out of an 04 2.4L
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Old 02-06-2014, 01:01 AM   #10
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And sure it doesn't have the power of a 6 or an 8 but it gets around just fine and I have no trouble getting up and going or merging on the highway
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Old 02-06-2014, 05:28 AM   #11
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I'd regear first before considering on swapping engines if it was me, it is a cheap quick way to gain some mean power. After that I would go for the v8 conversion. Why go through all the trouble when you can pick a aggressive engine

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