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Old 10-31-2011, 12:02 PM   #1
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upgrades needed for bigger tires?

I have a 97 4 cylinder 5 speed. I currently have it sitting on a 4 inch lift and 31 in tires. I'm really wanting to move my tire size up to 33's considering 31's look a little small on a 4 inch lift. I have no idea what my gear ratio is right now because i know the 97's have a few different gear ratio's they could have. So i guess my question is, what do i need to do gear/axle wise to throw on the 33's? do i need to do anything else you think?

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Old 10-31-2011, 12:15 PM   #2
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It should have 4.10 gears stock and 4.56s would be best for 33s i d think

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Old 10-31-2011, 12:19 PM   #3
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Quote:
Originally Posted by 06GoldenEagle View Post
It should have 4.10 gears stock and 4.56s would be best for 33s i d think
this would be true if the OP had the 4.0
for the 2.5, 4.88 is the recommended gear set.
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Old 10-31-2011, 12:19 PM   #4
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alright man appreciete the info
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Old 10-31-2011, 12:22 PM   #5
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alright man appreciete the info
you should also consider beefing up the rear end, the D35 that you have back there now is not known to handle large tires very well in stock form.
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Old 10-31-2011, 12:37 PM   #6
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yea thats what i was thinking. stepping it up a bit axle wise. i dont get why they only to say to replace rear axle though? is it just cause thats the one thats used the most in 2wd? cause i do some offroading to. just some mild stuff, and id say its about 80 and 20 percentage wise. would i ever need to replace the front?
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Old 10-31-2011, 12:40 PM   #7
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Originally Posted by zsimpson View Post
yea thats what i was thinking. stepping it up a bit axle wise. i dont get why they only to say to replace rear axle though? is it just cause thats the one thats used the most in 2wd? cause i do some offroading to. just some mild stuff, and id say its about 80 and 20 percentage wise. would i ever need to replace the front?
because the D30 up front is a decent axle, and more then up to the task of most wheelers running tires 35s or smaller.
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Old 10-31-2011, 02:03 PM   #8
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Your D35 will hold up fairly well to your 33s. I've been wheeling fairly hard with 33s now for over a year and my D35 is still hanging in their without issue. I'm putting an 8.8 in, but that's just in preparation for 35s down the road. You'll want to look into regearing ASAP with those 33s on that 4 banger though, so if that isn't something you can do yourself you might want to save money in the long run by installing a better axle now so that you only have to regear once.
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Old 11-01-2011, 12:54 PM   #9
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What is the 8.8 in regard to? What is an 8.8? Lol I'm a noob you guys, sorry for any dumb questions I ask.
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Old 11-01-2011, 12:57 PM   #10
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8.8 is in reference to the Ford 8.8 rear axle. It's a popular axle people install to strengthen the rear. It's a bit stronger than a D44.
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Old 11-01-2011, 12:58 PM   #11
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Quote:
Originally Posted by zsimpson View Post
What is the 8.8 in regard to? What is an 8.8? Lol I'm a noob you guys, sorry for any dumb questions I ask.
ford 8.8 rear axle. the ones you want come from 95-01 ford explores. that is if you look to get one, and weld all the brackets on yourself, etc.
now if you get a bolt in axle then there are pretty there are a few companies that have then available, one that is recommended a lot is Complete Ford 8.8" Rear Axle Assembly Jeep TJ Ready to Bolt In Axle Swap
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Old 11-01-2011, 12:58 PM   #12
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An 8.8 is a ford axle. Its considered stronger than a d44.
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Old 11-01-2011, 01:09 PM   #13
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Quote:
Originally Posted by freeskier
An 8.8 is a ford axle. Its considered stronger than a d44.
It IS.

Axle strength wise, tubes are bigger ring and pinion are bigger as well, but can't comment on the strength of the tubes, the two downfalls of 8.8 are spinning/bending tubes, and a weak carrier, both of which are easily fixed.

Its also around 1.25" shorter than your TJ axles and much heavier. But its still possibly the best bang for your buck
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Old 11-01-2011, 01:14 PM   #14
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Quote:
Originally Posted by IndyJeepMan

It IS.

Axle strength wise, tubes are bigger ring and pinion are bigger as well, but can't comment on the strength of the tubes, the two downfalls of 8.8 are spinning/bending tubes, and a weak carrier, both of which are easily fixed.

Its also around 1.25" shorter than your TJ axles and much heavier. But its still possibly the best bang for your buck
Bending wise you'll bend a 44 before an 8.8. Thats where the larger tube diameter comes in. People like to bitch though about tube thickness being 3/16 compared to 1/4.
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Old 11-01-2011, 01:47 PM   #15
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Quote:
Originally Posted by freeskier

Bending wise you'll bend a 44 before an 8.8. Thats where the larger tube diameter comes in. People like to bitch though about tube thickness being 3/16 compared to 1/4.
You really have to beat on an axle to get it to that point.
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Old 11-01-2011, 04:23 PM   #16
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Another vote for 4.88s here.
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Old 11-01-2011, 09:38 PM   #17
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Alright so 4.88's for sure with the 33's and probably should go with a bigger axle. 8.8 if possible. Gotcha. Thanks a lot guys. It's awesome getting answers from people with actual experience.
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Old 11-01-2011, 09:40 PM   #18
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Quote:
Originally Posted by zsimpson View Post
Alright so 4.88's for sure with the 33's and probably should go with a bigger axle. 8.8 if possible. Gotcha. Thanks a lot guys. It's awesome getting answers from people with actual experience.
read around, and you will learn TONS of useful things.

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