driving a welded diff on hard surface in a TJ? - JeepForum.com
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post #1 of 45 Old 01-16-2020, 01:27 PM Thread Starter
zjj
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driving a welded diff on hard surface in a TJ?

I own a 56 Chevy sedan built for straight line racing.... it is spooled in the rear with sticky drag radials that are 10" wide. I drive on the streets (not in the rain) all the time. NO issues. Turns a bit hard but to be expected at slow speeds.
I'm wondering how a 4" lifted TJ would drive with in 2wd obviously on hard surface roads at say 25 to 30 mph and then maybe at hwy speeds to get to the trail system? It has 35" Dick Cepek Extreme Countries on it as well.


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post #2 of 45 Old 01-16-2020, 01:37 PM
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I had a Toyota pickup with a welded diff on 35 MTs, It wasn't impossible on the street but not the best option. I would use a lunchbox locker before I welded the diff. Your 56 handles well because the slicks flex, you will get less flex from 35" Cepeks
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post #3 of 45 Old 01-16-2020, 01:47 PM
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You will pull nice wheelies if you're turning left and giving it moderate to heavy throttle.
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post #4 of 45 Old 01-16-2020, 02:35 PM
Jerry Bransford
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Spools are very predictable on the street so long as you behave when driving with them. I have a couple friends with welded diffs (spools) who daily drive their TJs with them. I would not want to drive with a spool on icy or snow-covered roads but I wouldn't worry about it that much on the pavement.
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post #5 of 45 Old 01-16-2020, 02:39 PM Thread Starter
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Originally Posted by Jerry Bransford View Post
Spools are very predictable on the street so long as you behave when driving with them. I have a couple friends with welded diffs (spools) who daily drive their TJs with them. I would not want to drive with a spool on icy or snow-covered roads but I wouldn't worry about it that much on the pavement.
I agree. Snow wouldn't be cool, and ice is bad with anything...lol.

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post #6 of 45 Old 01-16-2020, 10:05 PM
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driving a welded diff on hard surface in a TJ?

Well, depends on the axle. Weld up a stock 35 and you can kiss the shafts goodbye in short order.

I personally would not want to live with a spool on the street - even with an axle that could take it. Too much drama in the turns, especially with a set of big, sticky rubber.
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post #7 of 45 Old 01-17-2020, 08:30 AM
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I did it for a few months when my Detroit broke. I put in a mini spool in my 8.8 to make a trip and driving it on the road wasn’t bad. However going slow in parking lots making tight turns was terrible. It caused a lot of body roll and chirped the tires constantly.

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post #8 of 45 Old 01-18-2020, 12:27 AM
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Never did on a TJ but drove 2 CJ-5's and a YJ with a welded rear axle. Tires chirped on just about every turn and you will wear thru a set of tires REAL fast. With as light as the rear on our Jeeps are it just makes it fun.

As everyone else has said on snow and ice it would SUCK and you would slide off to the side of the road on any sloped roads.

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post #9 of 45 Old 01-18-2020, 06:31 AM
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since i have an extra front and rear end, i would do it in a heart beat it i had a mig welder.
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post #10 of 45 Old 01-22-2020, 03:11 PM Thread Starter
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so.... found out that the rear end is open and the front has an Aussie locker. The rear is NOT welded b/c he knew it would take out the stock axles with the 35's.....
sorry to mislead the topic, but lead to some interesting conversation anyway! thx fellow Jeepers!

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post #11 of 45 Old 01-22-2020, 04:43 PM
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since i have an extra front and rear end, i would do it in a heart beat it i had a mig welder.
Mig is not the best process for that repair / modification. Arc welding is the best method really .

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post #12 of 45 Old 01-22-2020, 05:16 PM
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Mig is not the best process for that repair / modification. Arc welding is the best method really .


Why is that?

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post #13 of 45 Old 01-22-2020, 06:04 PM
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Why is that?
For the most part / generally speaking, Arc welding will provide you with much better / deeper penetration & penetration is what its all about when it comes to welding. Not that the mig welding process couldn't do the job-- it might and you might not have any issues. You also have a greater selection & ease of access of filler material in the arc welding process than you do in mig.

Mig has its place and i have used them both quite a bit, but where I NEED strength and penetration - arc ( stick) is a no brainer here.

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post #14 of 45 Old 01-22-2020, 06:34 PM
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Quote:
Originally Posted by BlueFl.Wrangler View Post
For the most part / generally speaking, Arc welding will provide you with much better / deeper penetration & penetration is what its all about when it comes to welding. Not that the mig welding process couldn't do the job-- it might and you might not have any issues. You also have a greater selection & ease of access of filler material in the arc welding process than you do in mig.

Mig has its place and i have used them both quite a bit, but where I NEED strength and penetration - arc ( stick) is a no brainer here.
I dunno why you don't believe MIG can penetrate deeply for Jeep size steel. For just one example MIG is commonly used in large ship building where they're welding huge plates of steel together for hull construction where penetration and strength is paramount. IIRC MIG was first developed for large naval and commercial ship and large steel building frame construction. A 220V MIG welder can blow holes through anything on a Jeep so penetration is not an issue. And to be sure, MIG is absolutely arc welding. Oxy-acetylene is not arc welding.
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post #15 of 45 Old 01-22-2020, 07:15 PM
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Originally Posted by Jerry Bransford View Post
I dunno why you don't believe MIG can penetrate deeply for Jeep size steel. For just one example MIG is commonly used in large ship building where they're welding huge plates of steel together for hull construction where penetration and strength is paramount. IIRC MIG was first developed for large naval and commercial ship and large steel building frame construction. A 220V MIG welder can blow holes through anything on a Jeep so penetration is not an issue. And to be sure, MIG is absolutely arc welding. Oxy-acetylene is not arc welding.

If he is bent on doing it wrong then he should just do it right.

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