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Old 05-20-2013, 12:50 AM   #1
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welded spider gears?

I'm not much of a auto cross racer or anything like that but I do drive on the streets a lot.
I'm considering doing this since posi's for the 7.5 are $400+.

I know that some of the cons:
chance of the weld breaking.
chance of the gears breaking.
chance of the axle breaking.

I read that it would mostly happen around turns where it would be putting stress on it.

I'll be getting 3.45 or hopefully 3.73(if my grandfather lets me get the gears out of his ranger). Only racing I do is at the local drag strip. Which is why I need something like this to help with my launch.

Is their any more cons that I missed? or hopefully some more pros to doing this?

I read that it usually depends on how good the weld is and that good determine how durable it is.
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Old 05-20-2013, 12:52 AM   #2
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do not weld your rear unless this is a dedicated track car...you will regret doing so if this see's street use
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Old 05-20-2013, 01:06 AM   #3
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Yeah, you'll have no traction when making turns. If you're doing hwy speed and have to make a turn, the chances of spinning out are high.

I've got welded gears on my 240sx. It's a great drift car but DD? ...not so much.
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Old 05-20-2013, 02:43 AM   #4
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Pull the posi from the ranger you're getting the gears from..
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Old 05-20-2013, 06:05 AM   #5
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Quote:
Originally Posted by lemons95 View Post
I'm not much of a auto cross racer or anything like that but I do drive on the streets a lot.
I'm considering doing this since posi's for the 7.5 are $400+.

I know that some of the cons:
chance of the weld breaking.
chance of the gears breaking.
chance of the axle breaking.

I read that it would mostly happen around turns where it would be putting stress on it.

I'll be getting 3.45 or hopefully 3.73(if my grandfather lets me get the gears out of his ranger). Only racing I do is at the local drag strip. Which is why I need something like this to help with my launch.

Is their any more cons that I missed? or hopefully some more pros to doing this?

I read that it usually depends on how good the weld is and that good determine how durable it is.
I've been a professional welder for 25+ yrs, the cons you listed are enough not to do it, it will not hold. It's not a matter of if it will break, but when it will break.
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Old 05-20-2013, 06:10 AM   #6
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Quote:
Originally Posted by tc x 4 View Post

I've been a professional welder for 25+ yrs, the cons you listed are enough not to do it, it will not hold. It's not a matter of if it will break, but when it will break.
+1
Your always putting stress on the weld and eventually the jerking of launches and everything will break it then instead of driving it until you get an 8.8 or gears for yours(just saying, don't need the controversy of the gear post last night)
Lol but your car will be put up until fixed
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Old 05-21-2013, 12:33 AM   #7
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Originally Posted by davidcseifert View Post
Pull the posi from the ranger you're getting the gears from..
neither of them have posi... I looked up the codes that were on door. Atleast one has 3.73 though.
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Old 05-21-2013, 12:12 PM   #8
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Quote:
Originally Posted by lemons95 View Post

neither of them have posi... I looked up the codes that were on door. Atleast one has 3.73 though.
Ghey
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