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Old 02-26-2004, 10:34 AM
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Default Paging six speed 12 bolt guys

Have you ever broken a 30-31 spline axle? 4.30 to 4.56 gears on 28 inch slicks. Posi or spool? (If posi did you break that as well?)

Looking for cars in the 1.3-1.6 sixty foot range?

I am curious as to the strength differences between the 30 and 33 spline axles

Thanks again,

Chris
Old 02-26-2004, 11:14 AM
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I never broke the spool with 28's. The posi however just exploded all the spider gears out of it. That was before the TH400!
Old 02-26-2004, 11:38 AM
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i have this problem as well, or worried about it.

currently have the moser HD posi and 30 splines.

i figure i'm looking forward to some sort of failure, and a bill for 33 splines, a billet steel yoke, a spool or the like, and a new set of 3.42's.
Old 02-26-2004, 11:38 AM
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Originally Posted by DERTY
I never broke the spool with 28's. The posi however just exploded all the spider gears out of it. That was before the TH400!
I broke the posi also. Never have hurt the 33 spline axles or the spool. I have however been through 2 sets of 4.56 gears with 28 inch slicks.

Coach
Old 02-26-2004, 11:44 AM
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hmmm interesting. So it sounds like the axles are fine (30 spline) but the posi/gears might be the weak point (especially 4.56s)

Old 02-26-2004, 11:44 AM
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I broke the posi as well, but never hurt the axles or gears yet. 33 spline, and 4.56's FYI
Old 02-26-2004, 11:49 AM
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I twisted 2 30 splines and blew the rear apart with 15-1.6 60's on a 27x11.5 QTP
it wasnt prety.
Old 02-26-2004, 12:11 PM
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Chris my 12 bolt has held up to the brutal torque my car makes, problem free.
Old 02-26-2004, 12:17 PM
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I busted a posi too, and cracked the welds at the housing to axle tubes. But the spool and axles have been fine. 33 spline.

I got a 33 spline spool i'll be selling shortly if you need one
Old 02-26-2004, 12:40 PM
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I have 33 spline axles. I haven't had any problems with the posi and have since upgraded to a spool.

Taner has twisted his 31 spline axles 2 summers ago,and since gone to 40 splines. You know him, Mr.Excessive.

Roman
Old 02-26-2004, 01:09 PM
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You guys that have broke your posi's what did you spend to rebuild them?
Old 02-26-2004, 01:33 PM
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Nothing yet, i sold the 12 bolt, busted posi and BMR bar as a package. Letting them rebuild it
Old 02-26-2004, 01:35 PM
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Originally Posted by y2khawk
Nothing yet, i sold the 12 bolt, busted posi and BMR bar as a package. Letting them rebuild it
LOL
Old 02-26-2004, 01:37 PM
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This is a little off the topic but when i ordered my 12 bolt moser from TTPERFORMANCE I was told since I upgraded to 33 spline axles that they came with a ten year warrany from moser. Sounds to me like they should be pretty tough if your going to offer a warranty like that.
Old 02-26-2004, 01:37 PM
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Who needs a posi, Corvettes are for corning. F-body's are straight line cars! On a more serious note though I ditched the posi for a spool and had a blast with it on the street. No issues at all driving around except for really tight turns. You just need to add more gas and it will take care of that problem!
Old 02-26-2004, 02:35 PM
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haha I had a spool in my last 12 bolt but it was pretty noisy
Old 02-26-2004, 02:48 PM
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how is a spool on rear tires and in rain?

and should i go minispool and keep abs or full spool and lose the abs? i drive on the steet every day rain or shine
Old 02-26-2004, 02:56 PM
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The spool is ok to some degree. I only drove it in the rain a little bit. I would expect the inside tire to slip a little bit, but nothing crazy. Personally I had no issues with the streetability of it. The only issue I had was with pushing it around the driveway with the wheels turned. A spool with wide tires makes it very difficult to position a car by pushing it around. Driving it is no big deal though.

As far as ABS, I got rid of mine long ago. I never used it in a situation where non-abs brakes couldn't stop the car. Traction control also takes a hike with a spool too. With the system applying one brake on the inside or opposite side it only applies brakes to the whole axle.
Old 02-26-2004, 03:17 PM
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I don't think they make a minispool / locker / anything like that for a 12-bolt 33-spline passenger car setup. It's either Eaton Posi or full spool. Nine inch is a different matter... you have options.

I agree about the spool, the only time it's annoying to me is in slow turns (parking type maneuvers). A manual rack and a spool make for an interesting combination.

On concrete, the hoppy-chirp is kinda cool tho.
Old 02-26-2004, 03:19 PM
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Two ring and pinions..

2 differentals.. 33 spline rear.

spool now



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