need new gears for my 12 bolt help
10-07-2003, 10:29 AM
#1
need new gears for my 12 bolt help My 4.10 in my strange 12 bolt are just to dam loud. I need a new set but not sure what the specs are. Like on the stock 10 bolt 7.5 carrier for passenger cars. What is it for a 12 bolt? Also can someone recomend a good brand? They need to be strong and some what quiet for a car thats 300 miles a week daily driving and I made about 50 passes this year at the track? Last ? need a good install kit?
Rears a Strange 12 bolt with 4 channel abs & tcs, 33 spline axles and the upgraded posi(auburn ?) I will put another set of 4.10's or maybe even 4.30's in it.
Thanks
Rears a Strange 12 bolt with 4 channel abs & tcs, 33 spline axles and the upgraded posi(auburn ?) I will put another set of 4.10's or maybe even 4.30's in it.
Thanks
10-07-2003, 10:36 AM
#2
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Re: need new gears for my 12 bolt help make sure you ask strange about the ntn bering retro fit. that makes the rear alot quieter unless you throw almost 600 rwhp to it.
10-07-2003, 11:07 AM
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Re: need new gears for my 12 bolt help the berings will keep the axle from moving around. i can almost promise you that your bering races are out of round from the axle moving.
10-07-2003, 11:40 AM
#5
Re: need new gears for my 12 bolt help
the berings will keep the axle from moving around. i can almost promise you that your bering races are out of round from the axle moving.
10-07-2003, 12:01 PM
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Re: need new gears for my 12 bolt help mine is the same way. it was the axle berings that cause alot of problem. strange changed over to the ntn style berings that moser uses and that seemed to help alot, but then this weekend i beat on it good and it sounds worse than ever.
also, if you have a crush sleve in there, that messes up the backlash and pinion depth.
mine has 5000 miles and have had it rebuilt 3 times and now going into it a 4th time.
2500 dollar 10 bolt!
also, if you have a crush sleve in there, that messes up the backlash and pinion depth.
mine has 5000 miles and have had it rebuilt 3 times and now going into it a 4th time.
2500 dollar 10 bolt!
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10-07-2003, 12:31 PM
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Re: need new gears for my 12 bolt help everyone i know that has one in a m6 car has these problems. some have had the retro fit done and they are better, but they are only running low 400rwhp so they dont seem to get pushed out of whack again.
mine was stone silent until i ran it this past weekend for the 6 passes that i made.
i know some gear whine is part of it, but this is crazy!
mine was stone silent until i ran it this past weekend for the 6 passes that i made.
i know some gear whine is part of it, but this is crazy!
10-07-2003, 12:37 PM
#11
Re: need new gears for my 12 bolt help I'm going to e-mail billingsly racing thats were I got the rear from and probably strange to and see if I can get some info about this. A $2600 rearend that cant handle over 400rwhp is total BS if this cant be fixed I dont know what the hell Im going to do 
I sent them both an e-mail and a link to this thread I will post what ever info I get.
10-08-2003, 09:27 AM
#14
Re: need new gears for my 12 bolt help Well strange e-mailed me back and told me to put the car on jack standes and use a stethscope and see if I can figure out exactly were the noise is coming from. I dought I will hear a dam thing with my exaust.
10-08-2003, 10:18 AM
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Re: need new gears for my 12 bolt help hahahah, how about you throw some magic dust on the floor and do the secret 12 bolt dance. the ****** noise is from the rear! they sell the rear as a whole piece!
10-08-2003, 10:46 AM
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Re: need new gears for my 12 bolt help im gonna go out on a limb and say that its all of the above. the races get out of round and cause the axles to move which cause the posi to moved some and then messes up the gears and then metal dust gets in everything which screws everything up that isnt already fukked.
10-16-2003, 12:46 AM
#19
Re: need new gears for my 12 bolt help As said many times before,it is all about the setup.My strange was dead silent when I got it with 3.73 gears.(over 79 passes)I then switched in 4.11's and got whine,reset them and whine was less,did it again and the whine was gone.Found out the gear markings are never right to use on setup.Each time I set them wear pattern looked perfect to me.
So as I found out the long way is if they are setup right you will never have noise.If they are off just a little (.002)they will end up screaming.
For the record I just replaced my gears again because of a screwed pinion bearing and I even have whine on accel.I'll live with it since I know backlash is set tight(.006)and I'm sick of taking it apart.This winter the car will get 4.30 or 4.56's anyways.
So as I found out the long way is if they are setup right you will never have noise.If they are off just a little (.002)they will end up screaming.
For the record I just replaced my gears again because of a screwed pinion bearing and I even have whine on accel.I'll live with it since I know backlash is set tight(.006)and I'm sick of taking it apart.This winter the car will get 4.30 or 4.56's anyways.
10-16-2003, 03:31 PM
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Re: need new gears for my 12 bolt help the guy that set mine up has done many many rears and has all the right tools to set the depth and backlash, and they are quiet till i spray it, then it all goes to hell.