Few 12/9" questions
09-28-2011, 08:34 PM
#1
TECH Regular
Thread Starter
Few 12/9" questions been doing some digging on here as to what new unit would be the way to go 12blt/9". have a few questions. car lays down 700rwhp and is 95% street used and abused and will see the track maybe 3 times a year. no slicks just soft wide street tires (335), m6 trans
with the 12 people are makeing mention of noise after a few hard launches, is it just noisy? do they fail quicker? at very low MI?
cant see any yay/nah on the c clip option. I know haveing them eliminated is stronger but limits brake options. do they make a large difference in life of the unit?
every post on the 9" seems to make mention of power loss/ weight. was it noticeable? my car is super peaky and kinda a dog down low.
with the 12 people are makeing mention of noise after a few hard launches, is it just noisy? do they fail quicker? at very low MI?
cant see any yay/nah on the c clip option. I know haveing them eliminated is stronger but limits brake options. do they make a large difference in life of the unit?
every post on the 9" seems to make mention of power loss/ weight. was it noticeable? my car is super peaky and kinda a dog down low.
09-28-2011, 10:53 PM
#2
11 Second Club
iTrader: (8)
Join Date: Jan 2002
Location: SILSBEE TX
Posts: 1,782
Likes: 0
Received 0 Likes
on
0 Posts
"... people are makeing mention of noise after a few hard launches.."
I think this is caused by slack is gear mash as the crush sleeve gains slack after a few hard launches, I like to use a solid sleeve
Johnny
I think this is caused by slack is gear mash as the crush sleeve gains slack after a few hard launches, I like to use a solid sleeve
Johnny
09-28-2011, 11:03 PM
#3
See below
From my recollection it has to do with how 12 bolts are engineered. They were built by GM in the 60's and 70's with leaf springs, and four links in mind. The location of the pinion, and its support, or lack of, around resisting deflection isn't sufficient to resist high loads a torque arm places on the diff case.
09-30-2011, 05:25 PM
#4
http://shop.brutespeed.com/Brute-Spe...nformation.htm
I have a lot of info on it at the above link. I don't see you noticing any loss in power if you install a nine inch. Bob
I have a lot of info on it at the above link. I don't see you noticing any loss in power if you install a nine inch. Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
09-30-2011, 07:09 PM
#5
I have a 12 bolt. With a M6 I recommend you go to a 9" with anything over 500rwhp. I even twisted the 33 spline Moser axles.
I cut 1.48sec 60's and broke it twice. It dead hooks with 6500rpm dumps.
If you had an auto, then I would say no problem.
My MWC 9" is coming soon.
I cut 1.48sec 60's and broke it twice. It dead hooks with 6500rpm dumps.
If you had an auto, then I would say no problem.
My MWC 9" is coming soon.