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Thread: Diff Cover Drain

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  1. #1
    Senior Member Carroll Shelby
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    Quote Originally Posted by Pranav View Post
    What is the failure mode for gm rear ends in CMC?

    My first one went simply because the ring gear boots were loose, and even then it was fine except for the broken teeth from loose bolts flying around.

    I chipped a ring tooth on the second one but I had issues with that build with a loose pinion nut, and later running it all setup wrong and super tight when we took my rear end apart for no reason at all at the track.

    I think just a properly setup rear end with a crush sleeve eliminator and heavy oil is all that's needed. I run 85w-140.

    That fancy diff cover just adds support to the main caps. I don't believe we're drag racer blowing apart rear end housing are we?
    Wheel hop killed Paul's 10 bolt, because the torque arm bolts were finger tight, wheel hop is savage on parts.
    Tyler Gardner
    CMC #13 2015-2017
    SM #013 2018
    www.dfwmustangs.net

  2. #2
    Senior Member Carroll Shelby
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    Quote Originally Posted by mach1 View Post
    Wheel hop killed Paul's 10 bolt, because the torque arm bolts were finger tight, wheel hop is savage on parts.
    Oh yeah, I only learned how to start heel toe-ing last summer. My first rear end lived through 5 years of that hop life

  3. #3
    Senior Member Carroll Shelby
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    I'm looking at 4th gens in Texas in general, and I'm seeing all kinds of issues that prevent each particular driver/car combo from running up front. Be it breaking things unexpectedly, reliability, or the driver just not doing enough testing/setup time to win.

    I'm not trying to put my fellow 4th gen drivers down, but spend an afternoon observing what the Fox guys are doing vs the 4th gen guys in regards to what they're focused on (or even present) on Fridays before the race, and you may see my point. I feel like the combination of new/fresh talent on the Mustang side, the departure of Proctor/Landrum, and the timing of the rule changes all happening at the same time seems to perpetuate the impression that there is an apparent rule bias against 4th gens.

    The RMR guys are saying mustangs are getting their butts kicked by Camaros up there.

    Yeah the Mustangs have a weight advantage, but they have shit aero and suspension.

    Francis has been able to put his car far up there from time to time when it has run right and it (no offense) has the least fanciest gear of the others. Tyler hopped in Sean's car (3rd gen, but still) and was able to put it up there at COTA after working on setup.

    My car's been running like a swiss watch and has all of the right parts/numbers to win, but I haven't been put it together as a driver to get it done myself.

    At this point performance wise I'm (by choice) weighing 50lbs over post race (I have more than enough extra gas and coolsuit capacity to take it down to zero if needed), and getting closer and closer to 260/310 with the new motor after making tweaks. All that's needed is setup time and a good driver.

    We should put Tyler in my car and see how far up he can place vs the big evil Fox mafia.
    Last edited by Pranav; 06-27-2018 at 05:27 PM.

  4. #4
    Senior Member Carroll Shelby
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    Also quick show of hands, who is going to DEs, test days, and other racing events outside of the NASA calendar? How many of you guys are changing alignment settings and spring rates between races?

    Is your car showing up to the track Friday completely ready to go?

    If you're answering no to some of these, go see if the guys in front of you answered less "NOs" than you, maybe fix that too?
    Last edited by Pranav; 06-27-2018 at 08:43 PM.

  5. #5
    Senior Member Carroll Shelby
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    Quote Originally Posted by Pranav View Post

    We should put Tyler in my car and see how far up he can place vs the big evil Fox mafia.
    I would love to run a 4th gen for nats , thought about building one but don't have time
    Tyler Gardner
    CMC #13 2015-2017
    SM #013 2018
    www.dfwmustangs.net

  6. #6
    Senior Member Grass-Passer
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    Quote Originally Posted by Pranav View Post
    I'm looking at 4th gens in Texas in general, and I'm seeing all kinds of issues that prevent each particular driver/car combo from running up front. Be it breaking things unexpectedly, reliability, or the driver just not doing enough testing/setup time to win.

    I'm not trying to put my fellow 4th gen drivers down, but spend an afternoon observing what the Fox guys are doing vs the 4th gen guys in regards to what they're focused on (or even present) on Fridays before the race, and you may see my point. I feel like the combination of new/fresh talent on the Mustang side, the departure of Proctor/Landrum, and the timing of the rule changes all happening at the same time seems to perpetuate the impression that there is an apparent rule bias against 4th gens.

    The RMR guys are saying mustangs are getting their butts kicked by Camaros up there.

    Yeah the Mustangs have a weight advantage, but they have shit aero and suspension.

    Francis has been able to put his car far up there from time to time when it has run right and it (no offense) has the least fanciest gear of the others. Tyler hopped in Sean's car (3rd gen, but still) and was able to put it up there at COTA after working on setup.

    My car's been running like a swiss watch and has all of the right parts/numbers to win, but I haven't been put it together as a driver to get it done myself.

    At this point performance wise I'm (by choice) weighing 50lbs over post race (I have more than enough extra gas and coolsuit capacity to take it down to zero if needed), and getting closer and closer to 260/310 with the new motor after making tweaks. All that's needed is setup time and a good driver.

    We should put Tyler in my car and see how far up he can place vs the big evil Fox mafia.
    Honestly I think Bryan Curtis showed all of us at Hallett that a well set up 4th gen is as fast as the foxes. He was absolutely favored to win going into the championship race. As I came out early due to old ass foxbody issues I don't know how the race ended like it did...but his car appeared well sorted and fast all weekend...
    Last edited by drecords; 06-29-2018 at 10:54 AM.
    Daniel Records
    CMC # 34

  7. #7
    Senior Member Carroll Shelby Supercharged111's Avatar
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    Bryan choked on the last lap, he had it locked down otherwise.
    RM CMC Director

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