How do I keep exploding Diffs?!

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Jan 19, 2012 | 08:12 PM

Roger Z06

Thread Starter

Drifting

Joined: Feb 2008

Posts: 1,952

Likes: 1

From: Waveland MS

How do I keep exploding Diffs?!

Exploded my stage 4 DTE, with the Diff brace... cracked it right down the middle. I blew it up a while back, same kinda crack in the case but I thought it was because I didn't have a diff brace. Well apparently the diff brace doesn't matter (unless it was loosened up) because that damn case cracked again when I tried launching my car at the track...

I haven't pulled it apart, been working on my stock vette so I can drive it daily... This is what it looked like the first time the diff exploded.

I was thinking about getting a case, rebuilding this one... or getting a c6z rear diff... any experience or knowledge to help me out?

Jan 19, 2012 | 08:24 PM

RMS-MAN

Burning Brakes

Joined: Feb 2004

Posts: 1,130

Likes: 0

From: Camarillo/Oxnard CA

You are traveling down the road many of us have already been down.

TR6060/C6Z Diff conversion and be done with it.
or
Built A4/Stall Conversion if u want to drag with your eyes closed.

Both will save you from creating more scrap metal.

Jan 19, 2012 | 08:27 PM

SilentFright

Drifting

Joined: May 2006

Posts: 1,871

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From: Arlington Texas, originally from San Angelo, TX

The C5 trans/diff case structural integrity (as a whole) is for sh*t (even with a or all braces installed). The pinion support is mounted to an incredibly weak component (aka: the gay C5 diff case; 3-rib, 1-rib doesn't really matter). Someone should really design an externally stabilized pinion support system that maybe ties into the DTE/ECS brace (it would replace the entire pinion access cover). The instantaneous shock produced by a high RPM manual trans launch (w/ a sticky tire) will cause the diff case to flex at the trans mounting junction; which then causes the pinion assembly to pitch with the mainshaft. This ends in the pinion binding on the ring gear and POW! There goes your stage 5000 C5-based drivetrain (usually takes out your mainshaft when everything grenades). The remedy for most manual trans guys would be: TR6060 & C6Z/ZR1 diff, but if you are a dedicated drag racer you might look into going auto like Joshua mentioned above and save yourself a ton of trouble.

ECS trans brace & PFADT diff brace installed

Last edited by SilentFright; Jan 21, 2012 at 04:57 PM.

Jan 20, 2012 | 09:30 AM

Roger Z06

Thread Starter

Drifting

Joined: Feb 2008

Posts: 1,952

Likes: 1

From: Waveland MS

Appreciate it guys, how much do you think that stage 4 would be worth rebuilt considering all the hard parts are still peachy?

Jan 20, 2012 | 11:22 AM

schnellTTZ06

Instructor

Joined: Oct 2006

Posts: 122

Likes: 0

From: Georgia

Man, that sucks. What kind of power you putting down? What were your 60 foots prior to this?

I was thinking about getting that brace but if it doesnt make a difference then I guess I will hold off.

Jan 20, 2012 | 01:44 PM

0tom01ss

Former Vendor

Joined: Aug 2009

Posts: 1,184

Likes: 1

From: delware county pa

yank does make a billet case . i saw the post awhile bac

Jan 20, 2012 | 03:14 PM

bumble-z

Le Mans Master

Joined: May 2007

Posts: 5,393

Likes: 17

From: Belleville Mich.

Quote:

Originally Posted by Roger Z06

Appreciate it guys, how much do you think that stage 4 would be worth rebuilt considering all the hard parts are still peachy?

You would be better off going with Silent Freight's suggestion in regards to the TR6060 & C/6 Z/ZR1 diff.
Then you should be able to put those Hoosiers to good work w/out carnage.
Good luck.