Jump to content
  • Welcome to SAU Community

    Welcome to SAU Community, like most online communities you must register to view or post in our community, but don't worry this is a simple free process that requires minimal information for you to signup. Be apart of SAU Community by signing in or creating an account.

    • Start new topics and reply to others
    • Subscribe to topics and forums to get email updates
    • Get your own profile page, build reputation and make new friends
    • Send personal messages to other members.
    • See fewer ads!

    Consider joining our newsletter for the latest content updates

    Click here to register


ItzGenX

Ross Balancer Complete Failure

Recommended Posts

Anyone ever hear of the Ross Tuffbond (Omega) balancers failing? Mine just completely came apart this weekend while powering down the highway. I was running on wastegate spring pressure of 6psi @ 5k RPM when it happened. The balancer has less than 3k miles on it with only a few high RPM pulls to 8500 of the 9th redline.

 

I am in the warranty process where I have to send this thing back to Ross for inspection. However, I would love to hear thoughts and stories regarding balancer failures of this caliber.  

My engine stalled the second it happened since I use the trigger kit.  I guess this kind of helps prevent further collateral damage, so there's a silver lining.  I run all of the standard accessories that belong to the engine; alternator, water pump, ac, power steering.  The only thing I can think of is I can feel slightly more vibration in the car when cruising with ac versus it off.  Possibly the ac compressor compression strokes in it transferring too much force back into the balancer and eventually making the bolts sheer like a constant impact gun on it?  The only things that can transfer load into the outer sleeve are the alternator, water pump, and ac. My belts weren't too tight either. I usually go easy on belt tension in fear of ruining front main bearings on engines.

 

I run a Brian Crower 2.8L fully counterweighted bottom end, and the engine is solidly mounted to the car.

 

See photos below:

 

 

6C973632-0313-4661-A11A-4464C34CD0CC.jpeg

AA252FDE-62D1-472F-A2B9-70AE22F53439.jpeg

BB7C2A33-6237-4DBE-ABFD-304701FED262.jpeg

B33F09AD-7309-4F5D-95ED-CC526FACEA91.jpeg

2D2870C1-0A9E-4CE8-A8C3-0A369D455690.jpeg

Edited by ItzGenX

Share this post


Link to post
Share on other sites

Bolts either over torqued to yield, or they came loose and the clearance was enough for the shell to oscillate on the bolts to the point of fatigue.

I've seen an ATI1000 balancer do the same thing.

  • Like 1

Share this post


Link to post
Share on other sites

The sides of the bolt threads and countersunk holes do not show side thrust damage from oscillations. If it was, it didn't happen for long enough to show. I guess it was a bad set of bolts or torqued beyond it's yield point.

 

I never touched the inner bolts at all. The only bolts I touched were on the outer ring to install the reluctor wheel.  

 

Seems to me there needs to be either more than 6 inner bolts, change to larger diameter bolts, or use a stronger bolt.

 

So this even happens to other balancers? Wow, was I surprised when it let go. I was thinking "please don't be a hole in the block from 6psi...."

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.




×
×
  • Create New...