Built rb25 concerns about unbalanced crank pulley

[93slicktoptt]

Hi I have a built rb25 and I purchased a unbalanced billet crank pulley my concerns are is their a likely chance of oilpump or bearing failure?

[240z4u]

The problem isn't that it's unbalanced the problem is that it's not a harmonic dampener. Yes, you are increasing the odds of damage. If I ever bothered to build a good motor (which I likely never will) I would run either a stock unit or something that's appropriate. I think ATI makes one. Skimping on that after doing a rebuild wouldn't be a smart move IMO.

[93slicktoptt]

Sorry I meant undampened * but yea I'm probably gonna get a good ati pulley. Just wanted to see if anyone went the undampened route with a balanced motor.

[Coolwhip]

We sell Ross Tuffbond Harmonic Balancers for all the RB applications good to 1500hp and 12k RPM. Lifetime warranted from the manufacturer:

http://rawbrokerage.com/Ross-Metal-Jack ... 306201.htm

Shoot me an email with what you have done and what accessories you are running and we can figure out which will best suit your motor.