Xona Rotor (Forced Performance/Tial)

[HawkeyeGeoff]

All,

I didn't find anything about this on MSF yet, but it's definitely worth noting.

So Forced Performance and Tial have banded together to make Xona Rotor. It's pretty much FP's next generation of compressor wheels (HTZ) w/ a new badass CHRA housing.

Xona Rotor - Home

They have new ball bearing technology in them, which, I quote:
"Xona Rotor has implemented a proprietary variable-preload angular contact ball bearing system to its XR product line. By providing increased preload when needed and less when it isn’t, bearing life is extended.

Thrust, or axial, loading occurs in a turbocharger when the pressures acting on the turbine and compressor wheels are unbalanced. The thrust load is directed through the turbine shaft and applied to one row of balls in the bearing. To maintain contact of the unloaded row of balls to the races, preload is required. Insufficient preload can cause the unloaded row of balls to slide and skid on their respective races, generating fretting wear on the races that results in reduced life. Excessive preload, on the other hand, accelerates wear and generates heat.

The two most common methods to generate preload in a bearing are via mechanical means or by spring force. The mechanical method requires very tight axial tolerances to be held between the bearing’s inner races and opposing outer races. To maintain consistent preload, a mechanical preload system also relies on materials of equal coefficient of thermal expansion and uniform operating temperatures across the entire bearing system.

Accordingly, the extreme temperature excursions inherent to a turbocharger present a challenging operating environment for a mechanically-preloaded ball bearing system. The inner bearing race is typically press-fit to the turbine shaft and runs hotter than the outer race, which is thermally decoupled and more directly bathed in cooling oil. Even with a water-cooled bearing housing, the temperature gradient between the outer and inner bearing races can be hundreds of degrees Fahrenheit. Turbocharger applications also present a significant axial temperature gradient along the bearing’s length due to the difference in operating temperature between the turbine and compressor. These temperature differentials will not allow optimum preload to be maintained for all operating conditions . Compared to a mechanical preload system, a spring-based system can maintain a more consistent preload across a wider range of temperatures, but provides lower system stiffness.

These conventional approaches to applying preload can only be optimized for a single design point. In all other cases they are either employing insufficient or excessive preload.

Xona Rotor’s variable-preload system addresses the limitations of conventional bearing systems. It harnesses the oil pressure delivered to the bearing housing to selectively apply preload to the rotating group as needed . It compensates for the variations in preload induced by thermal expansion and can vary preload as a function of rotational speed . This patented system is exclusive to Xona Rotor . Unlike some ball bearing turbochargers, Xona Rotor XR turbochargers also use the oil to hydraulically damp shaft motions that would otherwise compromise bearing life. The oil also damps axial motions, a feature exclusive to Xona Rotor."

I just bought a XR6156 (equivalent to an HTA3076, now HTZ3076) for $1800 shipped from them through a program they're running right now. It's a "Name your own price sale". I've attached the flyer for it to this post. I assume it's to promote their turbos and I couldn't NOT take advantage of it. I was going to buy a HTA3076 anyway and I ended up saving a significant amount of money since I needed the Tial hotside for my setup.

Just thought a few people might benefit from seeing this and checking out their turbos; I haven't seen anything but good things from this company so far.

Be on the lookout for my build thread in the future...I think I should still be able to get about 550whp out of this turbo and have much, much better transient response and street ability.

Cheers.

[fivefingerdeathpunch]

I'm glad you got a good deal and were able to pull the trigger on this! Excited to see how FP compares to the new gen 2 pte offerings. PTE seems to be all the rage on this platform now.

Subbed for results!

[HawkeyeGeoff]

Originally Posted by fivefingerdeathpunch I'm glad you got a good deal and were able to pull the trigger on this! Excited to see how FP compares to the new gen 2 pte offerings. PTE seems to be all the rage on this platform now. Subbed for results!

You better believe ill be posting about it. Ill be able to max this bitch out.

Sent while granny shifting, not doubling clutching like I should

[fivefingerdeathpunch]

Originally Posted by HawkeyeGeoff You better believe ill be posting about it. Ill be able to max this bitch out. Sent while granny shifting, not doubling clutching like I should

Hey man any updates for us? PICTAAAARRSSS!!

[HawkeyeGeoff]

Originally Posted by fivefingerdeathpunch Hey man any updates for us? PICTAAAARRSSS!!

Does the pope shit in the woods? As soon as the car comes out of storage (weather related) this is getting installed and we are going to let er' rip! @rfinkle2;



Sent from my SM-N910V using Tapatalk

[fivefingerdeathpunch]

Damn that's beautiful. I wish I could trade the 6262 I have sitting around for one. Wouldn't have to swap manifold flanges either

[maisonvi]

Originally Posted by fivefingerdeathpunch Damn that's beautiful. I wish I could trade the 6262 I have sitting around for one. Wouldn't have to swap manifold flanges either

Precision and Tial V-band arent the same, so you would have to switch manifold flanges.

Edit: never mind your sig says HTA3076