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I've read in places about upgrading the bearings to add rpm capability, and also about custom impellers to affect cfm as well as a custom fitment possibly being offered by Vortech themselves to all but eliminate gap between the impeller and housing.
Is there any one stop shopping for this? What are the real benefits for the expense? I'm trying to keep my build a street car that can put the hammer down without going up to a Ysi. Also trying to keep it self contained without comingling oil.
Good stuff. I had found 928 Motorsports, but they are almost non-existent currently due to lack of staffing and can't even respond or communicate effectively at present.
The impeller seems a common sense piece. Especially since I'm running a stroker and a 10% overdrive hub anyway.
What I'd like to learn is why the self-oiled units, even with upgraded bearings, say to stay at OEM rpm limits. I'd love to extend the rpm range. But I do not want to share common oil between the engine and blower if one goes. I don't see what having a shared feed would do to benefit the head unit and allow more rpm.
Good stuff. I had found 928 Motorsports, but they are almost non-existent currently due to lack of staffing and can't even respond or communicate effectively at present.
The impeller seems a common sense piece. Especially since I'm running a stroker and a 10% overdrive hub anyway.
What I'd like to learn is why the self-oiled units, even with upgraded bearings, say to stay at OEM rpm limits. I'd love to extend the rpm range. But I do not want to share common oil between the engine and blower if one goes. I don't see what having a shared feed would do to benefit the head unit and allow more rpm.
even with the billet impeller over speeding the blower is no bueno It will get you back to needing new bearing and impeller quick
turbos and other cent superchargers (like the rotex) offer different engineering.
With these blowers, size for the cfm and power you need and pulley to stay below the redline of the blower
Good stuff. I had found 928 Motorsports, but they are almost non-existent currently due to lack of staffing and can't even respond or communicate effectively at present.
The impeller seems a common sense piece. Especially since I'm running a stroker and a 10% overdrive hub anyway.
What I'd like to learn is why the self-oiled units, even with upgraded bearings, say to stay at OEM rpm limits. I'd love to extend the rpm range. But I do not want to share common oil between the engine and blower if one goes. I don't see what having a shared feed would do to benefit the head unit and allow more rpm.
The oil-fed units get a consistent oil feed at consistent temperatures. Elevated speeds don't churn the oil, causing foaming, which eliminates the lubricating and cooling ability of the oil. Regardless of the bearings, I would venture a guess that their calculations are based on the speed where the oil gets foamed up more than anything else. I've never had concerns about sharing oil with the blower. I realize that the blower might fail and dump its contents into the oil pan but that's never been any real concern for me. When the bearings have failed in the past, I've not noticed much trash in the filter over it. The noise coming from the blower has been remarkable enough for me to know it needs to be removed and rebuilt. Even if the gears happened to fail and drop larger particles down the drain, the pickup screen limits the particle size allowed back into the pump and then it'll have to go through the filter before it's able to get into the bearings so I've never seen any need be concerned over it.
I had my V2Si rebuilt by Vortech last month. I wanted them to upgrade the impeller and volute to make it closer to a Ti. Like you, I’m not ready for a Ysi. And I asked about ceramic bearings to get a little more speed out of it. They talked me out of it all. Ceramic bearings are hard but brittle and take out just about everything inside the blower if they fail (according to Vortech). And the cost to replace the impeller/volute was over $1k in addition to the $400 rebuild I already paid for. He recommended their exchange program and the deal he offered, it really wouldn’t make sense to upgrade my current one any further.