Vortech V2 Bearing Information
So I've been digging for info on the bearings to do a rebuild on my V2 E-trim and enable me to run a smaller pulley. I contacted 928 Motorsports to ask about the bearings they use. Rightly so, they refused to disclose specific info. I had asked if they were ABEC7 rated and what rpm's they would tollerate. They told me that ABEC7 tollerances were too tight for the application since the heat induced would cause the bearings to expand and everything they have is ABEC5. So... if ABEC7 bearings are used (as some recommend) then they must be ceramic balls to combat the expansion problem... right?
Here is a list of the bearing info I've dug up... LINK
Now on to the main question I now have... most of the bearings recommended on various posts in various threads indicate 15˚ cut angular bearings. One (Fafnir) indicates a 20˚ cut. Most all of these ABEC7 ceramic bearings I've found for sale are well over $400/ea.!! Superchargerrebuild.com has a kit for ~$450 shipped. The seals and low speed bearings are pretty cheap. I was able to find a set of high speed ceramic bearings that meet all the specs, but have a 25˚ cut. I'm curious if this is going to cause problems in the Vortech application. The thrust from the helical cut V2 is my concern. I can't find any info about the angle of thrust from Vortech documentation, so to me everything is hearsay. That said, would adding 10˚ to the bearing thrust angle cut cause problems if it really is supposed to be 15˚?
I'm keenly interested, b/c I found a source for <$100/bearing ceramic and all but the angle match most of the recommended bearing specs.
oh, and I searched and searched and searched. :laugh: