[Bentfocus77]

I bought these oil pump gears from the UK. Now poeple are telling me even the billet gears shatter. First I've ever heard of this. I'm building a 450+hp blacktop..

 

[amc49]

Look at how much of the rotation in degrees is not solidly supported by the casting that holds the gears............past a certain speed the gears flop around enough to gouge into each other to seize momentarily and then they break.

What I think happens anyway.............gear material past a point is not the problem there, too much room for parts to deflect out of plane and then instant destruction.