Quote:

I wouldn't put a high volume pump on a 440 that has tight bearing cleances. You'll just end up with too much oil pressure. If you put a soft relief valve spring in it then you just recirculate a bunch of oil inside the pump.

I almost always recommend a standard volume pump. If the std volume pump can't make 60 psi at 6000 rpm then put the high volume pump on there. I don't think I've ever seen an engine where the std volume pump couldn't hit 60 psi though.



I'm glad this thinking is starting to get around.

MANY think a HV pump provides Better oiling, when it does nothing of the sort.