Quote Originally Posted by Itoldyouso View Post
That makes a lot of sense to me, Dave. The pressures inside that pump must have been pretty high to deform the diffuser plate like that and to tear it loose from the vanes. I bet that sucker was spinning at 5,000 rpms when I was going down the road at 3,000 crank speed............and I had been going that speed for 5 hours or so on the way up to Daytona.
Don
I think Dave's analysis is a good one, and I had not considered the increased temperatures that would be present with cavitation, and both the higher temps and the forces of cavitation would be working on the spot welds. Also, a difference for me is the only time my engine sees 3000rpm is if I'm playing, and then it's not holding there for extended periods since 3000rpm in 5th gear equates to about 105mph for me.