Oil pumps again...

Bakerlite said

First of all, the actual question was, "does a HV / HP use more engine HP"?.
Not "will a HV / HP pump free up HP by masking a mechanical issue in the engine".. so your post above is irrelevant..

That's why I said earlier about bench testing the pump, because the conditions are controlled and repeatable without having to factor in other elements/ issues from an engine that may skew the results..

Obviously if your seeing an increase in HP when adding more load via a HP / HV pump, then it's not some magic in the pump. Something else is going on..Maybe it's in the engine, maybe it's the test procedure, etc..
What do you do next??? Identify the actual issue? Fix/modify that issue and then reduce pump pressure/drag to free up even more HP, than just the band aid pump solution with sky high running pressures?? I'll let you work that one out on your own..
So obviously saying it's an "old wives tail" and then applying it to every situation is just stupid....and it's why you're a pudnocker.

Click to expand...

My test is only irrelevant because it doesn’t fit your narrative.

I’ll ask again, expecting the same answer. Have you personally tested oil pumps on a dyno? If you have, I’d love to hear your results. If not (which is exactly what I expect) then all you have is your ill founded notions.

To correct some of the bullshit above, one fix would have been roller cam bearings. Then I wouldn’t have had an issue with the valve spring loads showing the cam into the bearings, especially at low engine speeds. Of course, you’ve evidently built an engine with solid lifter over the nose spring loads as your seat pressure. In other words, I was running as much on the seat as a SFT has over the nose. That’s what it takes with a 59 degree LBA and making power at 8500.

As far as the rockers grabbing the shafts, it’s the same issue. I could have switched to a needle bearing rocker, but that would have required pushrod oiling and I’m against that in most cases.

Your evident lack of experience building a high rpm, high output (2 hp/cid or better) shows here clearly.

Obviously your mechanics license didn’t cover that.

Now go away. You add nothing to the thread.