Compression Ignition Addict
Join Date: Dec 2006
Location: Lockport IL
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it flows more than some twin pumps I had. Well they flowed a lot all over my engine.
Back on topic here the stealth pump pumps a higher volume but about the same PSI as a single stocker therefore putting the same stress on the oil. it is simple physics of fluid dynamics.
And I believe he was saying the stealth pump is less shearing than a twin pump setup. Two pump that equals 14 axial pistons. that is twice as many as stock, well duh.
Running 2 pumps is bad for numerous reasons. The reason our trucks chug and have that distinctive tone is because of dead spots in the oil pressure where the axial pistons are at top and bottom dead center. Now when you put 2 pumps together there is no way to time them and make them work good together. One setup might run smooth where as the other might run like dog poo.
Also when you run 2 pumps they heat up the oil twice as fast. And to further defeat the purpose of cool oil some dual pump makers like to run the IPR bleed off back into the HPOP reservoir. that sucks hot oil right back into the pumps.
Not to mention the lost power of the second pump. The stealth is the smoothest pump money can buy hands down. but most people dont need or want that amount of oil. The adrenaline will work just fine, and it has a lot of good components inside of it that allow it to run smoother and turn easier. And the swash plate is at a different angle other than 15-17. All I know is it is between 17 and 21 degrees.
This is not personal opinion it is fact this is serious hands on research through multiple vendors. I tried dual pumps on my truck went through 5 sets in 1000 miles. Never again. I read tons of documents from ford service manuals and navistar manuals as well. I also tore a pump apart to know exactly what axial pistons are and how they work.
Rant over I just dont want someone to be without a truck for 3 months like I was. Why spend 1800 on dual pumps when the stealth stage one is better and 1500. phew long one there.
2002 f250 BFT Edition