Jet pump, For Scavange on remote turbo?
Thread Starter
TECH Senior Member
iTrader: (25)
Joined: Jul 2004
Posts: 8,929
Likes: 2
From: Sutherlin OR
Jet pump, For Scavange on remote turbo? What do you guys think about using an oil jet, or venturi style of oil pump for remote mounted turbos like the STS kits? Do you think the stock engine oil pump would have enough flow to power it. How about a HV/HP pump. You can see what I'm talking about at www.mcmaster.com pg 291 of there online catalog. Its just an idea my dad came up with, he says they use them in larger applications at the power plant he works at. It would never ware out or fail like an electric pump, and it would change it's flow right along with oil pressure. It would let the turbo be oiled under pressure, drain off, and then be scavenge and pushed back to the motor. The smallest one they have has a 3/8 inlet with a 3/4 suction and out let. Check it out and then me know your thoughts.
TECH Fanatic
Joined: Nov 2001
Posts: 1,190
Likes: 0
From: Las Cruces, NM
Originally Posted by kbracing96
What do you guys think about using an oil jet, or venturi style of oil pump for remote mounted turbos like the STS kits? Do you think the stock engine oil pump would have enough flow to power it. How about a HV/HP pump. You can see what I'm talking about at www.mcmaster.com pg 291 of there online catalog. Its just an idea my dad came up with, he says they use them in larger applications at the power plant he works at. It would never ware out or fail like an electric pump, and it would change it's flow right along with oil pressure. It would let the turbo be oiled under pressure, drain off, and then be scavenge and pushed back to the motor. The smallest one they have has a 3/8 inlet with a 3/4 suction and out let. Check it out and then me know your thoughts.
The flowrate out of the smallest one is way to high for a automotive application. You are only going to need to move about 1 gpm from the turbo drain back into the pan. You would need a pretty high flowrate to operate the thing, plus whats going to the turbo. In theory it would work but gonna need a lot bigger engine oil pump, plus a lot bigger oil reservior. You would be better off going with an reliable electric pump like the weldon 9200 or a belt driven oil/scavenge pump.
Gary
Thread Starter
TECH Senior Member
iTrader: (25)
Joined: Jul 2004
Posts: 8,929
Likes: 2
From: Sutherlin OR
Well, I was hoping for a little more feed back about this, since there are so many people talking about the STS turbos on here. I was thinking that the small pump on that site was a little to big, but I think I could build one about the right size out of brass fittings and some copper tubing from the hardware store, for like, 25 bucks or less. I was linking of splitting a -4 line and feeding the turbo with one side and the pump with the other and using the pressure diff from the jet pump to push the oil back to the motor. No electric pump to fail, and would let you oil the turbo and solve the gravity drain issue by sucking the oil out with the jet pump. I think oil demand for this setup wouldn't be too much on the engine oil pump, because the oil need for both the jet pump and the turbo wouldn't be that much. My biggest concern would be how well the pump would work with cold oil. Any thoughts on this?
TECH Fanatic
Joined: Nov 2001
Posts: 1,190
Likes: 0
From: Las Cruces, NM
Originally Posted by kbracing96
Well, I was hoping for a little more feed back about this, since there are so many people talking about the STS turbos on here. I was thinking that the small pump on that site was a little to big, but I think I could build one about the right size out of brass fittings and some copper tubing from the hardware store, for like, 25 bucks or less. I was linking of splitting a -4 line and feeding the turbo with one side and the pump with the other and using the pressure diff from the jet pump to push the oil back to the motor. No electric pump to fail, and would let you oil the turbo and solve the gravity drain issue by sucking the oil out with the jet pump. I think oil demand for this setup wouldn't be too much on the engine oil pump, because the oil need for both the jet pump and the turbo wouldn't be that much. My biggest concern would be how well the pump would work with cold oil. Any thoughts on this?
Gary
