LS7 dry sump oil cooler
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From: Grew up in Charleston, SC live in Moncure, NC
LS7 dry sump oil cooler So, I am installing an LS7 with the original 2 stage dry sump pump system. I will be using a C&R Racing radiator (very nice piece btw) with an integrated oil cooler. Do I plumb the oil cooler on the pressure side or the return side. I have read arguments for both.
Also, new to this dry sump stuff. Is stage 2 defined simply as one pressure pump and one return (scavenge) pump. And stage 3 as one pressure pump and two returns and stage 4 as one pressure and 3 returns?
This is mainly a street car. It would seem that a stage 2 would be sufficient. Also, wouldn't adding extra scavenging pumps need to coordinate with the pressure side to insure that they were not running the pan dry trying to feed the pressure side?
Thanks,
r.
Also, new to this dry sump stuff. Is stage 2 defined simply as one pressure pump and one return (scavenge) pump. And stage 3 as one pressure pump and two returns and stage 4 as one pressure and 3 returns?
This is mainly a street car. It would seem that a stage 2 would be sufficient. Also, wouldn't adding extra scavenging pumps need to coordinate with the pressure side to insure that they were not running the pan dry trying to feed the pressure side?
Thanks,
r.
The whole point of a dry sump is to suck the pan "dry". The pressure stage pulls oil from the remote oil tank and pumps it through the engine, which drains back to the pan. The remaining "stages" are scavenge stages, which pull oil from the several locations in the pan and pump it to the remote oil tank.
Usually, multiple scavenge stages on the oil pan and heads are implemented when someone wants or needs to pull vacuum on the crank case, which aids in ring seal and practically eliminates windage issues.
As far as plumbing the oil cooler, I believe it's plumbs from a fitting that bolts to the oil filter location on the block.
Usually, multiple scavenge stages on the oil pan and heads are implemented when someone wants or needs to pull vacuum on the crank case, which aids in ring seal and practically eliminates windage issues.
As far as plumbing the oil cooler, I believe it's plumbs from a fitting that bolts to the oil filter location on the block.
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From: Grew up in Charleston, SC live in Moncure, NC
"As far as plumbing the oil cooler, I believe it's plumbs from a fitting that bolts to the oil filter location on the block."
Thanks for your reply. I understand where the hoses hook up for the oil cooler. My question was about whether to "cool" the oil as it comes out of the engine (return side) or just before it goes back into the engine (pressure side).
I didn't explain my last question very well either. I know the idea is to keep the oil flowing and not sitting in the oil pan. It would seem that there is a point where more scavenging pumps is unnecessary and just robbing power.
Thanks for your reply. I understand where the hoses hook up for the oil cooler. My question was about whether to "cool" the oil as it comes out of the engine (return side) or just before it goes back into the engine (pressure side).
I didn't explain my last question very well either. I know the idea is to keep the oil flowing and not sitting in the oil pan. It would seem that there is a point where more scavenging pumps is unnecessary and just robbing power.
Last edited by lowcountry; Sep 9, 2015 at 05:18 AM.
"As far as plumbing the oil cooler, I believe it's plumbs from a fitting that bolts to the oil filter location on the block."
Thanks for your reply. I understand where the hoses hook up for the oil cooler. My question was about whether to "cool" the oil as it comes out of the engine (return side) or just before it goes back into the engine (pressure side).
I didn't explain my last question very well either. I know the idea is to keep the oil flowing and not sitting in the oil pan. It would seem that there is a point where more scavenging pumps is unnecessary and just robbing power.
Thanks for your reply. I understand where the hoses hook up for the oil cooler. My question was about whether to "cool" the oil as it comes out of the engine (return side) or just before it goes back into the engine (pressure side).
I didn't explain my last question very well either. I know the idea is to keep the oil flowing and not sitting in the oil pan. It would seem that there is a point where more scavenging pumps is unnecessary and just robbing power.
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From: Grew up in Charleston, SC live in Moncure, NC
That's usually something the dry sump manufacturer can help with since it will be dependent on the application. At some point, the scavenge stages create a vacuum in the crankcase, which can help reduce parasitic losses and increase power output. I'm sure there's a point of diminishing return though.
