Accusumping the LS2 block
Accusumping the LS2 block Hi,
I would like to run the accusump directly into the LS2 oil galley.
I know this has been discussed, but there was not a definitive answer. What are the "proven" options? Is there a port on the passenger side of the engine (since my sump will be on the pass side)?
J
I would like to run the accusump directly into the LS2 oil galley.
I know this has been discussed, but there was not a definitive answer. What are the "proven" options? Is there a port on the passenger side of the engine (since my sump will be on the pass side)?
J
The best port is the rear drivers side low or the one at the back of the manifold. If you use the one in the back of the engine behind the intake, some blocks need the transfer port drilled larger to make the accusump work its best.
We sell a fitting that is stainless steel that connects factory LS oil port to -10 an if you need to make the connection.
Kurt
We sell a fitting that is stainless steel that connects factory LS oil port to -10 an if you need to make the connection.
Kurt
Originally Posted by 427
The best port is the rear drivers side low or the one at the back of the manifold. If you use the one in the back of the engine behind the intake, some blocks need the transfer port drilled larger to make the accusump work its best.
We sell a fitting that is stainless steel that connects factory LS oil port to -10 an if you need to make the connection.
Kurt
We sell a fitting that is stainless steel that connects factory LS oil port to -10 an if you need to make the connection.
Kurt
It looks a bit busy back there. It there a reason other than being perhaps closer to the Asump?
The forward port on the LS engine is unfiltered oil. The accusump is a piston with a o-ring around it running on a aluminum bore, so we try to keep filtered oil feeding the sump.
Kurt
Kurt
Originally Posted by 427
The forward port on the LS engine is unfiltered oil. The accusump is a piston with a o-ring around it running on a aluminum bore, so we try to keep filtered oil feeding the sump.
Kurt
Kurt
Thanks,
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Verdad Gallardo Am I missing something here:
the oil hole at the back oil pan is the one that goes into the center of the filter (outflow of the engine into filter). The oil hole in the front of the pan is the one that connects to the sides of the filter (inflow filtered oil into the engine).
Do I have this wrong? Oil flows into the center of the filter and out the sides.
I am using a Canton race pan, so I know the rear hole on the filter corresponds to the filter center.
the oil hole at the back oil pan is the one that goes into the center of the filter (outflow of the engine into filter). The oil hole in the front of the pan is the one that connects to the sides of the filter (inflow filtered oil into the engine).
Do I have this wrong? Oil flows into the center of the filter and out the sides.
I am using a Canton race pan, so I know the rear hole on the filter corresponds to the filter center.
Last edited by jtl12419; Mar 30, 2007 at 04:22 PM. Reason: unclear
Let me rephrase:
The hump in the block corresponding to the rear hole on top oil pan is the oil outflow.
The hump on the block corresponding to the front hole on top of the oil pan is the oil return from the filter.
These galleys look like cross themselves above the filtermount.
The hump in the block corresponding to the rear hole on top oil pan is the oil outflow.
The hump on the block corresponding to the front hole on top of the oil pan is the oil return from the filter.
These galleys look like cross themselves above the filtermount.
The rear oil port is the best location since it goes directly to the bearings and the Accusump does not have to force oil through the filter first.
Also, I prefer the rear most hole for the knock sensors (on both sides) since it provides better clearance from the headers avoiding burned wires...
Shirl Dickey
SDRE
Also, I prefer the rear most hole for the knock sensors (on both sides) since it provides better clearance from the headers avoiding burned wires...
Shirl Dickey
SDRE
Originally Posted by jtl12419
Am I missing something here:
the oil hole at the back oil pan is the one that goes into the center of the filter (outflow of the engine into filter). The oil hole in the front of the pan is the one that connects to the sides of the filter (inflow filtered oil into the engine).
Do I have this wrong? Oil flows into the center of the filter and out the sides.
I am using a Canton race pan, so I know the rear hole on the filter corresponds to the filter center.
the oil hole at the back oil pan is the one that goes into the center of the filter (outflow of the engine into filter). The oil hole in the front of the pan is the one that connects to the sides of the filter (inflow filtered oil into the engine).
Do I have this wrong? Oil flows into the center of the filter and out the sides.
I am using a Canton race pan, so I know the rear hole on the filter corresponds to the filter center.
Oil ALWAYS travels from the outside of the filter to the inside and up.
TECH Resident
Joined: Aug 2004
Posts: 875
Likes: 2
From: Portland Oregon
The instructions that came with my 3qt Accusump said to plug it in where the oil gauge is. So I took the sender out and put it in the back, and put the pressure sender on the front drivers side. If there is any loss of pressure, it is feeding directly into the bearings, without going all the way down the side of the motor, and through the filter. Works great for getting 20 lbs of pressure before a cold start. Yes, the hole in the block below the threads is small, I drilled it out when I was building the motor.
I belive if your going in the back of the block and you have a stock pan your going to have to notch for clearance.I would reccomend the moroso oil pan that holds 8qts not 6qrts that moroso has listed.Plus the pan is a rear sump not the center like a stock pan.
TECH Resident
Joined: Aug 2004
Posts: 875
Likes: 2
From: Portland Oregon
An accusump is for road racing or any performance application where the oil pickup may run out of oil due to cornering force, or sustained G forces. It's just a pressurized cylinder that holds 2-3 quarts of oil. When the oil pressure gets low, the sump pressurizes the motor until the oil pump refills, then it refills the sump.
