Best way to plumb oil cooler for turbo's?
#1
Staging Lane
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Best way to plumb oil cooler for turbo's?
just curious what would be the best way to do this? I have a pretty large oil cooler on the front of my car and was wondering how I should plumb it.
I was going to tap into the 2 pressure fittings on the side of the oil pan where the cooler would normally go, but what about the pressure line for the turbo's? Is it better to go before the cooler or after?
I guess it would depend on is it better to keep the cooler oil for the engine or for the turbo. If I route the oil on the inlet of the cooler the oil going to the turbo's would be at the highest temperature and less of that temperature would go to the engine. If i route the line after the cooler the oil would be at its coolest state going to the turbo's first and then the engine giving it higher oil temps.
I was going to tap into the 2 pressure fittings on the side of the oil pan where the cooler would normally go, but what about the pressure line for the turbo's? Is it better to go before the cooler or after?
I guess it would depend on is it better to keep the cooler oil for the engine or for the turbo. If I route the oil on the inlet of the cooler the oil going to the turbo's would be at the highest temperature and less of that temperature would go to the engine. If i route the line after the cooler the oil would be at its coolest state going to the turbo's first and then the engine giving it higher oil temps.
#3
Not sure if this will help but I took this out of my LQ4 service manual on page 6-202,
"An external oil cooler is available on certain applications. Oil is
directed from the oil pump, through the lower main oil gallery
to the full flow oil filter. Oil is then directed through the oil pan
outlet oil gallery (located in the left rear of the oil pan) and to
the external oil cooler via a hose assembly. Oil flows through
the oil cooler and returns to the engine at the oil pan inlet oil
gallery (located in the left rear of the oil pan). Oil is then
directed to the upper main oil galleries and the remainder of
the engine assembly."
"An external oil cooler is available on certain applications. Oil is
directed from the oil pump, through the lower main oil gallery
to the full flow oil filter. Oil is then directed through the oil pan
outlet oil gallery (located in the left rear of the oil pan) and to
the external oil cooler via a hose assembly. Oil flows through
the oil cooler and returns to the engine at the oil pan inlet oil
gallery (located in the left rear of the oil pan). Oil is then
directed to the upper main oil galleries and the remainder of
the engine assembly."
#6
You can plumb the turbo anywhere. Either the back at the top or plumb it near the filter.
And I believe edge04 was stating that cause there's not much response.
#7
TECH Senior Member
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The best way is to get one of those oil cooler adapter pieces that bolts to the block right above the oil filter. Then you plumb the fittings of the block to your oil cooler. And then some blocks have a port where you can put an external oil line to feed the turbo with cooled oil.
I think Katech and Lingenfelter make the block, and you can find some on eBay. They are easy to make if you have access to a mill.
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#8
TECH Junkie
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The turbo could get oil from either side and should not change performance of the system. The best oil cooler adapter I have seen is from Mocal and has a thermostat built in, it sends oil into the cooler at 200F.
Kurt
Kurt