oil pressure is an issue in NA motors that aren't designed to have oil routing outside the motor. Unlike a Supra Turbo where the oil is pushed from the pump to the cooler; the cooler is always full, and maintains pressure.

that was my concern on my car, that's why i brought up the issue. If there is no pressure to keep the oil moving out of the cooler, then a: a check valve is needed at entry point, or b: the oil cooler must be installed in a fashion for gravity to push it through.

 

I understand what you were trying to do...but what if your turbo is bottom mount? You wouldn't have enough room to install a oil cooler andkeep everything downhill

There is plenty of pressure from the water pump to run coolant through a heat exchanger. I'd reccommend doing that first....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by totsie7944 &raquo;</TD></TR><TR><TD CLASS="quote">I understand what you were trying to do...but what if your turbo is bottom mount? You wouldn't have enough room to install a oil cooler andkeep everything downhill

There is plenty of pressure from the water pump to run coolant through a heat exchanger. I'd reccommend doing that first....</TD></TR></TABLE>

what do you mean by heat exchanger? you mean radiator?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">

what do you mean by heat exchanger? you mean radiator?</TD></TR></TABLE>

No I mean a heat exchanger like on a V8....I guess essentially it is a radiator, but it doesn't get fans...it looks like a intercooler on V8's but coolant runs through it and is cooled down by air like a intercooler on our I4 boosted cars.

You can get a smaller, long heat exchanger with -6 an inlets and outlets, and mount it behind the intercooler, not touching it though, to the back of the bumper support. Personally since I have a water cooled turbo, I would run the coolant POST turbo into the heat exhanger, then back into the coolant neck on the head that would then run into the radiator.

Or instead of running it into the coolant neck, weld a bung onto the radiator and have it return directly to the radiator.

 

OK here is another question. Someone mentioned earlier that the oil should be no more than 20deg hotter than coolant temp. This would be ideal.

Now the question is...do you getthat reading from the sump temp or from the feed after the oil cooler?

 

Mine temp sensor is mounted on a block I made which is fed from the stock oil pressure sensor...

 

Why would you run this cooler from the turbo? This is dumb. Run it from a sandwich plate on the back of the block. Use the mocal 180f thermostat equipped unit, it works great.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by totsie7944 &raquo;</TD></TR><TR><TD CLASS="quote">Mine temp sensor is mounted on a block I made which is fed from the stock oil pressure sensor...</TD></TR></TABLE>

What kind of sensor? I thought they were all mounted in the pan.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redlinetuning &raquo;</TD></TR><TR><TD CLASS="quote">

Well, if you have your oil cooler setup in a fashion that there isn't enough downflow, once the oil cooler fills up or in the event there is a clog, it could back flow in to your turbine housing. Most oil coolers that are mounted horizontally have check valves to prevent the oil from flowing back (vacuum pressure, etc). Those that don't have the check valves are typically mounted vertically (for gravity feed).
</TD></TR></TABLE>

its clear at this point you are referring to the CHRA and not actually the turbine housing, i guess it could back up into the chra to the point it blows seals and goes into the turbine housing, but eh, thanks for clarification though, makes sense

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Root of all Evil &raquo;</TD></TR><TR><TD CLASS="quote">

What kind of sensor? I thought they were all mounted in the pan.</TD></TR></TABLE>

The stock oil pressure sensor on the back of the block. You can get fittings to thread into it and then I ran a -3an line to a 6 input block to to my oil temp and oil pressure gauge, stock pressure gauge, turbo feed, etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by totsie7944 &raquo;</TD></TR><TR><TD CLASS="quote">

The stock oil pressure sensor on the back of the block. You can get fittings to thread into it and then I ran a -3an line to a 6 input block to to my oil temp and oil pressure gauge, stock pressure gauge, turbo feed, etc.</TD></TR></TABLE>

good idea I am buying a new pan and I'm going to do this as well. Thanks

 

why is this dumb? wouldn't you want to filter and cool the oil after exiting the turbo?

Less oil to cool = less time to cool.

To me it makes sense to cool it off after exiting the chra since it's so hot. I mean, using the sandwich plate makes sense too, but it would be more strain on the oil pump to need to pump oil to the turbine and cooler.

Cooling it after the CHRA using gravity feed sounds more efficient and less strain on the oil pump, doesn't it?