Is 19 row Oil Cooler too much for NA?

[Ultramaroon]

Originally Posted by Ashikabi

Mhm. Doesn't going from a smaller pipe to a larger pipe reduce pressure?

It reduces resistance to flow. Less pressure drop. Would you rather drink through a swizzle stick, or a big fat mcdonald's straw?


If you were stuck with swizzle sticks, you could tape a bunch of them together to get the same effect.

[Ashikabi]

Originally Posted by Ultramaroon

It reduces resistance to flow. Less pressure drop. Would you rather drink through a swizzle stick, or a big fat mcdonald's straw?

Ohhh I see. Less pressure drop because there is less pressure to begin with

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[Ultramaroon]

Originally Posted by Ashikabi

Ohhh I see. Less pressure drop because there is less pressure to begin with

Not exactly but closer. Try thinking of the oiling system as a closed circuit. Pressure is zero as soon as it gets past the journals. Pressure is at its highest at the output of the pump - say 50 PSI just to give it a number.

That 50 PSI is our pressure budget to work with. It will always end up at zero past the journals but they are not the only things that resist flow (drop pressure). They could be if there was a short fat pipe between pump and journals but that's only for imagination.

Now start adding stuff like corners and narrow galleries to resist flow. If we feed the journals through a swizzle stick, the swizzle stick would take up most of that pressure budget because the cross sectional area of the swizzle stick hole is similar to the journal clearance. Let's say that the journals see only half of that total pressure - 25 psi.

How could we get back to that fat pipe? We can add a bunch of swizzle sticks together. Now oil flows more easily through that part of the circuit. Less pressure drop because more cross-sectional area.

[ermax]

Where can I get some swizzle sticks?

[Ultramaroon]

Originally Posted by ermax

Where can I get some swizzle sticks?

From the swizzle stick store duh

[86TOYO2k17]

Originally Posted by DarkPira7e

With a thermostatic plate, my oil cooler still overcooked my oil in negative temps. I couldn't get my oil over 150 in highway driving

Get a higher rated thermostat.

[DarkPira7e]

Originally Posted by 86TOYO2k17

Get a higher rated thermostat.

I chose to uninstall the sandwich plate. Plan going forward yearly is to uninstall in October and re-install in May when temps get above freezing consistently. The oil cooler itself and lines remain installed but tucked away, much easier this way

[NoHaveMSG]

Originally Posted by DarkPira7e

Without it was was hitting 180s-190s. With cardboard over it I was back in the 170s

I have the same issue, it is even worse if you have a splitter and ducted hood. I left my house once in July for a track day at 4am and drove nearly 3 hours. It was a little over 50F and even my coolant temp Couldn't hit 160F

[DarkSunrise]

Even on my 13 row Perrin kit (Setrab 613), my highway oil temps were below 170 F when it was cold out. I've mounted my front license plate as a block-off plate and it works fairly decently. I just pull the front plate off at the track or in the canyons.

At the track, the 13 row is what I'd call barely sufficient for NA. I would hit occasional peaks of 240-245 F.

My suggestion would be to get the 19 row and create a block-off plate for the highway.

[ZDan]

Have you considered that you might not need an oil cooler?

[norcalpb]

Very informative video on oil cooling for our cars.

[ZDan]

Originally Posted by norcalpb

Very informative video on oil cooling for our cars.

I remember this vid. Where he says "we've established the fact that you need an oil cooler" without presenting any evidence whatsoever that we do...

[NoHaveMSG]

Originally Posted by ZDan

I remember this vid. Where he says "we've established the fact that you need an oil cooler" without presenting any evidence whatsoever that we do...

I think this is more representative of cooler vs. no cooler data. To me it is not entirely conclusive as I have not observed the same behavior on my car. I will be switching to a setup to log oil temps and pressure on my car next year.

https://www.ft86club.com/forums/showthread.php?t=91820

[86TOYO2k17]

Originally Posted by DarkPira7e

I chose to uninstall the sandwich plate. Plan going forward yearly is to uninstall in October and re-install in May when temps get above freezing consistently. The oil cooler itself and lines remain installed but tucked away, much easier this way

I switched the standard 180F thermostat that starts to open around 150-160F. to a a 197F thermostat that starts to open around 167-177F.

I also used the oem forester water to oil heat exchanger, both of these combined let the oil warm up to 170s fairly quickly regardless of weather.

Also unless relocated the sensor is post oil cooler, and the oil could be a solid 30F hotter in other parts of the engine / pre oil cooler.