Jackson Racing Dual Radiator/Oil Cooler

[lazyluka]

Most of the questions asked have already been answered..... Please consider reading the full thread.

Originally Posted by Cybmx

Is there any way to drain the oil from this cooler during oil change?

See posts above (#155/#156). You don't need to drain the oil during oil change. This is perfectly normal on every oil cooler out there.

Originally Posted by JDM4E

A few questions

1) is the radiator deeper than stock to the engine area? (read: will it fit JDL EL catted longtube header?)
2) any disadvantages or concerns for daily use? I am thinking of this piece as another step from Forester water/oil cooler. I live from -30 °C to +30 °C, daily, spirited, and 20 mins max. occasional track sprints. Also if this warm up the oil even faster than Forester cooler, than great. I don't want dedicated air-oil cooler because of winter hassle
3) any chance JacksonRacing will reconsider and provide better quality hoses as mentioned above?
4) can you see the JacksronRacing logo from the front of the car? If so, can it be removed or somewhat erased? Nothing about the brand, just OEM stealth look for me.
Thanks

1) Radiator is 31mm and majority of thickness is pushed backwards. Post #59
Also see Post #78 for how to measure if it will fit with your exhaust
2) I don't think warm up will be much different to the Forester cooler. Should be OK for cold climates. Post #38 Post #45
3) I am sure the JR hoses will be fine, but you can always make/purchase your own hoses if this is a huge concern. I have however emailed @CSG David about doing something like this on the order I placed just due to international shipping delays/peace of mind.
4) The radiator is located behind the AC condenser so you can't see the radiator from the front of the car even if it has a logo on it (unless you have an AC delete).

Originally Posted by Irace86.2.0

Does anyone know if this is an improvement over the Forester XT cooler mod with a larger radiator?

Yes it would be an improvement considering it will apparently outperform the Perrin. I am moving from the Cusco cooler (similar to the Forester) to this to avoid overheating the oil on extended track sessions.
See Post #97
To upgrade or not will depend on the type of driving you are doing. If you don't track your car, the XT cooler may be sufficient for your needs.

[Irace86.2.0]

Originally Posted by lazyluka

Yes it would be an improvement considering it will apparently outperform the Perrin. I am moving from the Cusco cooler (similar to the Forester) to this to avoid overheating the oil on extended track sessions.
See Post #97
To upgrade or not will depend on the type of driving you are doing. If you don't track your car, the XT cooler may be sufficient for your needs.

Thanks for the response. The trouble I was having in my mind was with the science of it all.

--The Forester XT oil cooler cools oil by redistributing the heat to the water cooling system aka the radiator. One possible upgrade is to get a larger radiator to go with this mode. The larger radiator will decrease the coolant drop, and with cooler coolant means there is a great differential in this oil cooler, but that doesn't mean it will be effective. There could be too little surface area at the Forester cooler to see a change from a larger radiator. Also, if the radiator fluid isn't heating as much as the oil, cooling the coolant more through a larger radiator may not even result in changes seen at the coolant like throwing water next to a fire versus on it.

--Traditional oil coolers add surface area for cooling and direct it specifically at the oil like throwing water on a fire.

--For the JR radiator/cooler combo, is it essentially the Forester XT mod with a larger radiator only, or did they increase the radiator fluid to oil fluid exchange surface area, such that it out performs the Forester XT cooler, or does this cooler also have veins in the radiator being directly cooled by air like a traditional oil cooler on top of the fact that there is an oil to coolant exchanger? The Forester XT oil cooler is also behind the radiator, and it is round sitting vertically, so it gets less air to the outside, and in that aspect, the JR setup might have an advantage being placed next to the radiator and being tall and flat.



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[lazyluka]

Originally Posted by Irace86.2.0

Thanks for the response. The trouble I was having in my mind was with the science of it all.

I am not really knowledgeable enough to answer this, I will give it a go tho. I don't have anything to back up what I write so hopefully @Jackson Racing or @CSG Mike can chime in and correct me.

Your first point about the XT cooler not having enough area seems correct. The XT cooler does have only so much surface area to transfer energy. Furthermore, if you look at the coolant tubing going thru the XT cooler you will notice it's limited in how much coolant flows through the oil cooler.

I believe that the JR dual cooler is based on a Laminova core design or something similar. From memory, the Robispec dual cooler used this method as well. So you can think of the JR dual cooler as the laminova combined with a bigger radiator all in one reliable package, which also means you can re-use factory style radiator hoses (or aftermarket silicone ones) and keep your engine bay looking OEMish.

The bigger radiator part will also help and having the oil cooler not mounted to the engine should also help a tiny bit as well.

The laminova core will essentially allow more energy transfer between the coolant and the oil than the XT cooler. A good example is the Ptuning oil cooler which places the laminova core on the outside of the radiator. An old thread regarding Laminova DIY if you wanted a read can be found here.

I am overheating the oil with the Cusco unit and see this as an upgrade, if your oil temperatures are fine with the XT cooler then it may not be worth the extra cost. If you are thinking of going FI in the future you may be better off waiting and then buying the FI oil cooler from JR instead as you may reach this coolers limits.

[Bfranklyn86]

Any update on whether JR will be offering uprated lines with this kit? Or are we happy that failures are so rare that it isn't necessary?

@CSGMike can you comment on this?

[ArCha]

Does anyone know roughly how much coolant this requires?

[Kestrel]

Originally Posted by ArCha

Does anyone know roughly how much coolant this requires?

I threw 2 jugs of Subaru blue in it

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[BRX]

I'm not sure if this is a good or bad thing. Temps get up to 120-125 here in the afternoon. I had an older scangauge which I used to monitor water temps only and cruising at 90 MPH in this weather gets the water coolant up to 220F without an oil cooler. Now that I installed the Jackson Racing dual radiator and oil cooler, I'm seeing these temps at lighter loads while cruising at 70MPH and about 5-10 degrees higher than before when just driving around town. Now that I upgraded my scangauge I can monitor my oil temps and they never exceed 230F even with spirited driving. This is all street driving with almost no WOT pulls. I just can't get myself to floor it seeing those numbers. BTW I'm running a water/oil cooled GT3076R Turbo. At what water/oil temps should I be worried?

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[TheMedakaBox]

Originally Posted by TkTk

In my opinion braided steel lines is the way to go.

I had similar failure using the same lines. Hope Jackson Racing offers braided steel lines as an option for this kit.

What length of 10AN stainless steel braided hoses did you go with your JR Dual Cooler?

[ArCha]

The Aeroquip lines are 14.5in and 17.5in. I just got them done the same length but haven't installed yet.

[BRX]

Here are my braided lines I had custom made.

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[Lunatic]

Originally Posted by BRX

Here are my braided lines I had custom made.

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Very nice.

[Capt Spaulding]

Originally Posted by Lunatic

Very nice.

+1

[churchx]

Those 90deg fittings makes me think if there is not possible more direct/shorter connection :/

Still, having option (optional, if it makes rad set that much more expensive) of more bend reliable lines at order time in my eyes would be very nice feature to see.

[BRX]

Originally Posted by churchx

Those 90deg fittings makes me think if there is not possible more direct/shorter connection :/

Still, having option (optional, if it makes rad set that much more expensive) of more bend reliable lines at order time in my eyes would be very nice feature to see.

90 degree bends give the most room for a lot of setups including mine. But I suggest doing whatever fits yours best.

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