dual FC oil coolers
10-26-10, 07:11 AM
#2
Running them parallel will give you the most cooling. Its a matter of temperature differential from the oil to the air, in series the second cooler would not be running a very high temp differential.
Its up to you but I keep the thermostats intact on my dual set ups. To get rid of them you pull out the T stat mechanism and tap the bypass hole(you'll see how it works) and thread a plug into it.
Its up to you but I keep the thermostats intact on my dual set ups. To get rid of them you pull out the T stat mechanism and tap the bypass hole(you'll see how it works) and thread a plug into it.
10-26-10, 07:42 AM
#3
running them parallel will give you the most cooling. Its a matter of temperature differential from the oil to the air, in series the second cooler would not be running a very high temp differential.
Its up to you but i keep the thermostats intact on my dual set ups. To get rid of them you pull out the t stat mechanism and tap the bypass hole(you'll see how it works) and thread a plug into it.
Its up to you but i keep the thermostats intact on my dual set ups. To get rid of them you pull out the t stat mechanism and tap the bypass hole(you'll see how it works) and thread a plug into it.
10-28-10, 08:18 AM
#5
Unless you are building a car to road race, dual oil coolers is overkill. My S5 turbo car with modest mods (270hp to the road), ran well below the danger mark in two days of HPDE in the middle of summer on very warm days. Keep in mind, you want the oil temps to be hot for best lubrication and engine efficiency. Running the engine with cool oil is definitely not the way to go.
10-28-10, 08:33 AM
#6
When I was pushing the car in twistys here. my oil temp would be hitting 100 ~ 110C that near 230f. When I would go back normal driving it would come back down to 75 ~ 85c. the water temp was fine 80 ~ 90c. These oil coolers are going into a cosmo that is getting some big mods and should push the power from around 230 up to near 500. The Stock cosmo oil cooler is very small and is not a problem if you just putting around town, but even in the stock form when you start pushing on it, it really starts heating up. lol it seams I would be driving with one eye on oil temp always.
in the front of the cosmo there is a lot of room so I plan to run dual FC coolers. The stock cosmo oil cooler is tucked in a brake duct and really does not get good airflow.
here in Okinawa it is raining or it is hot and raining most of the year
in the front of the cosmo there is a lot of room so I plan to run dual FC coolers. The stock cosmo oil cooler is tucked in a brake duct and really does not get good airflow.
here in Okinawa it is raining or it is hot and raining most of the year
Last edited by 87GTR; 10-28-10 at 08:35 AM.
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10-29-10, 04:30 AM
#8
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dual FTW
i really had cooling issues on the track after upgrading the turbo (shattering the 300rwhp mark) and i already had a big aftermarket radiator and oil cooler...
i am going to run them in series..
ps. the hose connection on the rad will be brought to the side. before you guys start asking how i would be connecting a hose to that
i really had cooling issues on the track after upgrading the turbo (shattering the 300rwhp mark) and i already had a big aftermarket radiator and oil cooler...
i am going to run them in series..
ps. the hose connection on the rad will be brought to the side. before you guys start asking how i would be connecting a hose to that
10-29-10, 12:23 PM
#11
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That is the Question!
Parallel you have the oil going in Both coolers,and exiting after Cooling.Right?
Series though,you have oil getting cooled in One cooler and then Going through another cooler and getting Cooled More,then Exiting.
It's a toss up!.Six of one,half a dozen of the other!
10-29-10, 02:04 PM
#12
Run them in parallel, reverse return arrangement.
Parallel provides greater total capacity and reduced parasitic load on the engine vs series configuration (assuming proper reverse return plumbing or Y-fittings). It's also easier and cheaper as you need less hose.
1 stock cooler, freshly cleaned, was not enough for my 170 rwhp stock port N/A road race car, even with very good ducting and a larger front opening.
Even though good oils can handle 300deg plus, Oil temps going into the engine over 240 is dangerous, the rotary bearings cannot handle high oil temps like some piston engines can.
We fought oil temps consistently with one cooler....
Parallel provides greater total capacity and reduced parasitic load on the engine vs series configuration (assuming proper reverse return plumbing or Y-fittings). It's also easier and cheaper as you need less hose.
1 stock cooler, freshly cleaned, was not enough for my 170 rwhp stock port N/A road race car, even with very good ducting and a larger front opening.
Even though good oils can handle 300deg plus, Oil temps going into the engine over 240 is dangerous, the rotary bearings cannot handle high oil temps like some piston engines can.
We fought oil temps consistently with one cooler....
10-29-10, 02:05 PM
#13
Series or Parallel?
That is the Question!
Parallel you have the oil going in Both coolers,and exiting after Cooling.Right?
Series though,you have oil getting cooled in One cooler and then Going through another cooler and getting Cooled More,then Exiting.
It's a toss up!.Six of one,half a dozen of the other!
That is the Question!
Parallel you have the oil going in Both coolers,and exiting after Cooling.Right?
Series though,you have oil getting cooled in One cooler and then Going through another cooler and getting Cooled More,then Exiting.
It's a toss up!.Six of one,half a dozen of the other!
If keeping both thermostats working, u have sometimes oil bypassing one cooler and sometimes both of them.....Easy to check by touching the coolers under operation....
10-29-10, 07:23 PM
#14
dual FTW
i really had cooling issues on the track after upgrading the turbo (shattering the 300rwhp mark) and i already had a big aftermarket radiator and oil cooler...
i am going to run them in series..
ps. the hose connection on the rad will be brought to the side. before you guys start asking how i would be connecting a hose to that
i really had cooling issues on the track after upgrading the turbo (shattering the 300rwhp mark) and i already had a big aftermarket radiator and oil cooler...
i am going to run them in series..
ps. the hose connection on the rad will be brought to the side. before you guys start asking how i would be connecting a hose to that
wow nice setup!!! does the lower rad hose hit the ground?
well I ordered the hose an fittings once they come I will post some pics of the install. Im going to try and fab up mounting brackets on Sunday if I have time
Last edited by 87GTR; 10-29-10 at 07:26 PM.
10-29-10, 08:37 PM
#15
I've seen a few set ups running series and it is the easiest way to do the install. It seems for the power levels we can make NA the single cooler is just barely too small. Adding the second cooler in series gets you enough to do the job most of the time, if series doesn't work you still have the parallel option.
I split the oil coming out of the engine with a 2 in, 2 out remote filter holder. Just use 1 in and 2 out. I've brought it back to the engine two different ways. One car has the coolers feeding the stock return and the front main bearing galley, the other brings both coolers back to the stock return through a stock banjo bolt that I added a -8 AN fitting to the head of(drilled through the head and welded on a cut down -8 male)
I split the oil coming out of the engine with a 2 in, 2 out remote filter holder. Just use 1 in and 2 out. I've brought it back to the engine two different ways. One car has the coolers feeding the stock return and the front main bearing galley, the other brings both coolers back to the stock return through a stock banjo bolt that I added a -8 AN fitting to the head of(drilled through the head and welded on a cut down -8 male)
