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Old 07-01-2009, 09:15 PM
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Default How much cooling does engine oil do?

I've been trying to increase the cooling capacity of my car for a while now, when cruising on the hwy my temps are around 220* to 230* at around 3000rpm. I'm curious on how much cooling I can gain by adding a LARGE engine oil cooler with a fan and shroud in the rear of the car. Does anyone here have any first hand experiance with adding an engine oil cooler and if so how big of a difference did it make.

I spoke with a member that said it helped alot on his car so I am in the middle of planning to add one. Right now I'm trying to decide what size and what type to buy.

Any ideas on which type works the best?

Neal
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Old 07-01-2009, 09:20 PM
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Quite a bit, all the heat from the bearings is dissipated into the oil and the surrounding block. The only sensible way to plumb it however is if you thermostatically control the output to the cooler.

Get a stacked plate cooler, much more durable than a tube & fin model.

Here's some oil cooler stuff for inspiration.

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Old 07-01-2009, 09:44 PM
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thanks for the quick reply TT, I just got off the phone with one of Haydens engineers. He gave me a couple of things to look at, one I feel stupid for not even thinking about (know what the oil temp is right now). I've read so many threads saying that engine oil temp is 20* to 30* higher than water temp that I've not even checked the oil temp to verify what my oil is running at. He indicated that if the oil is not hot than adding an oil cooler will do nothing to help the water temps.

I've ordered an oil temp gauge so I will know what they are when I get the car running again.

Neal
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Old 07-02-2009, 11:39 AM
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Quote:
Originally Posted by 496BBC View Post
thanks for the quick reply TT, I just got off the phone with one of Haydens engineers. He gave me a couple of things to look at, one I feel stupid for not even thinking about (know what the oil temp is right now). I've read so many threads saying that engine oil temp is 20* to 30* higher than water temp that I've not even checked the oil temp to verify what my oil is running at. He indicated that if the oil is not hot than adding an oil cooler will do nothing to help the water temps.

I've ordered an oil temp gauge so I will know what they are when I get the car running again.

Neal
I just take my temp probe to my DVM and touch it with heat sink compound on the oil pan, OR, my later lazy device, the IR heat gun either way I have verified them both to track accurately.....I would guess the oil is in such a hurry in there being sprayed all over the joint that the temp variation would be less than 10f.....

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Old 07-04-2009, 02:28 PM
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Heres were I'm at right now, I've got an adapter installed between the filter and the block, its got a thermostatic controlled bypass built into it were it will bypass the cooler with a little oil while the engine is warming up. I'm also gona install a oil temp controlled thermostat as TT suggested between the adapter and the cooler so 90% of the oil will be bypassed back to the engine until the oil comes up to temp. Then the oil thermostat will control the oil temp by diverting oil to the cooler. The thermostat is designed to divert oil back to the engine until the oil temp reaches 170*, at this point it will start diverting oil to the cooler and at 180* all oil will be diverted to the cooler.

I'm looking at a large Fluidyne cooler, the size of a radiator to mount under the rear of the car. The reason I want a large cooler is to compensate for air fow. I'm going to mount two 12" fans on it and want them to run all the time so heat form the cooler don't effect the fuel tank. I'm going to install an insulated sheild between the cooler and the tank so I don't think it will be an issue. When speaking the member that shared his install with me he did some testing on his install and it had little to no effect on his fuel tank. He also installed a sheild between his cooler and tank.

Neal
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Old 07-08-2009, 10:29 PM
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My 69 ran warmer on the highway (70 MPH +) than it did around town. I took the front license plate and bracket off. More air= better cooling. It still gets warm, 12.5 compression, lots of timing, and 4:11 gears get credit for that, but it's liveable. Maybe you could open up the bumper in the center unless you have to run a front plate.
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Old 07-12-2009, 02:53 PM
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Originally Posted by TimAT View Post
My 69 ran warmer on the highway (70 MPH +) than it did around town. I took the front license plate and bracket off. More air= better cooling. It still gets warm, 12.5 compression, lots of timing, and 4:11 gears get credit for that, but it's liveable. Maybe you could open up the bumper in the center unless you have to run a front plate.
I removed the headlights and ran like that, made no change in temps. I'm running 4:11's, lots of timing and a 3 speed tranny with a stall so we know were the rpms are at hwy speeds.

Neal
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Old 07-16-2009, 02:25 AM
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Are you running the factory trans cooler mounted in the rad core? With a 3 speed auto and a manly converter (2,800+) you are going to be throwing a ton of heat into the radiator going down the highway.
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Old 07-16-2009, 09:47 PM
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Originally Posted by pcf_mark View Post
Are you running the factory trans cooler mounted in the rad core? With a 3 speed auto and a manly converter (2,800+) you are going to be throwing a ton of heat into the radiator going down the highway.
I moved to a seperate tranny oil cooler with its own fan mounted below the pass seat.

Neal
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Old 09-12-2009, 02:07 PM
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You sure mount your coolers in unconventional places. My oil cooler and my tranny cooler is up front where it gets on the average 65-85 mph of air flow. No additional fans needed. I also modded my front bumper for the additional air flow where the front plate used to be. I also use my old AC condensor for my tranny cooler and don't use the tranny cooler in the radiator. What are the weather conditions where you live?
Bee Jay
Edit: Nevermind, I used to spend my summers growing up in Franklin, just south of Lafayette. It sure can get hot and humid there. I don't visit in the summer anymore.

Last edited by Bee Jay; 09-12-2009 at 02:45 PM..
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