I was looking at my V mount earlier today on my FC and I thought up this idea to cool the oil with the same radiator water that is cooling the engine. through doings some searching I didn't come up with any previous threads about it. maybe I missed one.

the benefit of this is that the oil cooler could be located away from the incoming airflow and the only heat exchangers would be the radiator and inter-cooler getting all the fresh air.

I would think - IF - you could maintain the normal ~180 degree coolant temperatures having identical 180 degree oil temperatures would be cool enough?

I was debating whether a good fluidine or godspeed radiator with a 4500 CFM Taurus fan would be adequate for the task.. also debating whether to mount the radiator and water : oil-cooler to flow in series or parallel and if in series which comes first? I was thinking oil cooler. throw me some ideas I'm up for an experiment..

 

We tried a heat exchanger system on one of the race cars in the shop and the exchanger alone wasn't enough. It was fine on the ARCA stock car with a V8, not good on a street ported NA rotary.

It would be a fine add-on to the stock oil cooler though. They just get heavy and complex with the extra plumbing.

 

^I've heard the same thing from others who have tried it. You need alot of area of contact between the oil and the coolant radiator as you are trying to equalize temps between the oil and water. However since a third of the engine heat goes out through the oil, and now you are trying to give that heat to the cooling system, you need to drastically increase the size of the radiator to compensate. It CAN be done but the real question is, is there a benefit to going to all of that trouble? I'd say no.

 

Doesn't sound too feasible to do this then. was hoping to hear better news ha.

 

Heavy Duty Diesel engine oil coolers are like that, and are usually right next to the block or in the case of the Cummins ISX its integrated onto the block.
They are big, heavy, and as previously stated require a big contact patch to keep the temp of the oil same as the coolant.
And diesels are much more heat efficient than rotaries.

 

I believe this is what you're talking about. I don't think they make it large enough to handle all of the heat. What's wrong with peripheral oil coolers?

 

You are way off topic!

He is talking about a Oil to Water Cooler, then a bigger Radiator

 

So something like a laminova cooler? I apologize for being so off base.

 

Why not just add another oil cooler, or replace the current one with a larger oil cooler to meet your needs. If you go with your current plan of a combined water:oil cooler setup, you'll be rejecting all your heat into the water plus the heat normally rejected into it by the engine. This will cause you to need a sufficiently larger water side to your radiator to handle all the heat being added into it from the oil. The size that would be required maybe too large for your car. First try improving the current setup to make it more capable of rejecting heat or figure out if your engine is experiencing other problems that might be causing to make more heat than it should.

 

Never did I say my setup was not adequate as is. I was wanting to be different. The concept doesn't just work on paper it works in real life situations the only issue being space on these cars. if space was not an issue I could fit a radiator with more surface area. Then it would work.