Water oil cooler
Discussion
Does any body know anything about these ,i was at a local motor sport parts dealer talking about fitting an oil cooler and how tight it is to fit one behind the radiator,he said a water oil cooler may be the best solution and showed me one fitted to a Vauxhall,it was a sandwich between the oil filter and housing and was about 50mm thick with two heater size water pipes connected to it.They are used a fair amount on Diesel engines because they heat the oil up quicker and then cool it off as the temperature goes up, Mocal are not supplying them at the moment so getting one may be difficult unless any body knows different thanks for any info supplied regards Steve.
Andy
i had a look at demon tweeks web site the heat exchanger they have is a different idea to the one i have seen , does the same job but as you say has four pipes to connect up, the sandwich plate type only has the two to think about, i love the simplicity of it, if i can track one down that fits i will have it , it will be easyer to fit than an air oil cooler and look after the oil at both ends of the temp scale thanks very much for your reply best regards Steve.
i had a look at demon tweeks web site the heat exchanger they have is a different idea to the one i have seen , does the same job but as you say has four pipes to connect up, the sandwich plate type only has the two to think about, i love the simplicity of it, if i can track one down that fits i will have it , it will be easyer to fit than an air oil cooler and look after the oil at both ends of the temp scale thanks very much for your reply best regards Steve.
I really like the idea of the oil-to-water coolers, despite the fact that mine has an oil-to-air cooler fitted. However, there are some gotchas with them. Firstly, all it does is dump the heat into the water circuit. Unless this is capable of handling the extra load, you may introduce overhating problems. Secondly, the oil can easily get hot enough to exceed the boiling point of the water circuit. If you don't have enough water flow to control the oil temperature, this can lead to boiling within the oil cooler. You need to design the oil cooler installation so that any steam formed within it automatically bleeds out, and also arrange the cooling system so that any steam that comes out of the oil cooler is extracted by the degas system before it reaches the pump. The two nasty failure modes are boiling within the heat exchanger (equals no more oil cooling, oil temperature goes through the roof) and steam introduced into the main water circuit (causes the pump to cavitate and stall, knackers the whole engine cooling system).
Oil-to-water coolers do seem quite elegant, especially the way they improve oil warm-up times, but in many ways the're a lot less safe than a conventional oil-to-air cooler.
Oil-to-water coolers do seem quite elegant, especially the way they improve oil warm-up times, but in many ways the're a lot less safe than a conventional oil-to-air cooler.
Peter
i follow your point about the water temp,it will rise with the water oil cooler as it does if you fit a air oil cooler in front of your radiator my cooling system copes easily at the moment if i had a problem i would upgrade the radiator i can recore with an extra row for a little over £100 ,the point about maybe not having enough water flow forming steam and getting a rise in oil temp i dont think is valid because if i fitted the cooler but did not connect the water pipes the oil temp can not rise any higher than it can without the cooler the water temp is much lower than the oil temp .Any steam formed in the water system would be delt with by the system as it is designed to do now,i would probably weld connections into the two stainless pipes going to and from the radiator but i would take some advice on that ,so as it stands i still see the only problem is getting one that fits thanks for your reply regards Steve.
i follow your point about the water temp,it will rise with the water oil cooler as it does if you fit a air oil cooler in front of your radiator my cooling system copes easily at the moment if i had a problem i would upgrade the radiator i can recore with an extra row for a little over £100 ,the point about maybe not having enough water flow forming steam and getting a rise in oil temp i dont think is valid because if i fitted the cooler but did not connect the water pipes the oil temp can not rise any higher than it can without the cooler the water temp is much lower than the oil temp .Any steam formed in the water system would be delt with by the system as it is designed to do now,i would probably weld connections into the two stainless pipes going to and from the radiator but i would take some advice on that ,so as it stands i still see the only problem is getting one that fits thanks for your reply regards Steve.
I've fitted the cooler to a serpentine 500 this evening (It's not permanent James, don't worry).
You will need to use the Ford oil filter which is shorter as the standard one won't fit.(No problem with that just change it more often).
I've taken a couple of photos which i would post on the forum if i knew how.
You will need to use the Ford oil filter which is shorter as the standard one won't fit.(No problem with that just change it more often).
I've taken a couple of photos which i would post on the forum if i knew how.
Ian
let us know how you get on with it ,i must admit i did not take the advice from Peter (GREEN V8S) about the water feed side to seriously ,i was more concerned with getting one than fitting one but i was at a dealers the other day and was shown a water oil heat exchanger that is a standard fitting on a speed six Tuscan it was a bigish lump that fits direct into into the radiator return line and so the water connections are around 35-40 mm ,Peters remarks came back to me (sorry Peter)and i have been thinking about where would be the best places to connect into since then with enough pressure drop differencial ensure a good water flow ,so if you could post details of your fitting , how you get on with it and the effect on oil pressure and engine temp that would be great good luck best regards Steve.
let us know how you get on with it ,i must admit i did not take the advice from Peter (GREEN V8S) about the water feed side to seriously ,i was more concerned with getting one than fitting one but i was at a dealers the other day and was shown a water oil heat exchanger that is a standard fitting on a speed six Tuscan it was a bigish lump that fits direct into into the radiator return line and so the water connections are around 35-40 mm ,Peters remarks came back to me (sorry Peter)and i have been thinking about where would be the best places to connect into since then with enough pressure drop differencial ensure a good water flow ,so if you could post details of your fitting , how you get on with it and the effect on oil pressure and engine temp that would be great good luck best regards Steve.
steve290353 said:
...but i was at a dealers the other day and was shown a water oil heat exchanger that is a standard fitting on a speed six Tuscan...
Is this really a standard fit (car is at the dealers at the moment, so can't check!)
I was watching this thread with interest with a viewer to fitting one to the Tuscan to accelerate warm-up times...I assumed that it wasn't a factory fit item.
I saw the heat exchanger at TVR Hexham the mechanic said its a standard fit ,as Peter says the cooled water was going through it which surprised me because it was huge compaired to the sandwich type,from memory it was about 250mmx60mm the water connections were one at each end you could see the tube plates loads of tubes about 2mm bore maybe 3mm i just thought the S6 oil must get very very hot i dont think you would add a cooler that size for road use,it was a used unit he said they had changed it due to leaking water into the oil it is the only one they have changed i feel sure it was genuine i am a customer of Hexham best regards Steve.
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