Just to add on to this thread, decided to swap my 13 row oil cooler for a 19 one after seeing the temps both lee and stans cars hit at fcs,

Should solve the problem mainly will be doing track work, also having the turbo i assume the oil will get hotter than a supercharged one, hence the need for a change

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TEAM Supercharged Rallye

What engine you running mate?

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TEAM Supercharged Rallye

thread bump but did you get this problem sorted in the end lee?

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Team allesclar ®

Mild thread hijack..
Is £120 a reasonable price for a 13 row Mocal kit??

see link

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Rallye-R

Nurburgring article

yes thats a good price, alot of people sell used kits for around £100 lol might aswell get the new kit for a few quid more.

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Team allesclar ®

i got a 13 row cooler with a sandwich plate on my 205 track car, the cooler runs side by side with the rad so unrestrictive airflow and the spa gauge reads around 92 degree on track which is perfect

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230 hp 2.1 16v XU 205 rallye on jenveys Project thread here
309 3dr K20 Type R

not a massive amount more, a 5L tub will still do the engine and cooler.

can have to much cooling though, oil needs to be a good 70 degree before its at its optimum film strength from memory

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230 hp 2.1 16v XU 205 rallye on jenveys Project thread here
309 3dr K20 Type R

Lee,


Your oil cooler itself definitely is working.

There’s lots of things you’re not considering here, and comparing it to Stan’s car for example is not an “apples with apples” comparison.

Stan’s car is high-boost, yours is low-boost. Stan’s engine has been purposely built to mitigate and dissipate heat more effectively than your standard engine. For example, it has a substantially lower compression ratio which results in lower combustion chamber temperatures (despite running more boost), we use bearings with larger running clearances on the bottom end to increase oil flow and provide better cooling to the crankshaft and rods, and the list goes on. The measures all contribute to an engine that manages heat much more effectively. So it’s not really valid comparing it with yours.

The first thing I would look at is your oil temperature sensor, and check the output temperature actually corresponds to the oil temperature.

If it does, I would then look at the rest of your cooling system.

Do you still have the OEM water / oil heat exchanger fitted? Make sure you have this fitted, and make sure it’s not been capped off or anything. Even with a dedicated air / oil cooler, from my experience these still help tremendously, and I would never remove it. As soon as the oil temperature overtakes the water temperature, you basically dissipate heat from the oil with the water radiator, which is obviously a lot bigger than your oil cooler.

You also need to bear in mind all engines are different, there are many different factors that affect the thermal behaviour of an engine, even if comparing two engines of the same specification. Examples of this are the condition of the internal coolant passages i.e. amount of corrosion, spark plug type, air-fuel ratio, ignition advance, fuel choice, camshaft timing, cylinder bore wear, crankshaft journal or bearing wear etc etc.

Don’t bother changing the oil pump – this will achieve f*ck-all. You engine wouldn’t be functioning as an engine if you had an oil supply problem.



Regards,
Rich

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Contact Details:

rich@lynxpowerengineering.co.uk
07732 822546

Reading back I think its your location thats causing you most of the problem, it needs it's full surface to be in a high airflow area. Situating it behind a foglight cutout will srstrict it's available air massively. Also you need to consider weather or not the hot air is actually getting out of it ok. If high pressure air is building behind it it won,t dissipate heat at all. Try temporarily mounting it in front of your radiator, in the middle low down behind the grille. If it does'nt improve the cooling I'd be very suprised.

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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.

Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars