Overheating on track only

[adem.csl]

Wow mine behaves soo beautifully i got no temp issues touch wood!

[rstoughy]

Yeah mine cooked in Germany. Off the scale.

[CraigMillwardCroft]

Yeah mine cooked in Germany. Off the scale.

Have you found what the problem was or found a solution.

[rstoughy]

1/2 a lap stuck behind an R8 who wouldn't move over seemed to be the problem.
Not only was it close to 30deg but was running into all the hot air coming out the back of that thing.

[Mike RT4]

At the same DN9 event, mine had perfect water temps, but 125 deg oil temps and I was running the air con all the time. As mentioned the ambients were 30 deg and the on track the temps rose to 38 deg as displayed on the dash, which was the hottest I've ever run the car at full chat.

I then had similar oil temps at Silverstone, hence why I'm going to invest in an oil cooler.

[alexk]

I find it odd that a few people have oil overheating issues.
Mine never had any oil overheating.

Has anyone thought that the oil thermostat could be broken ?

[Mike RT4]

I find it odd that a few people have oil overheating issues.
Mine never had any oil overheating.

Has anyone thought that the oil thermostat could be broken ?

Perhaps you don't drive fast enough .

I believe it to be okay, as in normal driving it hovers around the correct 100°C.

[Ali M_csl]

Yeah mine creeped off the middle of the gauge for the first time ever.

Also worth mentioning that Ali looked like he'd been in a wet t-shirt competition through the sweat from having heaters on :hahaha:

Didn't like the idea of coming off the throttle early approach.

Alternative was + 32 on heaters when driving an M3 that felt like a greenhouse in 30 deg heat. As you know, the the result was a sweat fest!!!

[Graham]

I'd have gone for your approach too to be fair!

[stevenEK9]

+1 on the elevated water temps at DN9 (brand new radiator and thermostat in mine), I too looked like a spring break hoochie when i peeled myself out the car due to running the fans at full heat but the blowers on as low as possible and the windows cracked open a bit

going to have a look at improving the cooling system (if it means removing the clutch fan then so be it) over winter when i plumb in some brake ducting with the CSL bumper

oil temps were about 120-125 so nothing untoward there

[Mike RT4]

I would add that to achieve the perfect water temps, I ALWAYS remove the front number plate on my cars when on track, as it disrupts the air flow to the cooling systems (something which most people seem to overlook ).

[Mark CSL]

Just a thought but how accurate do you think the gauge is ?
Has any one tested it ?:whistle:

[Mike RT4]

Just a thought but how accurate do you think the gauge is ?
Has any one tested it ?:whistle:

Setra has (we had a conversation at the 'ring) - he said that the OEM oil temp gauge does over-read by some 15-20° - however, I'm not sure if that is °C or °F :whistle:

[alexk]

Just a thought but how accurate do you think the gauge is ?
Has any one tested it ?:whistle:

Yes I have been testing it the last 2 months or so.

The temperature gauge for temperatures between 84 and 94 C shows bang on the middle (this is the buffering function of BMW's gauges).
95 C and then it goes to 3/4 :whistle:
83 C and you are 3mm below middle.

At the same time, the car's manual shows normal water temperature is between 1/4 and 3/4.

So I am starting to wonder whether the issues most of us see on the track (cars with an issue excluded) is down to the:
1. Operation of the gauge
2. Behavior of the engine under different loads.

[alexk]

If you come off the throttle within 1-2 corners the water temps drop quickly.

So shimmy why the water temp in the gauge drops so quickly is because it's just 1C difference between 3/4 and 1/2 (from 95C to drop to 94C).