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[alik01]

Originally Posted by pavo335

oil or water? and what do you define as high?

Oil and I suppose water by association. High for me is 130C-145C. I just don't feel too comfortable continuing to push when it gets past 135C.

[05C4R]

Mine never gets that hot at the track, they run 20 minute sessions at EC, by the end the needle is just above 120, maybe its the extended sessions?

perhaps you need one of these

[IDriveACamryNow]

If you are running a tune then your cooling system is no longer up to the job.

A few cheap options are using 0w40 and a water wetter mixture in the radiator.

As far as tracking goes, i think the longer the session the better. Water absorbs heat 4x better than air, but you need a constant stream of cool air to exchange the heat from the radiator. When you stop the car you loose that ability to exchange heat (the fan cant work wonders, even the 1M/M3 fan cant save you once static).

That said, hot oil and coolant is still cooler than the engine and will still do its job, just not as effectively. Oil that gets too hot loses its viscosity so cant lubricate properly.

Edit: Its also not just your engine to be concerned about. The turbos also are oil/water cooled so more psi means more heat that your stock system wasnt designed to dissapate.

[pavo335]

Originally Posted by alik01

Oil and I suppose water by association. High for me is 130C-145C. I just don't feel too comfortable continuing to push when it gets past 135C.

Shit that's pretty hot! Get a jb4 and turn on max cool, the highest I've seen is 130 and after 5 minutes back under 110.

[gtappers]

Welcome back Pete..

Hope you can update me on my email about the Cobb. :-)

[TimMc]

Originally Posted by alik01

Oil and I suppose water by association. High for me is 130C-145C. I just don't feel too comfortable continuing to push when it gets past 135C.

Ditto, I'm still seeing those temps, even with my upgraded cooler.

Originally Posted by pavo335

Shit that's pretty hot! Get a jb4 and turn on max cool, the highest I've seen is 130 and after 5 minutes back under 110.

Max cool won't help you when you're already forcing max air through the radiator at high speed on track. It will help when you slow down or stop & the fan takes over. I always do a cool down lap in top gear/low throttle, trying to keep the speed up a bit to cool the engine oil/water and also trying not to touch the brakes to let them shed some heat before pitting. I can usually shed ~15 degrees oil temp on the cool down lap. My water doesn't get too hot on track but my oil is seeing high 130s.

[pavo335]

Originally Posted by TimMc

Ditto, I'm still seeing those temps, even with my upgraded cooler.

Max cool won't help you when you're already forcing max air through the radiator at high speed on track. It will help when you slow down or stop & the fan takes over. I always do a cool down lap in top gear/low throttle, trying to keep the speed up a bit to cool the engine oil/water and also trying not to touch the brakes to let them shed some heat before pitting. I can usually shed ~15 degrees oil temp on the cool down lap. My water doesn't get too hot on track but my oil is seeing high 130s.

i think max cool will help a little on the track my running the water pump at full throttle. i.e before it gets too hot the pump is actively pumping, as opposed to when the water gets hot to start the pump... although i suspect the benefit is minimal the biggest is the cool down period that i have noticed.

[pavo335]

Originally Posted by Ian///M

Highest mine has gone track and road is oil=125 & water=102.

when you coming down to wakefield ian? the next track day is the 24th.

[pavo335]

Originally Posted by Ian///M

Overseas for last 2 weeks in Oct. Have BMW Intensive course this Saturday though.

as in tomorrow in the pissing down rain? that sucks

[pavo335]

Originally Posted by Ian///M

No rain tomorrow... also not in my car, so no worries

my forecast says pissing all day. not worried about my car their car, more annoyed that you cant push the thing to the edge.

[05C4R]

the intensive course is so tame it would be more exciting in the wet

[saurabh_turingMS]

I'm there tomorrow too, but damn it stopped raining. Am looking forward to the skid pan!!!

Pete- welcome back. I'm hoping to pop down next week to get the bits & bobs on.

[alik01]

Originally Posted by TimMc

Ditto, I'm still seeing those temps, even with my upgraded cooler.

Max cool won't help you when you're already forcing max air through the radiator at high speed on track. It will help when you slow down or stop & the fan takes over. I always do a cool down lap in top gear/low throttle, trying to keep the speed up a bit to cool the engine oil/water and also trying not to touch the brakes to let them shed some heat before pitting. I can usually shed ~15 degrees oil temp on the cool down lap. My water doesn't get too hot on track but my oil is seeing high 130s.

Sorry - late reply. Haven't been on here for a bit.

Agreed! Was a 37C day yesterday and the temps were climbing to just under 145C after 3 hot laps. Pretty crap really. I don't think max cool or anything else is going to resolve that.

Peter is interested in developing a 1M specific kit which will consist of a larger/denser PWR front radiator and 2 x denser/large side Setrab oil coolers.

We even discussed incorporate a Accusump kit into the oil lines to help with start up protection and oil starvation on track.

We're waiting on a test car or for Peter to hurry up and buy a freaking 1M!

[pavo335]

Originally Posted by alik01

Sorry - late reply. Haven't been on here for a bit.

Agreed! Was a 37C day yesterday and the temps were climbing to just under 145C after 3 hot laps. Pretty crap really. I don't think max cool or anything else is going to resolve that.

Peter is interested in developing a 1M specific kit which will consist of a larger/denser PWR front radiator and 2 x denser/large side Setrab oil coolers.

We even discussed incorporate a Accusump kit into the oil lines to help with start up protection and oil starvation on track.

We're waiting on a test car or for Peter to hurry up and buy a freaking 1M!

fark thats a hot ambient. I seriously doubt there is anything you can do when the temps get to that level. well apart from sitting in the pool with a beer

even if you do get the engine temps lower, what about brakes, tyres etc??

[davo135i]

Originally Posted by pavo335

fark thats a hot ambient. I seriously doubt there is anything you can do when the temps get to that level. well apart from sitting in the pool with a beer

even if you do get the engine temps lower, what about brakes, tyres etc??

Agreed. Everthing turns to sh*t.

[alik01]

Originally Posted by pavo335

fark thats a hot ambient. I seriously doubt there is anything you can do when the temps get to that level. well apart from sitting in the pool with a beer

even if you do get the engine temps lower, what about brakes, tyres etc??

Definitely not much you can do. This ambient is abnormal even for us. Usual is 30C - 35C and sometimes a bit lower. Most of the track days are in the dry season where the temps are below 25C till about 12.00pm - which is perfect but the engine still runs pretty hot after a while.

Brakes aren't too bad. We only 2 hard braking corners. The new Ferodo DS2500 pads and Castrol SRF Fluid seem to be holding up quite well - they are quite noisy when hot though.

I've ripped through the front tyres this weekend. So need another set of A050s for the front.

[pavo335]

have you tried the r888's the boys tell me they are pretty good for the track.

[alik01]

Originally Posted by pavo335

have you tried the r888's the boys tell me they are pretty good for the track.

The A050 are supposedly the 'best' semi-slicks out there. The wear is quite severe though. We've got R888 on the GT3 and a few other guys up here run them too - all good comments.

A050s are supposed to heat cycle a bit better over time - if they last long enough!

The next track car should be a bit gentler on the tyres so we'll see.