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Ralph B
19-09-2015, 09:33
Once I remember there was an engine overheating problem with the Pagani Huayra. Haven't driven it since ages and so I'm not shure, if it is solved. However there is still a bug for some of the RoadB cars. The RUF RGT8 and the McLaren F1 still overheat after about 3-4 laps at an average track. Watertemperature goes over 100 and when accelerating you can clearly see steam puffs in your mirror and replay.
I think, some time ago I've seen annother thread about a similar problem with the karts, but can't find it anymore.

Annother car that is a bit critical is the Ford Sierra Cosworth with the default radiator setting. But changing it to something between 75-80% cures the problem. Maybe a change in basic setup would be helpful, but only a minor, almost neglectable problem in this case. For the above mentioned RoadB cars there is no ingame setting for the radiator - so no way to have any influence by us users. This needs to be fixed by the developers itself

I'm not shure, if there are more candidates, but maybe there are. So feel free to list them here, so that the developers can hopefully fix it in one of the next patches.

Mahjik
19-09-2015, 15:08
Once I remember there was an engine overheating problem with the Pagani Huayra. Haven't driven it since ages and so I'm not shure, if it is solved. However there is still a bug for some of the RoadB cars. The RUF RGT8 and the McLaren F1 still overheat after about 3-4 laps at an average track. Watertemperature goes over 100 and when accelerating you can clearly see steam puffs in your mirror and replay.


What are the highest coolant temps that you are seeing (i.e. ignore the puffs of smoke out the back)?

IIRC from the WMD days, the puffs aren't necessarily triggered at the right point for overheating so they aren't a good judge of when the car is too hot. It was mentioned in WMD that those (the puffs) were going to be disabled, but I guess that never happened.

Ralph B
19-09-2015, 19:56
Did some longruns at several tracks with different characteristics. With the Ruf RGT8 average temperature went up to 105, max was at 107 (reading the cars guage). With the McLaren F1 I reached a top temperatur of about 115 (the analog instrument is more difficult to read) and the avarage is like in the Ruf about 2-3 lower. I drove pretty constant laps, revving to the limit but not overrevving, no driving aids and manual shifting with manual clutch.

You adviced me to ignore the puffs, however they are triggered in both cars when you overcome exactly the 100 mark.

Did a test in the Huarya, too. Seems to be ok now. Still some kind of hothead like most cars in pCars, but stays barely under 100 degrees when driving at the limit.

Mahjik
20-09-2015, 13:39
At least typically with most real life cars, 115 C is usually the upper limit for coolant temperatures. Most cars have their cooling systems on full at between 110-115 C, with the cooling systems coming on low or medium around 105-107 C.

I can't say what the trigger point is in pCARS for engine damage (I'm assuming it's likely higher than 115 C, probably around 120 C), but I do recall the devs saying that the smoke was not being triggered properly.

Ralph B
20-09-2015, 14:22
That would mean, everything is ok. Can't really say, what water temperatures are normal for high performance sportscars, but for avarage streetcars a temperature between 80C and 90C is usual. Even running at full throttle, more than 90C is mostly an indicator, that something is wrong. Can confirm this frome some real live experience.

However, I never experienced a engine damage with the RUF or McLaren. Obviously it's more a psychical than physical problem! :) It simply makes me nervous to see the needles of the temparatur gauge at the redline and smoke coming out of the back of my car.
I'd still would be happy, if one of the physics specialists of SMS would have an eye on it just to be shure, that it's quite normal and not really a bug.

mr_belowski
20-09-2015, 15:37
Safe coolant temperatures in race cars aren't going to be significantly higher than for road cars. The coolant is (more or less) the same stuff, doing the same thing in the same way. If it boils the same bad things happen. The main difference is that race engines aren't expected to last as long as road engines, so running very hot might screw the head gasket or warp the head, but as long as it doesn't happen during a race it's not a disaster.

Coolant temperatures in any car above 110 are going to cause problems very quickly. Anything over 100 is cause for concern.

Oil temps are often higher in race cars than road cars

Mahjik
20-09-2015, 16:03
Safe coolant temperatures in race cars aren't going to be significantly higher than for road cars.

He's talking about "street cars" on a "race track", not the racing car temps. Stock street cars will have very high track temperatures. Why? Because they aren't built for that type of running. Normal street temps with the occasional spirited drive will be around 90 C, and maybe a little higher in the warmer areas. However, seeing a street car hit 110 C on the track is not uncommon. On one of my previous street cars, the full fans didn't come on until 105 C.

Ralph B
27-09-2015, 08:32
Just discovered another oddity. The engine overheating discribed in my opening thread happened when practicing. Doing it under same conditions in time trial, water temps stay arround 60-65C with both cars (Ruf RGT8 and McLaren F1)! Now it may be to low, but at least an indicator, that cooling works. It's pretty strange, as the water temperature should be almost the same under equal conditions. They may vary a few degree because of unequal track temperatures in different modes, but almost 90% difference is a bit too much, isn't it? Haven't tried in race so far -maybe here it is the right compromise!? :acne:

And according to Mahjik's last post: I chased some street cars (absolutely stock - no engine tuning or improved cooling, just changes in springs and dampers) around racetracks at public trackdays and didn't notice a significant increase of water temperatures in comparison to normal operation. Even driving at the limit it never went over the redline. The only thing that went higher than in daily use was the oil-temperature, still within the limits though. When it ever came to higher water temps, it was under muggy weather conditions in stop and go traffic when there's almost no airflow until the fan started to run. However, I will not doubt, that some street cars may easily overcome the 100 under extreme conditions. But earlier or later it will lead to engine problems and damage, if you overdo it and when the engine is running to hot for a longer time.
However, here we don't speak about stock street cars - we are discussing about extemely high developed sport cars! I think,they should be able to deal with high demands a lot better than various everyday cars.

Ralph B
27-09-2015, 10:37
After my above experience became curious and started a race against the AI with the RUF. Well, again my engine was running very hot - just like in practice mode. After about 3 1/2 laps at Dubai-GP it was overcoming the 100C mark and my car was showing the characteristic smoke puffs after accellerating, while the AI-opponents obviously didn't have that problem during the whole race.