High revving turbo engine, runs fine but 0 MTBF?

[GTMoraes]

The subject says it all. I've made a engine based on the Honda K20Z4 and started to mess around with it, placing turbo and stuff.

I managed to squeeze 560HP out of it (using regular unleaded fuel hehe), but the MTBF is shown as 0! It's a 8200RPM engine, but I can rev it as high as 10000RPM and it doesn't blow up (but sadly the power curve doesn't change)
In the test mode it doesn't complain about anything, and in the advanced test mode everything seems to be alright. What can it be?

Here it is, for testing if anyone wishes to:

K20Z4 (Turbo Race)Rev2.lua

(76.58 KiB) Downloaded 227 times

pics:
http://imageshack.com/a/img811/5851/51iq.png
http://imageshack.com/a/img163/2998/irk1.png

[Frankschtaldt]

I can confirm this happens.
I made a turbo 1.6L I4 by modifying a natmo engine I already had designed for econoboxes and ended up with a 0 MTBF.

[GTMoraes]

I can confirm this happens.
I made a turbo 1.6L I4 by modifying a natmo engine I already had designed for econoboxes and ended up with a 0 MTBF.

Now, if you go into the engine selection in the model sandbox and run the bench test, it'll provide a valid MTBF!
Not only that, every engine you own might produce a different MTBF than the previously calculated on the bench alone, to more or to less (my 0 MTBF engine ended up having 76k km MTBF in the model designer).

http://imageshack.com/a/img707/6100/72um.png

[Der Bayer]

Turbo engines in the engine designer sandbox still get a MTBF penalty if they exceed 100 or 125 kW/liter. If you put them into cars with enough cooling capacity, they won't suffer from that penalty. So if you build the engine from within the model designer, you get the right MTBF while designing the engine. Having not enough cooling capacity will reduce your MTBF.

[Reaper392]

would it be possible to have a 'simulated cooling' slider in one of the tabs of the engine design sandbox, perhaps even in the testing panel itself. i believe i asked one of you about this in the chat a while ago but i forget what the answer was

[GTMoraes]

Turbo engines in the engine designer sandbox still get a MTBF penalty if they exceed 100 or 125 kW/liter. If you put them into cars with enough cooling capacity, they won't suffer from that penalty. So if you build the engine from within the model designer, you get the right MTBF while designing the engine. Having not enough cooling capacity will reduce your MTBF.

That kinda makes everything harder. A slider, like the guy above proposed, is a better deal. Specially when one designs the engine first then proceeds to design the car (like me)!
Also, on the Scenarios mode, I get a hard time making durable turbo engines, probably due to that. A slider and/or a visible limit, like we have with emissions or fuel type, would be welcome.