Soviet fighters and 4.12

[gaunt1]

Please write in english. Im sure not everybody understands russian here (like me). Google translate helps, but it is still quite bad.

About the VK-107, that report with 115 hours in the engine is a big lie. Average engine life was around 20-25 hours for the WW2 version (but only if the pilot didnt use WEP). Of course it was unacceptable, so after the war, some improvements were made, but it had little effect, engines rarely reached 40 hours. Post WW2 reports from Poland, Yugoslavia and Hungary indicate that these engines needed excessive amounts of maintenance, and still they were terribly unreliable, some of them developed engine seizure after only 10-15 hours without using WEP for even a minute! And these were the post-war updated engines.