If i'm not mistaken, and correct me if I'm wrong, JD combines use the same engine as the 7710IJ, 7810, the whole 8000,8010, and 8020 series, and the 9100,9200 (some),and the 9120. In addition to this is many of the past JD combines in the 9000 and 9010 series. They all use the same 8.1 l engine. Now I have never heard of engines blowing in these tractors so I find it hard to believe it would happen in the combines.