Hey! I`m about to bay 150 opti 06, 298 hours, the compression is 95 to 105 psi(cold) on all six cil,but DDT test show that port side had overheating for 334 sec and STBS had 642 sec overheating in the past.And i can see that bolts on both heads was touched.My Q.is what else shoud i look and what it was that record this type of data as owerheating.It was owerheated block or it was just major overheating(etc as on most opis low pres impeler or same thing).
Over all engine run g8,but those bolts........
Over all engine run g8,but those bolts........