[QUOTE=1QwkSport2.5r;12326349. I know a guy getting over 18,000+ on a 9x8 APC from an Italian Super Tigre .45 that was hand modified.
Oh, and on the comment about the OS fan engine - their horrible liners peel if you don't handle them with the utmost of care. Not a good benchmark for "performance" or "quality".[/QUOTE]
I got over 19,000 on the ground with a K&B 40S stock engine, Revup 9x8&1/2. Many ducted fan guys get excellent performance from OS ABN sleeves, I never had a OS 65VRM sleeve peel and I ran 60%. There is one guy selling OS 90 VRDF's used 3 for $325.00 on RCGroups .
PS The K&B 40S wasn't stock, it had the head modified to take a 1S plug, instead of the 1L plug. LOL