I wouldn't try to modify the head as there are other methods to mount an A/C belt tensioner assembly.
I know some of the B20 cylinder heads didn't have the mounting hole cast into the head for an A/C tensioner and that may apply to the very early B20E heads.
For those heads with the mounting hole for a tensioner, Volvo used a bracket that was mounted using 2 of the head bolts and a water pump bolt.
So you may need 1 of those setups or there is at least 1 guy selling his own design that uses the thermostat bolts and a water pump bolt to hold the tensioner bracket to the head.
--
Eric Hi Performance Automotive Service (formerly OVO or Old Volvos Only) Torrance, CA 90502 hiperformanceautoservice.com or oldvolvosonly.com
|