While drilling out an exhaust stud hole for a heli-coil/keensert repair (see earlier thread http://www.vansairforce.com/community/showthread.php?t=95294), I noticed that all four of my O-320's exhaust ports have a rough, uneven surface. Some are worse than others, of course, but all could use some attention. I'm afraid that their current condition is evidence of past exhaust leaks and really don't want to slam another gasket up with a brand new Vetterman exhaust just to have it leak as well.
I've done some reading about tools to grind or lap the exhaust port surface, but wondered if anyone had experience or advice on the process. Also is it possible to rent/borrow tools to do this? Spruce sells one such beast, but it's terribly expensive and requires purchase of a special mounting bracket as well for a total approaching $600![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
http://www.aircraftspruce.com/catalog/topages/resurfactool.php
Any and all advice is appreciated - thanks!
I've done some reading about tools to grind or lap the exhaust port surface, but wondered if anyone had experience or advice on the process. Also is it possible to rent/borrow tools to do this? Spruce sells one such beast, but it's terribly expensive and requires purchase of a special mounting bracket as well for a total approaching $600
http://www.aircraftspruce.com/catalog/topages/resurfactool.php
Any and all advice is appreciated - thanks!