I read through a few threads on adding an oil filter to a 235 engine, as well as the website [url=http://devestechnet.com/Home/FullFlowOil][/url]. My engine has the three pads on the left side of the engine just behind the generator (the option 5 layout in the above link), but they're not drilled and tapped. I have yet to find any information on whether these can be drilled out, or how far they can be drilled if it's possible and advisable. What can you tell me?
Thanks,
Chuck
