AG burr finish

I try to avoid using air grinder if possible.....the noise and mess does me in. Plus, it's probably expensive to run.

I used to use a Makita electric grinder....then it broke and I bought a newer, bigger Makita that has the dial for variable speed. That works very well, but the grinder has two flaws - it's big AF and they don't have a lock on the switch.

When I get around to it, I plan to look for a high quality, smaller grinder with variable speed and a lock.

As for burr finishes....I have no real data on how they perform on a short term race engine. But especially on the exhaust side, I like a smooth finish to lessen carbon buildup. If I were a little more inclined, I'd get the ex ports Teflon coated, even.