Measured the exhaust port this morning, raised the center large port up about 0.5 mm cleaning up the casting marks. Should I try raising up the two auxiliary exhaust ports either side of the larger main exhaust port to match? If so what can a person get in there to clean them up? Should I try and clean up the exhaust path more? I can see ripples still, better than what I started with, just not sure how aggressive I should get.
Moving the exhaust port up 0.5 mm, and still 1.0 mm shim under the barrel to set squish that puts me at the following
26.41 blow down
Exhaust port cleaned up nicely, need to figure out what to do with the two small ones. Raised the middle port about 0.5mm cleaning up the casting. Didn't realize that I cleaned so much off until I measured just now.
Not sure how aggressive to get here either.