Research FLEX HONE Cylinder Abrasive Diameter Review

I used this to crack the icing on a 68mm bore of a cast steel motorcycle engine cylinder. It worked very well - 10-30 SAE oil, 1500 rpm for a few minutes left very smooth honing lines. BUT 1: You REALLY need to take the time to get the grain out of the barrel after sharpening. and 2) I think you may need to run the devices longer than I did as the results were still evident after running in Bke.

Bought to sharpen Buick 3.8 cylinders after trying out their old 3 arm stone grinders. I have no idea why I ever thought this contraption would ever work. That's a beast. It takes seconds to use properly and I didn't give any extra thought to getting the crank back and plugging in the pistons. If during your mid-life crisis you're ever planning on having to overhaul your engine, save yourself some time, grab this one and the next, and use them to perfect your SBC or whatever.

I have a 2005 Honda CRV that burned a quart of oil per tank of gas. Yes, you read it right. The car was scolded before I got it but now I have to fix it. I disassembled the engine and found scrapes on the #4 cylinder wall and a damaged piston. All 4 pistons, rings and connecting rod bearings renewed. I took this honing on all cylinder walls with a little extra in #4. All holes came out perfect except #4 which I would give 8 out of 10 from the factory. You could still see some vertical lines…