Porting and Polishing 2 Strokes. How to chamfer a port window on a 2 stroke. Using a right angle tool for porting makes chamfering the port opening on a 2 stroke fairly easy. Tips from CC Specialty Tools online @(ccspecialtytool.com)
Great question! But no you will not require any other equipment or any other steps, as long as you follow all 3 steps that are listed on this series. It will just go a bit slower than in the video where we have aluminum. The Diamond Tips you see used will work on any hardened metal or material. The only thing I recommend on cast iron is be sure to go through the step of removing the edge burr and the buff polish, since it can be more prone to leaving the edge burr mentioned. Thanks for watching!
Make sure dudes know that you go easy on this part, dont go overboard and make sure not to mess up the Nikasil plating if they're not doin one with a cast iron cylinder liner
1)When taking the bur off from the first step of chamfering, with a cast cylinder rather than using a cross buff could you use just a bit of scotch brite and do it by hand ? (As it's cheaper to buy) 2)I have a cast 50cc barrel (40mm piston) which I will be removing all the carbon build up from and increasing the exhaust height by 1mm maximum, as the ports aren't big does it still require chamfering? 3)I also plan to port a cast 70cc barrel (45-47mm piston) this barrel is off eBay and has crap ports with jagged edges, I plan to go in all the ports and clean them up and again make the exhaust port shine, will this require chamfered ports? 4)Both of the cylinders will require a hone so I'm guessing I will leave that till last, if they do require chamfering do you just do step one and hone as the honing would get rid of the bur? If they don't require chamfering do you simply hone ?
1. Sure you could, just might take a bit longer and can be tricky to get symmetric and even results. 2. Yes, it will require chamfering, but likely only to that port which you have modified. Here is a quick list of situations that I feel require a bevel or chamfer to the combustion side port window: a. Anytime you bore the cylinder or increase bore dimensions. b. Anytime you change any dimensions of the combustion side port window. c. Anytime you have concern about ring wear or damage. d. Anytime you question the quality of the porting job that may have been performed by the previous owner of a cylinder, or for that matter, the quality of the original manufacturer of a cylinder. Better to be safe and sure, rather than destroying your rings and having to rebuild. 3. Please see answer in 2 4. If you are honing the cylinder, you should chamfer the ports after the honing process. 5. Thanks for watching and sorry for the delay, RU-vid seems to only be giving us notifications about our other channel
