Been without Porting tools for nearly half a Year now after my Dremel died, want to start Porting again, next one on the list would be a stock Sachs Nicasil coated Cylinder, i have experienche Porting Chrome Coated Cylinders and Cast iron, what do i need to Port Nicasil and what do i need to look out for/How do i need to do it?
Edit: accidentally put this in General, wanted to put it in the Performance Wiki. * Moved to this forum by grahammotzing(edited)
Find on flea bay a old 90s one speed dremel, they las 19x longer then junk variable speed ones
I prefer a black and Decker rotary over Dremel. I usually do all of the finishing work with files, the carbide bits will chip the nikasil.
Amazon sells packs of 240 grit deburring bits for $10ish; shanks fit perfectly in a dremel (esp if you have the jacobs chuck adapter). These A) have nice reach, and B) are pretty forgiving if you slip a bit.
I mean, I wouldn't use it for removing material, but for cleaning edges, drawing lines, mm widening, etc. they rock.
For the last 10 years I've been keeping my eye out for an old dentist drill or a pantograph engraver The Pantagraph would make quick work of anything perfectly with no errors at all of course you have to do more than one fact you'd have to have a living doing it to afford either of those tools though and you'll never go wrong with tungsten carbide bits
they got those 10$ sets of carbide burrs on fleabay. they RUUUUUULE.
i feel like the nikasil gets out of my way pretty easy. chamfering kinda helps it "get nice" too.
the alloy cylinders go away real fast with the carbide burrs on "10." i like to start with my dremel on low, then slowly gain confidence with it, turn it up slowly, until you climb-cut out on to a mating surface, then turn it back down....
since i started porting stuff, i pretty much just go big on exhaust ports. not too big, more width, i'm quite pleased with the results. no need to push it too far in my case.
great tips keep'em coming! does the intake get widened same as the exhaust?
I bought the flexible shaft grinder from Harbor Freight for $50. I love it. Way better for porting than a dremel. Look for my link on how I made a transfer port tool using this. It is based on Alex's tool from Two Stroke Stuffing.
Another Nifty thing that you can use as a tool is a magicians silver ball it looks like a big pinball but it's really plastic with a magnet in it I use it inside the cylinder so I can see the roof of what I'm working on
the pantograph engraver is used to engrave everything from cups and trophies the inside of jewelry so if you set it up to do an inside Engraving all you need is a template of the port map and it will recreate it identically on the inside or you could even make it enlarge it or reduce it
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