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Post by triplepoweredgpz on Mar 27, 2016 8:51:43 GMT -5
I've never ported any cast iron, minimum effort, didn't clog my carbide burrs and the finish almost looks like I know what I'm doing...I'm pretty happy with it.I always have the option of going further or taking some of the lift out until I'm happy but I think it's a good start
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Post by Jim on Mar 27, 2016 10:06:42 GMT -5
I did some port work to my Yamaha DT100 cylinder a couple years ago. The cylinder is one solid piece of cast iron, fins and all. I expected it to be more difficult than my H2 cylinders, but it was the opposite. The carbide burrs cut through it like butter, and as you said, the finish was great and I didn't have to use wax on the burr to keep the flutes clear like I do with aluminum.
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Post by Walms on Mar 27, 2016 10:16:37 GMT -5
I would have thought that Steve would have only ported cast iron being a car guy... Lol I'm showing my age!
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Post by triplepoweredgpz on Mar 27, 2016 10:48:09 GMT -5
Vortec Chevy heads don't respond well to porting, lsx stuff is aluminum...I'm a Chevy guy
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Post by Walms on Mar 27, 2016 10:53:47 GMT -5
Yeah, Ford detuned the small blocks with small exhaust ports, even the GT40's look too small for my likening...
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Post by triplepoweredgpz on Mar 27, 2016 11:16:16 GMT -5
I did some port work to my Yamaha DT100 cylinder a couple years ago. The cylinder is one solid piece of cast iron, fins and all. I expected it to be more difficult than my H2 cylinders, but it was the opposite. The carbide burrs cut through it like butter, and as you said, the finish was great and I didn't have to use wax on the burr to keep the flutes clear like I do with aluminum. I use atf, what kind of wax do you use? Just candle wax?
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Post by Jim on Mar 27, 2016 12:02:56 GMT -5
I usually use a big stick of waxy stuff sold for bandsaw blades and other machine tools, but I've also used an old broken candle, and it works too.
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Post by triplepoweredgpz on Mar 27, 2016 12:34:04 GMT -5
I have a surplus of bacon grease...maybe I should try that, it may make my porting more enjoyable;)
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Post by Jim on Mar 27, 2016 12:44:38 GMT -5
Coconut oil makes a great cutting oil for lathe work, milling, and drilling, and doesn't stink the shop up with toxic fumes. Instead it smells like someone's cooking.
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