a note to be careful in porting

crassius

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Jul 23, 2012
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#1
2nd customer this month bought new cylinder due to fouled up porting job - if you do it, do it carefully
 



Frankenstein

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Jun 24, 2016
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#3
Practice on some scrap aluminum, those carbide bits like to hop around sometimes, and they cut really well, so before you know it you can cut too much and ruin the cylinder. A friend of mine got a little excessive in clearing down the transfer ports, the wall was too thin and failed, of course the rings went with it and the rest of the motor with that situation.

As in that.
 

Joined
Apr 6, 2017
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#4
Practice on some scrap aluminum, those carbide bits like to hop around sometimes, and they cut really well, so before you know it you can cut too much and ruin the cylinder. A friend of mine got a little excessive in clearing down the transfer ports, the wall was too thin and failed, of course the rings went with it and the rest of the motor with that situation.

As in that.
Sometimes hand tools give you time to think about what ur doing whereas power tools just grind away (something 30 years of carpentry learned me) measure twice think 5 times cut 1 time
 



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