Would it be a bad idea to try to mildly smooth out the reed cage area and passages with sand paper? Would this help anything? How about on what looks like an extremely rough casting? What could you hurt by porting yourself? and last any tips?


Thanks in advance

 

General smoothing, in contrast to "amateur night" porting, does no harm, according to Mistress of the Flow Bench, Pamela Falcioni.

Porting, removal of significant volume of material and reshaping flow passage profiles, without professional tools and test equipment, not to mention experience, constitutes a potential recipe for disaster. Maybe you'll get lucky, hitting the optimum combinations for paramount performance, merely by seat-of-the-pants "feel." Maybe you'll win the lottery.

Anyway, conservative smoothing may give you some gain at high flow rates. Better to go easy, unless you really know what you're doing.

Tree Farmer

 

Thanks for the reply! Now I have an idea of do and dont do.

 

Good advise Tree Farmer.
If dont know what your doing, dont cut or grind anything.
I myself do porting work, without any flow bench equiptment. But I have been building engines for 20 years. And theres only so much I will do to flow a head. Also 2 and 4 strokes are completly different.
However if its a 2 sroke, cleaning up the transfer ports is a good idea, if you have a steady hand

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