The most important area in a flowed head is the 1/2 inch before the valve seat.I dont think 10% is realistic ,but under the theory of every little bit helps it could be a better running engine with the casting flash smoothed out.Now all kinds of guys are gonna warn you about smooth intake ports,fuel puddling etc etc.Im just saying it cant hurt.If you really want to go at it you need Cratex rubberized grinding wheels and work the seat area to a nice radius in and out of the valve seat.Kinda like a 30 thousand dollar Serdi does with cutters.I have a whole file drawer on air flow and there is quite a bit to it.You are trying to improve volumetric efficency.Other improvements of power are thermal efficiency,and mechanical,but biggest gains are from volumetric efficency improvments.So yeah it cant hurt power[it can really but thats a whole new subject called ports too large]
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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