![]() He has more than a few articles on this site also btw. David Vizard's articles have helped me quite a bit in this area. Diesels are just equipped with turbos, direct injection and heavier parts. Its not diesel, but its an internal combustion engine just like a diesel. Here is a couple kool articles to anyone interested, you should look at. I have read quite a few articles, but, still working on grasping the in-depth-details about airflow etc. I thought about this over the weekend on & off.top cut on the valves (chamber side) or a rounded chamber face edge (read that in a hi-perf gas engine book) so its not a 90 angle after the valve margin to further help the airflow around the valves. ~Don't forget, anyone with input on Ford, Dodge or GM heads PLEASE post it!!!~ Go ahead and throw your theories in (in great detail or not so much) lets have some fun thinking here to improve power production!! :rock The first road-block we have to pass are the valves.īeing new in the turbocharged world, are the turbos from the factory produce a pulsating flow is the air stream a constant throughout the rpms? Forced induction does amplify turbulence if there is any amount present in either intake or exhaust systems. Same will be occurring on the exhuast side of things, but there is a turbo "kind-of" in the way also. The air flow itself will calm down (in my theory) because of the smooth runner walls, floors and roofs from the polishing. The air-to-surface friction will be reduced, but only minimally. When polishing the intake and porting the minor defects out. I figured this thread couldn't go without exchanging air flow discussion & theories either!! Here is what I think how it is in the diesel world. Which heads are the pain-in-the-rear to even try to improve? Which brings up more questions.Īll "classes" involved here -> Light - medium - heavy duty I came across one thread the other day (can't remember the title - I was skimming through) where one mentioned that a certain head you couldn't reach most of the intake port for doing this. How many have ported diesel heads in here with postive results? Little or big, improvements are always needed/desired. But havent chatted about it with others yet. Which, in my eyes makes me want to polish the intake runners (like the exhausts) and take down (and shape) any potential "turbulence producers" if you will. So there is no worry about puddling & wet flow what-so-ever in the diesel world (YES!!). One thing diesels do not have traveling through the intake tract with the air is fuel like carbureted gasoline/alky engines do. Please chime in wether you have a large amount or small amount of experience, everything helps!:thumbsup Being that I am a rook in the world of porting/head modification, I would like some input on working diesel heads if that is no trouble.
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